Levi was born in 1919 in Turin, Italy, at Corso Re Umberto 75, into a liberal Jewish family. His father, Cesare, worked for the manufacturing firm Ganz and spent much of his time working abroad in Hungary, where Ganz was based. Cesare was an avid reader and autodidact. Levi's mother, Ester, known to everyone as Rina, was well educated, having attended the Istituto Maria Letizia. She too was an avid reader, played the piano, and spoke fluent French. The marriage between Rina and Cesare had been arranged by Rina's father. On their wedding day, Rina's father, Cesare Luzzati, gave Rina the apartment at Corso Re Umberto, where Primo Levi lived for almost his entire life.
In 1921 Anna Maria, Levi's sister, was born; he remained close to her all his life. In 1925 he entered the Felice Rignon primary school in Turin. A thin and delicate child, he was shy and thought he was ugly; he excelled academically. His school record includes long periods of absence during which he was tutored at home, at first by Emilia Glauda and then by Marisa Zini, daughter of philosopher Zino Zini. The children spent summers with their mother in the Waldensian valleys southwest of Turin, where Rina rented a farmhouse. His father remained in the city, partly because of his dislike of the rural life, but also because of his infidelities.
In September 1930 Levi entered the Massimo d'Azeglio Royal Gymnasium a year ahead of normal entrance requirements. In class he was the youngest, the shortest and the cleverest, as well as being the only Jew. For these reasons, he was bullied. In August 1932, following two years at the Talmud Torah school in Turin, he sang in the local synagogue for his Bar Mitzvah. In 1933, as was expected of all young Italian schoolboys, he joined the Avanguardisti movement for young Fascists. He avoided rifle drill by joining the ski division, and spent every Saturday during the season on the slopes above Turin. As a young boy Levi was plagued by illness, particularly chest infections, but he was keen to participate in physical activity. In his teens, Levi and a few friends would sneak into a disused sports stadium and conduct athletic competitions.
In July 1934 at the age of 14, he sat the exams for the Liceo Classico D'Azeglio, a Lyceum (sixth form or senior high school) specializing in the classics, and was admitted that year. The school was noted for its well-known anti-Fascist teachers, among them the philosopher Norberto Bobbio, and Cesare Pavese, who later became one of Italy's best-known novelists. Levi continued to be bullied during his time at the Lyceum, although six other Jews were in his class. Upon reading Concerning the Nature of Things by Sir William Bragg, Levi decided that he wanted to be a chemist.
In 1937, he was summoned before the War Ministry and accused of ignoring a draft notice from the Italian Royal Navy—one day before he was to write a final examination on Italy's participation in the Spanish Civil War, based on a quote from Thucydides: "We have the singular merit of being brave to the utmost degree." Distracted and terrified by the draft accusation, he failed the exam—the first poor grade of his life—and was devastated. His father was able to keep him out of the Navy by enrolling him in the Fascist militia (Milizia Volontaria per la Sicurezza Nazionale). He remained a member through his first year of university, until passage of the Italian Racial Laws of 1938 forced his expulsion. Levi later recounted this series of events in the short story "Fra Diavolo on the Po".
He retook and passed his final examinations, and in October enrolled at the University of Turin to study chemistry. As one of 80 candidates, he spent three months taking lectures, and in February, after passing his colloquio (oral examination), he was selected as one of 20 to move on to the full-time chemistry curriculum.
In the liberal period as well as in the first decade of the Fascist regime, Jews held many public positions, and were prominent in literature, science and politics. In 1929 Mussolini signed an agreement with the Catholic Church, the Lateran Treaty, which established Catholicism as the State religion, allowed the Church to influence many sectors of education and public life, and relegated other religions to the status of "tolerated cults". In 1936 Italy's conquest of Ethiopia and the expansion of what the regime regarded as the Italian "colonial empire" brought the question of "race" to the forefront. In the context set by these events, and the 1940 alliance with Hitler's Germany, the situation of the Jews of Italy changed radically.
In July 1938 a group of prominent Italian scientists and intellectuals published the "Manifesto of Race," a mixture of racial and ideological antisemitic theories from ancient and modern sources. This treatise formed the basis for the Italian Racial Laws of October 1938. After its enactment Italian Jews lost their basic civil rights, positions in public offices, and their assets. Their books were prohibited: Jewish writers could no longer publish in magazines owned by Aryans. Jewish students who had begun their course of study were permitted to continue, but new Jewish students were barred from entering university. Levi had matriculated a year earlier than scheduled enabling him to take a degree.
In 1939 Levi began his love affair with hiking in the mountains. A friend, Sandro Delmastro, taught him how to hike, and they spent many weekends in the mountains above Turin. Physical exertion, the risk, and the battle with the elements all supplied him with an outlet for his frustrations, as Levi later wrote in the chapter "Iron" of The Periodic Table (1975). In June 1940 Italy declared war as an ally of Germany against Britain and France, and the first Allied air raids on Turin began two days later. Levi's studies continued during the bombardments. The family suffered additional strain as his father became bedridden with bowel cancer.
Because of the new racial laws and the increasing intensity of prevalent fascism, Levi had difficulty finding a supervisor for his graduation thesis, which was on the subject of Walden inversion, a study of the asymmetry of the carbon atom. Eventually taken on by Dr. Nicolò Dallaporta, he graduated in mid-1941 with full marks and merit, having submitted additional theses on x-rays and electrostatic energy. His degree certificate bore the remark, "of Jewish race". The racial laws prevented Levi from finding a suitable permanent job after graduation.
In December 1941 Levi received a clandestine job offer at an asbestos mine in San Vittore. The project was to extract nickel from the mine spoil, a challenge he accepted with pleasure. Levi understood that, if successful, he would be aiding the German war effort, which was suffering nickel shortages in the production of armaments. The job required Levi to work under a false name with false papers. In March 1942 while he was working at the mine, his father died. Levi left the mine in June to work in Milan. Recruited through a fellow student at Turin University, working for the Swiss firm of A Wander Ltd on a project to extract an anti-diabetic from vegetable matter, he took the job in a Swiss company to escape the race laws. It soon became clear that the project had no chance of succeeding, but it was in no one's interest to say so.
In July 1943, King Victor Emmanuel III deposed Mussolini and appointed a new government under Marshal Pietro Badoglio, prepared to sign the Armistice of Cassibile with the Allies. When the armistice was made public on 8 September, the Germans occupied northern and central Italy, liberated Mussolini from imprisonment and appointed him as head of the Italian Social Republic, a puppet state in German-occupied northern Italy. Levi returned to Turin to find his mother and sister having taken refuge in their holiday home
La Saccarello in the hills outside the city. The three embarked to Saint-Vincent in the Aosta Valley, where they could be hidden. Being pursued as Jews, many of whom had already been interned by the authorities, they moved up the hillside to Amay in the
Colle di Joux. Amay was en route for fugitive prisoners of war and refugees trying to flee the Germans.
The Italian resistance movement became increasingly active in the German-occupied zone. Levi and some comrades took to the foothills of the Alps, and in October formed a partisan group in the hope of being affiliated to the liberal Giustizia e Libertà. Untrained for such a venture, he and his companions were arrested by the Fascist militia on 13 December 1943. When told he would be shot as an Italian partisan, Levi confessed to being Jewish. He was sent to the internment camp at Fossoli near Modena. He recalled that as long as Fossoli was under the control of the Italian Social Republic, rather than Nazi Germany, he was not harmed.
We were given, on a regular basis, a food ration destined for the soldiers", Levi's testimony stated, "and at the end of January 1944, we were taken to Fossoli on a passenger train. Our conditions in the camp were quite good. There was no talk of executions and the atmosphere was quite calm. We were allowed to keep the money we had brought with us and to receive money from the outside. We worked in the kitchen in turn and performed other services in the camp. We even prepared a dining room, a rather sparse one, I must admit.
Fossoli was then taken over by the Nazis, who started arranging the deportations of the Jews to eastern concentration and death camps. On the second of these transports, on 21 February 1944, Levi and other inmates were transported in twelve cramped cattle trucks to Monowitz, one of the three main camps in the Auschwitz concentration camp complex. Levi (record number 174517) spent eleven months there before the camp was liberated by the Red Army on 18 January 1945. Of the 650 Italian Jews in his transport, Levi was one of twenty who left the camps alive. The average life expectancy of a new entrant at the camp was three to four months.
Levi knew some German from reading German publications on chemistry; he worked to orient quickly to life in the camp without attracting the attention of the privileged inmates. He used bread to pay a more experienced Italian prisoner for German lessons and orientation in Auschwitz. He was given a smuggled soup ration each day by Lorenzo Perrone, an Italian civilian bricklayer working there as a forced labourer. Levi's professional qualifications were useful: in mid-November 1944, he secured a position as an assistant in IG Farben's Buna Werke laboratory that was intended to produce synthetic rubber. By avoiding hard labour in freezing outdoor temperatures he was able to survive; also, by stealing materials from the laboratory and trading them for extra food. Shortly before the camp was liberated by the Red Army, he fell ill with scarlet fever and was placed in the camp's sanatorium (camp hospital). On 18 January 1945, the SS hurriedly evacuated the camp as the Red Army approached, forcing all but the gravely ill on a long death march to a site further from the front, which resulted in the deaths of the vast majority of the remaining prisoners on the march. Levi's illness spared him this fate.
Although liberated on 27 January 1945, Levi did not reach Turin until 19 October 1945. After spending some time in a Soviet camp for former concentration camp inmates, he embarked on an arduous journey home in the company of former Italian prisoners of war who had been part of the Italian Army in Russia. His long railway journey home to Turin took him on a circuitous route from Poland, through Belarus, Ukraine, Romania, Hungary, Austria, and Germany. In later writings, he noted the millions of displaced people on the roads and trains throughout Europe in that period.
Levi was almost unrecognisable on his return to Turin. Malnutrition edema had bloated his face. Sporting a scrawny beard and wearing an old Red Army uniform, he returned to Corso Re Umberto. The next few months gave him an opportunity to recover physically, re-establish contact with surviving friends and family, and start looking for work. Levi suffered from the psychological trauma of his experiences. Having been unable to find work in Turin, he started to look for work in Milan. On his train journeys, he began to tell people he met stories about his time at Auschwitz.
At a Jewish New Year party in 1946, he met Lucia Morpurgo, who offered to teach him to dance. Levi fell in love with Lucia. At about this time, he started writing poetry about his experiences in Auschwitz.
On 21 January 1946 he started work at DUCO, a Du Pont Company paint factory outside Turin. Because of the extremely limited train service, Levi stayed in the factory dormitory during the week. This gave him the opportunity to write undisturbed. He started to write the first draft of If This Is a Man. Every day he scribbled notes on train tickets and scraps of paper as memories came to him. At the end of February, he had ten pages detailing the last ten days between the German evacuation and the arrival of the Red Army. For the next ten months, the book took shape in his dormitory as he typed up his recollections each night.
On 22 December 1946, the manuscript was complete. Lucia, who now reciprocated Levi's love, helped him to edit it, to make the narrative flow more naturally. In January 1947, Levi was taking the finished manuscript around to publishers. It was rejected by Einaudi on the advice of Natalia Ginzburg. The social wounds of the war years were still too fresh, and he had no literary experience to give him a reputation as an author.
Eventually Levi found a publisher, Franco Antonicelli, through a friend of his sister's. Antonicelli was an amateur publisher, but as an active anti-Fascist, he supported the idea of the book.
At the end of June 1947, Levi suddenly left DUCO and teamed up with an old friend Alberto Salmoni to run a chemical consultancy from the top floor of Salmoni's parents' house. Many of Levi's experiences of this time found their way into his later writing. They made most of their money from making and supplying stannous chloride for mirror makers, delivering the unstable chemical by bicycle across the city. The attempts to make lipsticks from reptile excreta and a coloured enamel to coat teeth were turned into short stories. Accidents in their laboratory filled the Salmoni house with unpleasant smells and corrosive gases.
In September 1947, Levi married Lucia and a month later, on 11 October, If This Is a Man was published with a print run of 2,000 copies. In April 1948, with Lucia pregnant with their first child, Levi decided that the life of an independent chemist was too precarious. He agreed to work for Accatti in the family paint business which traded under the name SIVA. In October 1948, his daughter Lisa was born.
During this period, his friend Lorenzo Perrone's physical and psychological health declined. Lorenzo had been a civilian forced worker in Auschwitz, who for six months had given part of his ration and a piece of bread to Levi without asking for anything in return. The gesture saved Levi's life. In his memoir, Levi contrasted Lorenzo with everyone else in the camp, prisoners and guards alike, as someone who managed to preserve his humanity. After the war, Lorenzo could not cope with the memories of what he had seen, and descended into alcoholism. Levi made several trips to rescue his old friend from the streets, but in 1952 Lorenzo died.
In 1950, having demonstrated his chemical talents to Accatti, Levi was promoted to Technical Director at SIVA. As SIVA's principal chemist and trouble shooter, Levi travelled abroad. He made several trips to Germany and carefully engineered his contacts with senior German businessmen and scientists. Wearing short-sleeved shirts, he made sure they saw his prison camp number tattooed on his arm.
He became involved in organisations pledged to remembering and recording the horror of the camps. In 1954 he visited Buchenwald to mark the ninth anniversary of the camp's liberation from the Nazis. Levi dutifully attended many such anniversary events over the years and recounted his own experiences. In July 1957, his son Renzo was born, almost certainly named after his saviour Lorenzo Perrone.
Despite a positive review by Italo Calvino in L'Unità, only 1,500 copies of If This Is a Man were sold. In 1958 Einaudi, a major publisher, published it in a revised form and promoted it.
In 1958 Stuart Woolf, in close collaboration with Levi, translated If This Is a Man into English, and it was published in the UK in 1959 by Orion Press. Also in 1959 Heinz Riedt, also under close supervision by Levi, translated it into German. As one of Levi's primary reasons for writing the book was to get the German people to realise what had been done in their name, and to accept at least partial responsibility, this translation was perhaps the most significant to him.
Levi began writing The Truce early in 1961; it was published in 1963, almost 16 years after his first book. That year it won the first annual Premio Campiello literary award. It is often published in one volume with If This Is a Man, as it covers his long return through eastern Europe from Auschwitz. Levi's reputation was growing. He regularly contributed articles to La Stampa, the Turin newspaper. He worked to gain a reputation as a writer about subjects other than surviving Auschwitz.
In 1963, he suffered his first major bout of depression. At the time he had two young children, a responsible job at a factory where accidents could and did have terrible consequences, he travelled and became a public figure. But the memory of what happened less than twenty years earlier still burned in his mind. Today the link between such trauma and depression is better understood. Doctors prescribed several different drugs over the years, but these had variable efficacy and side effects.
In 1964 Levi collaborated on a radio play based upon If This Is a Man with the state broadcaster RAI, and in 1966 with a theatre production.
He published two volumes of science fiction short stories under the pen name of Damiano Malabaila, which explored ethical and philosophical questions. These imagined the effects on society of inventions which many would consider beneficial, but which, he saw, would have serious implications. Many of the stories from the two books Storie naturali (Natural Histories, 1966) and Vizio di forma (Structural Defect, 1971) were later collected and published in English as The Sixth Day and other Tales.
In 1974 Levi arranged to go into semi-retirement from SIVA in order to have more time to write. He also wanted to escape the burden of responsibility for managing the paint plant.
In 1975 a collection of Levi's poetry was published under the title L'osteria di Brema (The Bremen Beer Hall). It was published in English as Shema: Collected Poems.
He wrote two other highly praised memoirs, Lilit e altri racconti (Moments of Reprieve, 1978) and Il sistema periodico (The Periodic Table, 1975). Moments of Reprieve deals with characters he observed during imprisonment. The Periodic Table is a collection of short pieces, based in episodes from his life but including two short stories that he wrote before his time in Auschwitz. Each story was related in some way to one of the chemical elements. At London's Royal Institution on 19 October 2006, The Periodic Table was voted onto the shortlist for the best science book ever written.
In 1977 at the age of 58, Levi retired as a part-time consultant at the SIVA paint factory to devote himself full-time to writing. Like all his books, La chiave a stella (1978), published in the US in 1986 as The Monkey Wrench and in the UK in 1987 as The Wrench, is difficult to categorize. Some reviews describe it as a collection of stories about work and workers told by a narrator who resembles Levi. Others have called it a novel, created by the linked stories and characters. Set in a Fiat-run company town in Russia called Togliattigrad, it portrays the engineer as a hero on whom others depend. The underlying philosophy is that pride in one's work is necessary for fulfillment. The Piedmontese engineer Faussone travels the world as an expert in erecting cranes and bridges. Left-wing critics said he did not describe the harsh working conditions on the assembly lines at Fiat. It brought Levi a wider audience in Italy. The Wrench won the Strega Prize in 1979. Most of the stories involve the solution of industrial problems by the use of troubleshooting skills; many stories come from the author's personal experience.
In 1984 Levi published his only novel, If Not Now, When?— or his second novel, if The Monkey Wrench is counted. It traces the fortunes of a group of Jewish partisans behind German lines during World War II as they seek to survive and continue their fight against the occupier. With the ultimate goal of reaching Palestine to take part in the development of a Jewish national home, the partisan band reaches Poland and then German territory. There the surviving members are officially received as displaced persons in territory held by the Western allies. Finally, they succeed in reaching Italy, on their way to Palestine. The novel won both the Premio Campiello and the Premio Viareggio.
The book was inspired by events during Levi's train journey home after release from the camp, narrated in The Truce. At one point in the journey, a band of Zionists hitched their wagon to the refugee train. Levi was impressed by their strength, resolve, organisation, and sense of purpose.
Levi became a major literary figure in Italy, and his books were translated into many other languages. The Truce became a standard text in Italian schools. In 1985, he flew to the United States for a 20-day speaking tour. Although he was accompanied by Lucia, the trip was very draining for him.
In the Soviet Union his early works were not accepted by censors as he had portrayed Soviet soldiers as slovenly and disorderly rather than heroic. In Israel, a country formed partly by Jewish survivors who lived through horrors similar to those Levi described, many of his works were not translated and published until after his death.
In March 1985 he wrote the introduction to the re-publication of the autobiography of Rudolf Höss, who was commandant of Auschwitz concentration camp from 1940 to 1943. In it he writes, "It's filled with evil . . . and reading it is agony."
Also in 1985 a volume of his essays, previously published in La Stampa, was published under the title L'altrui mestiere (Other People's Trades). Levi used to write these stories and hoard them, releasing them to La Stampa at the rate of about one a week. The essays ranged from book reviews and ponderings about strange things in nature, to fictional short stories.
In 1986 his book I sommersi e i salvati (The Drowned and the Saved), was published. In it he tried to analyse why people behaved the way they did at Auschwitz, and why some survived whilst others perished. In his typical style, he makes no judgments but presents the evidence and asks the questions. For example, one essay examines what he calls "The Grey Area", those Jews who did the Germans' dirty work for them and kept the rest of the prisoners in line. He questioned, what made a concert violinist behave as a callous taskmaster?
Also in 1986 another collection of short stories, previously published in La Stampa, was assembled and published as Racconti e saggi (some of which were published in the English volume The Mirror Maker).
At the time of his death in April 1987, Levi was working on another selection of essays called The Double Bond, which took the form of letters to "La Signorina". These essays are very personal in nature. Approximately five or six chapters of this manuscript exist. Carole Angier, in her biography of Levi, describes how she tracked some of these essays down. She wrote that others were being kept from public view by Levi's close friends, to whom he gave them, and they may have been destroyed.
In March 2007 Harper's Magazine published an English translation of Levi's story "Knall", about a fictitious weapon that is fatal at close range but harmless more than a meter away. It originally appeared in his 1971 book Vizio di forma, but was published in English for the first time by Harper's.
A Tranquil Star, a collection of seventeen stories translated into English by  was published in April 2007.
In 2015, Penguin published The Complete Works of Primo Levi, ed. Ann Goldstein. This is the first time that Levi's entire oeuvre has been translated into English.
Levi died on 11 April 1987 after a fall from the interior landing of his third-story apartment in Turin to the ground floor below. The coroner ruled his death a suicide. Three of his biographers (Angier, Thomson and Anissimov) agreed. In his later life, Levi indicated that he was suffering from depression; factors likely included responsibility for his elderly mother and mother-in-law, with whom he was living, and lingering traumatic memories of his experiences. The Nobel laureate and Holocaust survivor Elie Wiesel said, at the time, "Primo Levi died at Auschwitz forty years later".
Several of Levi's friends and associates have argued otherwise. The Oxford sociologist Diego Gambetta noted that Levi left no suicide note, nor any other indication that he was considering suicide. Documents and testimony suggested that he had plans for both the short- and longer-term at the time. After visiting the apartment complex, Gambetta suggested that Levi lost his balance and fell accidentally, as he had complained to his physician of dizziness in the days before his death. The Nobel laureate Rita Levi-Montalcini, a close friend of Levi, agreed. "As a chemical engineer," she said, "he might have chosen a better way [of exiting the world] than jumping into a narrow stairwell with the risk of remaining paralyzed."