Hart was born on July 6, 1979, in Philadelphia, Pennsylvania.

After graduating from George Washington High School, Hart briefly attended the Community College of Philadelphia before dropping out and moving to New York City.

Kevin then moved to Brockton, Massachusetts, and found work as a shoe salesman. He began pursuing a career in stand-up comedy after performing at an amateur night at a club in Philadelphia.

Hart came to prominence from his guest appearance in Undeclared.

Kevin made his film debut in the film Paper Soldiers.

Hart then gained further recognition from his other films such as the Scary Movie franchise.

Kevin and Torrei Hart married in 2003.

Soul Plane is a 2004 American comedy film directed by Jessy Terrero. The film stars Tom Arnold, Kevin Hart, Method Man, and Snoop Dogg.

Kevin turned down a role in the 2008 film Tropic Thunder because the character is gay, citing his own "insecurities".

Hart's comedy tours began in 2009 with his act titled I'm a Grown Little Man.

Kevin and Torrei Hart filed for divorce in February 2010, citing irreconcilable differences.

Death at a Funeral is a 2010 American black comedy film directed by Neil LaBute with a screenplay by Dean Craig. It is a remake of the 2007 British film of the same name that Craig wrote. The film features an ensemble cast including Chris Rock, Martin Lawrence, Danny Glover, Regina Hall, Peter Dinklage, James Marsden, Tracy Morgan, Loretta Devine, Zoë Saldaña, Columbus Short, Luke Wilson, Keith David, Ron Glass, and Kevin Hart.

Kevin Hart also appeared in 35 and Ticking.

In addition to acting, Hart has also hosted various ceremonies. Hart first hosted the 2011 BET Awards.

Kevin Hart: Laugh at My Pain is a 2011 stand-up comedy documentary film, starring comedian Kevin Hart. It features Hart performing a stand-up special at the Nokia Theater at L.A. Live in Downtown Los Angeles, among other material. Taraji P. Henson and RuPaul appear, among others.

The divorce was finalized in November 2011.

Kevin Hart appeared in Exit Strategy as Mannequin Head Man.

Kevin appeared in Think Like a Man which was a box office success.

Kevin played Doug in the film The Five-Year Engagement (2012).

Hart then hosted the 2012 MTV Video Music Awards.

In 2013, Hart co-created Real Husbands of Hollywood with Chris Spencer. The show follows Hart along with other married celebrities (each playing a comical fictionalized version of themselves) within the series including Boris Kodjoe, Nelly, Duane Martin, J.B. Smoove, Nick Cannon, and Robin Thicke. Thicke didn't return for the second season due to his music career, though Hart has stated that the door is open for Thicke to return.

Hart was charged on April 14, 2013, on suspicion of drunk driving after his black Mercedes nearly collided with a tanker truck on a Southern California freeway. Hart failed a field sobriety test and was booked for misdemeanor "Driving under the influence".

Kevin had a cameo as himself in "This Is the End".

Kevin Hart: Let Me Explain is a 2013 American stand-up comedy concert film featuring Kevin Hart's 2012 performance at Madison Square Garden. It was released in theaters on July 3, 2013. The film was directed by Leslie Small and Tim Story, produced by Hartbeat Productions, and distributed by Summit Entertainment and Codeblack Films.

On August 5, 2013, Hart was sentenced to three years of probation after pleading no contest to one count of driving under the influence of alcohol.

In 2013, Hart played a boxing promoter in Grudge Match.

In 2014, Hart starred as Ben in Ride Along, opposite Ice Cube.

On August 18, 2014, Hart proposed to Eniko Parrish.

Kevin Hart has been playing poker since around 2010, entering major tournaments such as the WSOP, cashing in one event for $4,783 in 2014. He also plays cash games, like the ones organized by PokerStars, and actually became their Brand Ambassador in 2017. As such, he was featured in PokerStars ad campaigns and promotional content, alongside Usain Bolt.

In 2015, Hart starred in the film "The Wedding Ringer" with Will Ferrell.

In 2015, Hart starred in the film "Get Hard" with Will Ferrell.

On July 16, 2015, Universal Pictures announced that Kevin Hart: What Now?, a stand-up comedy film featuring a performance of Kevin Hart's What Now? Tour, would be theatrically released in the United States on October 14, 2016.

In 2015, Hart hosted the Comedy Central Roast of Justin Bieber.

Hart returned in the sequel, Ride Along 2, which was released on January 15, 2016.

In 2016, Hart co-hosted the 2016 MTV Movie Awards with Dwayne Johnson.

In 2016, Kevin Hart starred in the movies Central Intelligence, with Dwayne Johnson.

Hart animated The Secret Life of Pets.

On April 9, 2015, Hart embarked on a comedy world tour titled the What Now? Tour at the AT&T Center in San Antonio, which concluded on August 7, 2016, at the Columbus Civic Center in Columbus, Georgia.

Hart and Eniko Parrish married on August 13, 2016, near Santa Barbara, California.

As Chocolate Droppa, his alias, he signed to Motown Records and released Kevin Hart: What Now? (The Mixtape Presents Chocolate Droppa), the soundtrack to his stand-up film of the same name.

In 2017, Kevin Hart starred in the movie Captain Underpants: The First Epic Movie.

In 2017, Kevin Hart and Tommy John appeared in an underwear commercial for Macy's.

In 2017, Hart founded Laugh Out Loud, a global media and production company to provide opportunities for the top comedic talent of all ethnicities worldwide.

Kevin Hart starred in Jumanji: Welcome to the Jungle with Jack Black, Karen Gillan, and reteaming again with Johnson.

Hart has also hosted on HQ Trivia and gave away $100,000 to 1 person with Scott Rogowsky on September 26, 2018, which had 699K players.

In 2018, Kevin Hart produced his first film under his production company HartBeat Productions, Night School.

In October 2018, it was announced that through his production company, he has signed a first-look deal with Nickelodeon. Under the deal, Hart and his HartBeat Productions banner will develop and produce live-action, scripted kids content for the network. Hart also has a first-look film deal with Universal Studios.

On December 4, 2018, Hart was announced as the host of the 2019 Academy Awards.

In 2019, Hart's film The Upside, his first headlining role in a drama, was theatrically released. It also starred Bryan Cranston and Nicole Kidman.

Hart also reprised his role of Snowball in the sequel The Secret Life of Pets 2.

On September 1, 2019, Hart was a passenger in a 1970 Plymouth Barracuda that went off Mulholland Highway and rolled down an embankment near Calabasas, California. He and the driver reportedly suffered "major back injuries" and were taken to separate hospitals.

On September 9, 2020, executives from the Muscular Dystrophy Association announced plans to relaunch their annual MDA telethon, move it to October 2020, and make Hart its new host, taking over duties that had been previously held from 1966 to 2010 by comedian and former National MDA Chairman, Jerry Lewis. Entitled by The MDA Kevin Hart Kids Telethon, the new two-hour telethon will be seen exclusively through participating social media platforms; the event was held on October 24, 2020, at 8 p.m. EDT.

Hart has aggressively expanded LOL’s reach since its founding, securing partnership deals with PlutoTV, Roku, Snap, Facebook, Peacock, and YouTube, and in 2020, extending Hart's company’s agreement with SiriusXM.

In 2021, his series Die Hart premiered on May 20 and had a great first weekend, with numerous households streaming the series.

On June 9, ROKU and Hart's multi-platform comedy brand Laugh Out Loud the series' return to Roku with a second season.

In 2021, Hart starred in Fatherhood, a drama about a man whose wife dies shortly after childbirth, leaving him to raise their daughter on his own. It premiered on Netflix on June 18, 2021.