The star center announced on Monday he will return for the 2023 season.
"I have put much thought into whether it makes sense to play another season," Kelce wrote on Twitter.
"After talking it over with my wife and many other friends and family, I have decided to return for another year.
"Thank you to all my supporters and detractors for fuelling me, I ain't f***ing done yet!"
Considered one of the best centers in the NFL, the 35-year-old Kelce has anchored Philadelphia's offensive line since being drafted by the franchise in 2011, starting every game for them since the start of the 2015 season.
A 12-year veteran, Kelce was named to his sixth Pro Bowl this past season while also earning a first-team All-Pro selection for the fifth time.
He won the Super Bowl with Philadelphia during the 2017 season and helped the Eagles reach this past season's Super Bowl, where they lost 38-35 to the Kansas City Chiefs and his brother – star tight end Travis.
Kelce ended speculation over his future on Friday, the 33-year-old star putting retirement on hold for another season.
A vital member of Philadelphia's championship run in 2017, Kelce has reportedly reconstructed his contract to offer the Eagles cap relief.
"I'm really fired up to be able to come back and play for the Eagles again," Kelce said on Friday.
"I've always said I'm playing until I'm not and I still have a very strong desire to play the game of football. I still want to do it. I still want to be around the guys. I want to be around the building, around the coaches. I still enjoy that aspect of it and I'm not ready to stop doing it yet.
"I'm excited with a lot of the energy going around right now and, also, I didn't want to end my career on a season like we had last year. It wouldn't feel right.
"I want to leave the Eagles knowing that I left it in good hands."
Kelce was selected by the Eagles in the sixth round of the 2011 NFL Draft.
He is a four-time Pro Bowler, while Kelce has been named an All-Pro on three occasions.
Kelce's return is a big boost for new head coach Nick Sirianni, who has replaced Doug Pederson, after the Eagles went 4-11-1 in a forgettable season.
"I'm having fun and as long as I'm having fun and I feel I'm playing at a level I want to play at, I'm going to keep doing it," Kelce said. "I'm looking forward to what's ahead for us."
The pair will become the first brothers to face off in NFL's biggest match, with both aiming to land their second ring, when the Eagles take on the Kansas City Chiefs in Arizona.
Mother Donna and father Ed Kelce will be in attendance at State Farm Stadium for the family affair, and older brother Jason would rather be in his position than theirs.
"I think it's always stressful for the people watching," he told reporters. "I think that's probably more [stressful]... not even just parents but also the coaches and fans.
"When you don't have control on the field of what's happening, I think that's a stressful situation.
"I feel like when you're playing, there's a sense of control in the outcome and you can have a difference in it yourself. So it's a little bit less stressful.
"I would imagine my parents would probably be a little stressed out. I think they are every time they're watching a game."
Jason won the Super Bowl with the Eagles in 2017, while Travis – two years younger than his brother – did so with the Chiefs in 2019.
While rivals on the field, however, Jason explained the pair remain as strong as ever off it, even if the dynamic of their relationship has changed over the years.
"I grew up the older brother, so I was then much more mature, which I don't know if that's a good word to describe me, but I was more mature than him," he said.
"I think when you get to a certain point being brothers, it becomes more of a peer relationship.
"I'm no longer telling him what to do or showing them the ropes or trying to offer guidance as an older brother.
"Now it's more just a friend and a different type of brother, right? He does the same for me. I get advice from him now, which growing up didn't happen too often.
"I think the dynamic has changed a little bit in that regard. We get to genuinely just enjoy each other's personalities and who we are as individuals, and I think that makes it fun."
The 32-year-old, a three-time first-team All-Pro over the previous three seasons, did not address his future following the Eagles' playoff loss to the Seattle Seahawks in January, fuelling speculation he could call it a day.
Kelce is under contract through the 2021 season, but the anchor of the Eagles' offensive line posted a retirement announcement on social media on Thursday.
However, that related to his arm wrestling career, with Kelce explaining he would be back in the NFL.
"Until now I haven't [wanted to] address my future because I have been mulling it over for some time this offseason," Kelce wrote on Instagram.
"I wanted to allow my body and mind to fully recover from the rigours of an NFL season, and take time with my family to see what lies ahead.
"After thinking long and hard about this I have come to a decision. I have decided to RETIRE... from arm wrestling."
After revealing his 2-0 "drunken arm wrestling" record included a win over Philadelphia Flyers captain Claude Giroux, Kelce addressed his NFL future.
"Despite this retirement, I am fully excited for the 2020 season and will be out there with my team-mates, coaches and hopefully fans this coming season," he added.
"Enough media members and fans have reached out if I am playing next season, and I just wanted to make an announcement so I can stop getting asked.
"Can't wait to be out there this season, can't wait to have sports back, and I can't wait till this lockdown is over."
It is the first time a selection has been made exclusively by players, with the most recognised All-Pro team being the one generated by votes from NFL writers and broadcasters, organised by the Associated Press.
NFLPA president J.C. Tretter issued a statement on Tuesday outlining why he felt it was important for players to have their say.
"For the first time ever, NFL players are honouring the best in the game by naming our Players' All-Pro team," he said. "Every active NFL player had the opportunity to cast their vote to decide who is really the best at each position.
"We compete against each other all season long, watching hours and hours of film week after week after week, and yet we have never had an opportunity to truly use our expertise to select the best of us.
"We think it is important that players take the time to define ourselves, because so far, we have allowed everyone else to either pick or dilute our voices."
The team was unveiled on Wednesday, with selections including Kansas City Chiefs quarterback Mahomes, Las Vegas Raiders running back Josh Jacobs, and his team-mate Davante Adams and Minnesota Vikings' star Jefferson as wide receivers.
The Chiefs and the San Francisco 49ers were the best represented teams, with four players each.
2022 Players' All-Pro Team – Quarterback: Patrick Mahomes (Kansas City Chiefs), Running back: Josh Jacobs (Las Vegas Raiders), Fullback: Kyle Juszczyk (San Francisco 49ers), Wide receivers: Justin Jefferson (Minnesota Vikings), Davante Adams (Las Vegas Raiders), Tight end: Travis Kelce (Kansas City Chiefs), Left tackle: Trent Williams (San Francisco 49ers), Left guard: Joel Bitonio (Cleveland Browns), Center: Jason Kelce (Philadelphia Eagles), Right guard: Zack Martin (Dallas Cowboys), Right tackle: Lane Johnson (Philadelphia Eagles), Edge rushers: Nick Bosa (San Francisco 49ers), Myles Garrett (Cleveland Browns), Interior defensive linemen: Chris Jones (Kansas City Chiefs), Aaron Donald (Los Angeles Rams), Nose tackle: Dexter Lawrence (New York Giants), Off-ball linebackers: Fred Warner (San Francisco 49ers), Roquan Smith (Baltimore Ravens), Cornerbacks: Pat Surtain II (Denver Broncos), Darius Slay (Philadelphia Eagles), Free safety: Minkah Fitzpatrick (Pittsburgh Steelers), Strong safety: Derwin James Jr (Los Angeles Chargers), Kick returner: Cordarrelle Patterson (Atlanta Falcons), Punt returner: KaVontae Turpin (Dallas Cowboys), Core teamers: Jeremy Reaves (Washington Commanders), Justin Hardee (New York Jets), Kicker: Jason Myers (Seattle Seahawks), Punter: Tommy Townsend (Kansas City Chiefs), Long snapper: Morgan Cox (Tennessee Titans).
