Lose Together, Win Together!

Lose 4% in 4 weeks!

Lose Together, Win Together!

Feb 16 - Mar 15/Game has ended
Hosted by Courtney and Alex R.
Join another game







Feb 16





Lose weight with Biggest Loser & Extreme Weight Loss contestants!!



Game Begins

Feb 16

Last Day to Join

Mar 01

Final Weigh-In

Mar 16 - Mar 17



We are giving away over $1,000 in prizes if we get 1,000 players! Invite someone & if they sign up, you are eligible for a prize! Prizes include an iPad mini, fitness/activity tracker, online training sessions, Quest bars, & more! INVITE YOUR FRIENDS! :)


Bet $30

to start

Lose 4%

in 4 weeks


Split the pot

How do you verify the weight loss?

For all official weigh-ins, you'll be prompted to submit your official starting weight. Our standard weigh-in process involves you submitting 2 photos: one of you standing on a scale in lightweight clothing (no shoes, hats, belts, watches, coats, or outerwear), and another of the scale’s readout with your weigh-in word written on a piece of paper.

What you'll need

  • A scale (preferably digital)
  • A digital camera or smartphone
  • A full-length mirror or someone to take your photo
  1. Privacy FAQ +
  2. How we prevent cheating +

Does this actually work?

Out of 908,130 DietBetters, 98.73% have lost weight during their challenges. Combined, they've lost 16,867,288 lbs and won $62,263,235. In other words...yes.

All results shown on DietBet are from actual users. Individual results may vary.

Don't take our word for it

Adriana H.

05/02/2015 12:08PM
I'm starting my very first game... "Raw-Food Challenge" lets start juicing, smoothing and more! You're welcome to check it out and join!!!


03/18/2015 7:09AM - via iPhone
  • Still hanging out. Upside down and sweaty! Congrats to all.

Lisa S. likes this photo.


03/18/2015 4:54AM
I binged on pizza and pop on my shopping trip and I am in pain.Ohhhh why ohhhh why do I do this.I know the outcome will never be different, nothing will change oh well live and learn congrats everyone

Eric S. , Lisa S. and Kissy like this comment.


I thought I would be in pain but not really. I need the motivation for next diet bet.


03/18/2015 12:12AM
After losing over 50 pounds i went shopping and bought new clothes.
ohhh what a feeling it feels great and i look good.Thank you diet bet host and diet bet friends i couldnt do it without you !!!!

Eric S. , Donna N. and like this comment.

View 3 more comments

stan f.

Had the same feeling Rush. Kept asking my wife for next sized down thru the changing room and she thought I was joking. Ended up 3 pant sizes smaller since January! Off to find another DietBet challange now. This challange program is awesome! Congrats to you on your progress. Stay the course! Thanks to all that administer, referee, post and motivate. You're all life savers!

Lisa S.

Whooooo hooo!!!!!!!!


03/18/2015 12:10AM
I just binged on fiber one bars....

Eric S. and rush like this comment.

View 6 more comments


I know Daci your so right. I had carb relapse, time of month plus stress. lmao. I am learning. I am in Jillian Michaels diet bet so now I can push harder. I have been doing this for two months and lost around 20 lbs.


quest bars helped but there more expensive.

Jennifer J.

03/18/2015 12:00AM - via iPhone
  • Feeling great! Seeing results!Thank you all!

Eric S. , Francesca D. and like this photo.

Brock B.

You look beautiful


03/17/2015 11:42PM
Never again am I leaving a dietbet till the last minute!! After a hard couple of weeks (and even harder couple of days) the final few pounds only disappeared at the last moment, so lucky!
Now, I've got to remember that I'm not allowed to celebrate losing weight by eating lots of food!! That's what got me into this pickle...
Hope everyone's feeling good today whether they won or not :)

Eric S. , Ashley Y. and like this comment.


03/17/2015 9:28PM
I just wrote a new blog post called I should have listened when I said nobody get hurt!. Check it out.

Eric S. , Aubrey H. and rush like this comment.


03/17/2015 9:25PM
Hey everyone! Now that the game is over. Do you want to continue to receive daily motivation and support? Check out my fitness page! I post daily motivational quotes, recipes, before and after stories etc. Check it out and click "Like".

Eric S. , rush , KwajalineClark and Anjy like this comment.

Zoltan P.

03/17/2015 9:19PM - via android
I gained a lot of weight since last year august when I had my lower back disks torn and was unable to workout, for many months. But I felt motivated when my fiance told me about this game. I was already feeling better was ready for the gym. I also bought a punching bag and started running on the treadmill. I started to punch the bag half hour a day to a Kempo dvd. I honestly think the punching helped me a lot to lose weight I would recommend to everyone, it's fun :).

Eric S. , Brittlyn N. and rush like this comment.

Ready to bet on yourself?