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Lose 4% in 4 weeks!

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Apr 13 - May 10/Game has ended
Join another game







Apr 13




Game Begins

Apr 13

Last Day to Join

Apr 26

Final Weigh-In

May 11 - May 12


Bet $10

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 1,044,117 DietBetters, 87.14% have lost weight during their challenges. Combined, they've lost 17,343,373 lbs and won $104,266,887. In other words...yes.

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

Don't take our word for it

Kristin M.

05/17/2013 9:46AM - via iPhone
How do I cash in to get my winnings?


Click your name in the upper right hand corner and go to your credits. You'll be able to transfer your winnings to your PayPal account.


05/14/2013 11:39AM
Congrats to all who competed and WON! And kudos for everyone signed up who didn't but gave it their all. I'm looking at joining another competition around June 3 - 4 in hopes of losing another 10 - 12 lbs before Fourth of July. DietBet.com is THE BEST.

Zaria Q likes this comment.

Melissa M.

05/13/2013 8:44AM - via iPhone
What new dietbet are people going to join? Looking to start a new one soon!!
View 2 more comments

Mariyam M.

Tumblr 4n4 part II!

Mariyam M.

Check it out here: http://www.dietbet.com/games/15025

Melissa M.

05/13/2013 2:18AM - via iPhone
17.5 lbs lost this month. Sounds unbelievable but I did it by changing my eating habits. Looking forward to signing up for a new dietbet as this was my first! A great experience! I doubt I'll lose that much next month!

nerakdunbar likes this comment.

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That's amazing. I lost 15.8 and this was my first DietBet as well. I'm on the lookout for my next one too. :)


Incredible progress and results! Way to go!

Sarah Fallling Forward

05/12/2013 9:03AM
Thank you to a well timed cold for the loss of appetite yesterday. and thank goodness this is over just in time for Mothers Day brunch. Good job everyone.

nerakdunbar likes this comment.

Laurie K.

05/12/2013 7:14AM
Well that bites. I won the first two I did but missed this by a pound. I will do better next time!

Dawn and nerakdunbar like this comment.

Lisa B.

I feel ya. That hurts. BUT ONLY BY 1 POUND! I mean...you are so on course. Good attitude. Good playing with players like you.

Jill W

05/12/2013 6:06AM
I got my verification email when I sat down to dinner and I still skipped dessert! GO ME!

nerakdunbar , Dawn , erinerinerint , Lisa B. and Heidi like this comment.


05/11/2013 7:03PM
Boom boom boom. 11.2 pounds lost. Something like 115% Just waiting for verification......

librarian5 , Dawn , Heidi and nerakdunbar like this comment.


Oh wow. Verified in about 8 minutes. Thank you thank you diet bet staff. I've been waiting two weeks to eat the chocolate in the freezer


I'll go running again tomorrow and eat well the rest of the month ya'll. I just miss chocolate.


05/11/2013 5:56PM - via iPhone
My weigh-in was accepted and I am now an official winner of my diet bet. Waiting impatiently to see how much money I won.

nerakdunbar likes this comment.


05/14/2013 12:00AM
Have ideas on how to improve DietBet? We're a small startup and can't afford to run focus groups, so we ask for feedback from players like you. Please fill out our short feedback form and give it to us straight.

Ready to bet on yourself?