How it works

Bet on yourself to lose weight. Reach the goal … split the pot!
Read each game’s rules below.

What's your goal?

1. Join

Choose from games starting soon, or start your own and challenge your friends. To begin you'll put money in the pot. After four weeks, whoever's lost 4% of their body weight will split the pot.
Join game

Try it risk-free!

Cancel up to 7 days from the game start and get a full refund.
Money Back Guarantee

Money back guarantee

2. Weigh-In

Two days before your game begins, 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. The weigh in word acts as a time stamp for when the photo was taken, so it will change depending on when you weigh in. Please be sure to use the current word that is displayed on the screen as you begin the upload process. Each weigh-in submission is individually reviewed by a DietBet Referee.

Submit 2 photos

We never post weigh-in photos and your actual weight is keept private by default.

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 +

3. Play

Congratulations, your starting weight has been approved!
You've now got 28 days to lose 4%. Use DietBet to post photos, comments, and get weight-loss tips. Make sure to invite friends to cheer you on.

Update your weight as often as you like. Self-reported weigh-ins during the game are unofficial but can help hold you accountable.

DietBet on-the-go!

Get the support you need everywhere you go. Share that workout or healthy snack, or help someone else avoid the office birthday cake. All from your phone!

4. Weigh-Out

You're almost there! After the final day, you will have 48 hours to weigh out. Even if you have not won, please enter your final weight. You will not be required to submit photos for verification unless you are a winner.

5. Win!

Wow, you just got paid to lose weight! Within 24 hours after the final weigh-out period ends, the results are made official and the pot (less DietBet's fee) is divided among the winners. Winners are notified by email of their payout, which is added to their DietBet account as Points. You can apply your winnings to your next DietBet or cash out now via PayPal and treat yourself to something special… you earned it!

No Lose Guarantee!

This guarantee ensures that if you win your dietbet, you won't lose money. Most winners make money but in the event that your game has an unusually high percentage of winners, we'll forfeit our cut in order to ensure that nobody loses money. So the worst case scenario is that you'll end up losing weight for free, which is still a big win.

Find a Kickstarter gameOr create your own

Compare Games

Which game is right for you?

How long is the game?

What's the goal?

How much do people lose?

What's the bet amount?



4 weeks

Lose 4% of your body weight

Winners lose 9.4 lbs on average

$35 on average



6 months

Lose 10% of your body weight

Winners lose 25.8 lbs on average

$35/month or
$175 paid upfront

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