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

New games start several times a month. Pay your bet monthly, or pay the entire bet upfront and play month 6 for FREE. The rules are simple: lose 10% in 6 months. Everyone who wins splits the pot equally. To help you stay on track, there are interim goals and prizes each month. You can do this!
Join game

Try it risk-free!

Cancel up to 14 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. Disqualification Limits +

3. Play

You now have 6 months to lose 10%. Follow our slow-and-steady pacing goals to success.

10% is easier when you break it up. See below for each round's goals. Hit them and you'll split that round's pot. Miss them? No worries. You can still catch up. Half the prizes are spread across the first five rounds while the other half is split equally among everyone who crosses the 10% finish line at the end. It's all about pacing yourself. You can do this!

Round 1 – 3%
Round 2 – 6% cumulative
Round 3 – 8% cumulative
Round 4 – 9% cumulative
Round 5 – 10% cumulative
Round 6 – Maintain 10% cumulative

Note: To prevent unsafe sprints at the end, you must have lost at least 6% by the end of Round 5 to be eligible to win the final pot.

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

At the end of Round 6, you'll have 48 hours to weigh out. Please enter your final weight even if you have not won. You will not be required to submit photos for verification unless you are a winner. Any player who has lost at least 6% by the end of Round 5 is eligible to compete for the Grand Prize, even if they haven’t won before.

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.

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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.