Lose 4% in 4 weeks!


Sep 19 - Oct 16/17 days left
Hosted by DownsizingAaron
Play now!







Sep 19





Hundreds in bonus prizes! Random winners will have their winnings DOUBLED!



Game Begins

Sep 19

Last Day to Join

Oct 02

Final Weigh-In

Oct 17 - Oct 18



*** First 10 players to join will receive a bonus $15 gift card when they win! ***

*** Players 11-20 to join will receive a bonus $10 gift card when they win! ***
*** TWO randomly drawn winners will have their entire winnings from this game DOUBLED by an gift card! ***


Bet $100

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 854,629 DietBetters, 98.71% have lost weight during their challenges. Combined, they've lost 15,377,046 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


about 6 hours ago

We offer weekly Progress Prizes to DietBet Members who complete Progress Weigh-ins. 


This week’s prize: capture that campfire feeling in your own backyard with an outdoor propane fire pit - matching side table included. 9 players will get this cozy, fall weather prize.


Be sure to submit a Progress Weigh-in by 11:59PM PT tonight to be entered. You know you’re all set if your Membership page says “Entered to win.”


Not a DietBet Member? Click here to become a member today for prizes, exclusive features, and added accountability. 


Progress Weigh-ins and Progress Prizes are weekly member-only features that reward you for keeping yourself accountable. Not a U.S. resident? We’ll provide the cash value of the prize. Have more questions about membership? Check out the FAQ here! 


I will do this likes this comment.

Jenn K.

about 9 hours ago

Kristen M. and Kay Mo like this photo.

forestboy accepted the challenge.
09/29/2020 11:03PM
The pot is now $11,100

Jenn K. likes this accomplishment.

Jenn K.

09/29/2020 3:50AM

I will do this , Jenn K. , Kay Mo , Celia and Miquela B. like this photo.

Miquela B.

That’s pretty cool, did you sculpt that?
- 09/29/2020 10:17AM

Jenn K.

No, it's an internet picture that has been going around for many years.
- about 9 hours ago

Kay Mo

09/28/2020 7:32PM
Where's the host up in here? Aren't they supposed to post stuff? Like literally anything?

Jenn K. likes this comment.


Hi Kay
I know how you feel, I felt the same way the first time I joined Aren's bet. However I came back because I need that bigger bet to keep me going, I don't care about the money I make, for me it's about losing the pounds and keeping my money. Get through this one and next time find a bet with a lot players in it. I was just in one that I couldn't even keep up with all the updates.
Good Luck!
- 09/29/2020 12:45PM

Kay Mo

Thanks for replying! So he doesn't post anything at all usually? They make 20% of the pot to be a host so I assumed they'd do something for that money. I've been in another bet that was awesome and one that posted less frequently, but never one that the host didn't post at all so I'm feeling confused! I did the larger bet for the accountability reasons as well but I'll make sure to steer clear of Aaron's next time as there were other $100 choices. I appreciate you replying!
- 09/29/2020 3:21PM


09/28/2020 2:03PM
Today I completed a dietbet I started back on August 31, I am really hoping to get to my goal weight by the end of the year. I also joined a small dietbet that end before Halloween because I planned on eating alot of candy :)

Jenn K. and Kay Mo like this comment.

Miquela B.

When Halloween comes and you have reached your goal, maybe you won’t want the candy!
- 09/29/2020 10:18AM

Kay Mo

09/28/2020 8:23AM
This is the quietest diet bet I have ever done.

Jenn K. likes this comment.

Jenn K.

09/28/2020 3:35AM

Miquela B. , Jenn K. and Kay Mo like this photo.

Jenn K.

09/27/2020 5:34AM

Kay Mo , Jenn K. and I will do this like this photo.


09/26/2020 4:09PM
  • Hiked 8.3 miles/2,100 feet gain on Boney Mountain, and one App said 1,032 calories burned. It’s easy to eat that all up in carbs to power me up the mountain. Started at the houses shown way off in the distance, and got great views up there.

Kristen M. , Ron , Miquela B. and Jenn K. like this photo.

Ready to bet on yourself?