About Cronometer.com

Cronometer is the premium web application for tracking your nutrition and health data.

Calorie reduced diets require a lot of information to perform optimally. In order to restrict caloric intake, but remain healthy, users of the diet must track their vitamin, mineral, and protein intakes with great care.

We aim to provide a complete solution for the smart dieter. Many diet-tracking applications fall short in some vital areas. Either they are not detailed enough, or they suffer from critical usability flaws. We believe that a diet tracker must be effortless to operate for the activity for which it will be used most of the time; keeping track of the foods you eat.

Cronometer is free to try.

Simply click the link here to get started.


  • Easy to use, Free to try
  • Track 60+ Nutrients for 7500+ foods
  • Log your Diet, Exercise, Biometrics, and Notes

View Comments (69)

    • When the creator started cronometer many years ago, he was making it specifically for the CRON diet (Caloric Restriction with Optimal Nutrition).

      Best regards,


  • I just started using Cronometer after trying out a lot of other apps, and I am thrilled that I found it as I find it way better than any other system. Just one thing - would it be possible to get Vitamin K broken down into Vitamin K1 and K2 (MK4 and MK7) please?

    • Joan

      Thanks for the compliments and glad you like Cronometer. The data in Cronometer is for vitamin K, which is K1, K2, and K3. The databases out there don’t distinguish between them because the agencies doing food testing don’t test for the 3 different forms. Its all lumped into a vitamin K amount. Luckily, it is fairly easy to get all you need.

      Best regards


  • Using iPhone 4s with IOS 9. In the past, the Cronometer "Rearange Entries" action worked. Now it appears to not be working.

  • I use Cronometer on my iPad and love it. I put my weight at 155 but it changes it to 152.1. What should I do to correct it? Also, can I enter a target weight.?

    • Carol

      I went and looked and it is showing correctly. Your most current diary has a 155# entry and that is what is displayed on your weight graph and on your profile page. If you are looking at the graph for your weight goal on the profile page, I do see a 152.3 at the end of the graph line, but that is a projected weight for Mar 7. Not sure that is what you are referring too.

      You can set a target weight on the profile page in the weight goal box. You will see a blue weight number on the right of the graph. Click that to edit your target weight goal.

      Hope that all helps. You can send this to support@cronometer.com as well if you want to keep your personal data off the feed.

      Best regards


  • My weight chart just went flat. I have used Chronometer for a over a year - maybe even 2 - and this has never happened before. It used to separate out the variations so you could see it in graph form. Now no matter the change the graph are dots in a row.
    Any fix (PS I bought the gold edition -6-8 months ago thinking this would give me more - but it hasn't offered me much)

    • Val

      Can you send this to us at support@cronometer.com with the email associated with the account and we can take a look from our end. Be sure you have the zoom to fit box checked on the top of the chart.

      Best regards


  • Hi, i'm coming to the end of my subscription and I wanted to know if the lifetime membership is still available? it doesn't come up as an option when on the free site but still does on the subscription site.

  • Hi Guys
    Love the app , has been the greatest support transitioning to a keto lifestyle.

    I am a gold make her however have not received the updated app settings.
    Could you please let me know if I need to make any special settings adjustment.

  • Hi there,

    Ive recently started using cronometer and noticed a few things. When I add Fage, Greek Yogurt it does not add anything in terms of calcium. Fage greek yogurt has a lot of calcium as do almost all yogurts. In addition I tried to add spinach in and i didnt register any iron whereas spinach is full of iron. Not sure why this is happening but I am quite concerned now that the app doesnt capture nutrients appropriately. Is there something wrong with the app or something I could do better?

    Really like this app to work



    • Hi Nico. You can report missing or incorrect data in the app or to our support email. In general, there's two types of data in the system -- branded products only have data that's on the label (and calcium is not a required item on nutrition labels, so the manufacturer may not provide it) and we have 'common foods' with comprehensive nutrition data that are usually generic / whole food listings. So if you search for a generic version it will have much better nutrient coverage than a specific brand label. More info here: https://cronometer.com/blog/6-tips-getting-nutrition-data/

  • Need collapsing diary category entries. To much scrolling up and down the page to see results in bottom section, nutrients, kcal, etc...