12 Fitness Calculators

12 Fitness Calculators

Fitness & exercise calculators

3 ratings
18 reviews
$3.99 Free

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Price history


Details

  • Released
  • Updated
  • March 28, 2009
  • March 1, 2025

Features

12 Fitness Calculators screenshot #1 for iPhone
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About

This app offers a suite of 13 popular fitness, exercise, and weight loss calculators using scientifically accurate formulas. It provides detailed instructions and interprets results, supporting both metric and English units. The app prioritizes user privacy by not tracking or collecting data and is ad-free.

βœ“13 fitness calculators
βœ“Scientifically accurate formulas
βœ“Detailed instructions and result interpretation
βœ“Metric and English unit support
βœ“Stores last settings
βœ“No data collection or ads
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What's New in 12 Fitness Calculators

3.3

March 1, 2025

Replaced body fat calculator with two calculators (one for skinfold body fat calipers and one that only requires a tape measure or string), improved user interface, and made several overall improvements.

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User reviews

Best Collection of Fitness Calculators

This app contains the best fitness calculators for home users and professionals. The latest release corrects the issues mentioned in previous reviews (for example every calculator now saves your information so you don't have to re-enter it). It provides a dozen calculators missing from many fitness and nutrition apps. I highly recommend it to anyone interested in losing weight, improving their workouts or assessing their progress.
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Useful App

This is a great tool, I use it all the time. I do multiple sports so this helps to keep me on track to get to my ideal fitness. Some of the applications are more advanced but once you take time to learn them they are really useful. App good for many different users.

Useful App

It's great to have all my necessary exercise calculators readily available on one app.
I'm getting towards my ideal BMI by using this app without overdoing it. Calories, weight, distance, speed, BMI...all kept track of and managed here.

Ok....needs profile

It calculates but there is no profile so you have to reenter your stats every time. Would also be useful to have a progress log for the price that it is

One of the Calculators is incorrect

This app would be perfect if it weren't for the fact that at least one of the calculators (the one for target weight) is incorrect if you are using the metric version. It says that in order to lose 1kg of weight in a week, you need a 500 cal deficit per day. To lose 1lb a week, it also states that you need a 500 cal deficit per day. 1kg=2.2lbs, 1lb of weight equates to 3,500 cal, so in order to lose 1 kg, you would need at least a 1100 cal deficit per day. I tested this out by calculating what kind of deficit I would need to lose 10kg or 22lbs over a 10 week period (both being the exact same weight, just different units)...it said I needed over twice the deficit to lose 22lbs than I would to lose 10kg!. After paying almost $5 for this app (the most I have ever paid), I'm really disappointed that this bug exists. Please fix it and I will happily give it a 5-star rating
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Developer apps

FAQ

What are the 12 Fitness Calculators?

12 Fitness Calculators offers 13 tools including BMI, BMR, body fat percentage (two methods), calories burned, daily calorie needs, distance-time-pace-speed, metric/English conversion, 1 rep max, resting heart rate timer, and splits for various activities. It uses scientifically accurate formulas from reputable organizations.

Does 12 Fitness Calculators track my data?

No, 12 Fitness Calculators does not track you, collect any data, or include advertising. The app is designed with user privacy as a priority.

How does 12 Fitness Calculators interpret results?

Each calculator in 12 Fitness Calculators includes detailed instructions and a description. You can tap the information icon on any calculator to spin it around and view how to interpret the results and your rating.

Can I use 12 Fitness Calculators in different units?

Yes, all calculators within 12 Fitness Calculators support both Metric and English units. The app also conveniently stores your last settings, such as age, weight, height, and selections.

Is 12 Fitness Calculators free to use?

Yes, 12 Fitness Calculators is available for free. It does not have any in-app purchases or advertisements, providing a completely free and uninterrupted user experience.

What devices is 12 Fitness Calculators available on?

12 Fitness Calculators is currently supported on iPhone and iPod devices. It is designed for iOS users looking for fitness calculation tools.

How often is 12 Fitness Calculators updated?

The latest version of 12 Fitness Calculators is 3.3, last updated on March 1, 2025. This indicates a commitment to maintaining and potentially improving the app over time.

What is the age rating for 12 Fitness Calculators?

12 Fitness Calculators has an age rating of 4+. This means it is considered suitable for users of all ages, making it accessible for younger individuals interested in fitness tracking.