Skip to content

Free Dieting Calculators

Calorie, BMI, BMR, and macro calculators to plan nutrition and track weight goals.

Not yet verified
Demo online
MIT

Open the official app on www.freedieting.com

This tool is hosted by its maintainers. Click below to open www.freedieting.com in a new tab — it's their official demo.

Browse calculators tools →

What's next with Free Dieting Calculators?

Choose how you want to get started.

Use it free

Open the official tool or demo — no account needed.

Free

Self-host it

Run the open-source version on your own infrastructure.

Open

What is Free Dieting Calculators?

Free Dieting Calculators is an open-source web tool designed to help users estimate their daily caloric needs and track progress toward weight management goals. It addresses the challenge of creating personalized diet plans by providing data-driven insights based on factors like activity level, weight goals, and metabolic rates. The tool is primarily used by individuals seeking to lose, maintain, or gain weight, as well as fitness enthusiasts looking to optimize their nutrition strategies. By calculating calorie requirements and tracking energy expenditure, it simplifies the complex science of weight management into actionable steps. The project emphasizes customization, acknowledging that generic calorie recommendations are ineffective without individualized adjustments.

How it works

Free Dieting Calculators is a web-based tool that estimates daily caloric needs using formulas like the Mifflin-St Jeor equation. It helps users determine how many calories they should consume to maintain, lose, or gain weight based on their activity level and goals. The tool integrates concepts from nutritional science, such as the 3500-calorie rule for fat loss, to provide practical guidance. It also includes features like BMI calculation and macro ratio estimation to support holistic health tracking. The tool calculates daily caloric needs, estimates calories burned through activity, and provides guidance on creating a calorie deficit for weight loss. It also includes a BMI calculator and body fat percentage estimator. Users can adjust their calorie targets based on workout intensity, with warnings about recalculating as weight changes.

How to use it

  1. 1Input personal details like age, weight, height, and activity level. 2. Select a weight goal (lose, maintain, or gain weight). 3. Adjust calorie targets based on workout frequency. 4. Recalculate periodically as weight changes. Practical tips include being honest about exercise habits and using the tool as a baseline rather than a strict rule.

What it can do

  • calorie and BMR calculator

Use cases

Assumptions and limitations

Assumptions

  • source: https://www.freedieting.com/calorie-calculator
  • license: Open source
  • privacy: Opens an external demo

Limitations

  • Requires JavaScript to function, which may not work on outdated browsers
  • Lacks personalized medical advice or dietary restrictions customization
  • Static formulas may not account for individual metabolic variations
  • No integration with food databases or real-time tracking features
  • Does not provide detailed workout plan recommendations

Understanding the result

Calorie, BMI, BMR, and macro calculators to plan nutrition and track weight goals.

Tool details

  • Clearly flagged when a network request is needed.
  • No account, no sign-up, and no tracking of your content.
  • Powered by (MIT).
Built with
(https://www.freedieting.com/calorie-calculator)
License
MIT
Runs locally
No — requires a network request
Verification
Not yet verified
Input
Query
Output
Text
Open-source source & license

Built with https://www.freedieting.com/calorie-calculator. OpenToolVault provides the discovery and browser interface while crediting the original project maintainers.

Built with
License
MIT
View source on GitHub

Open-source project

OpenToolVault is an independent directory. We are not affiliated with or endorsed by this project.

References

Frequently asked

How does the calorie calculator determine daily needs?

The tool uses standard formulas like the Mifflin-St Jeor equation to estimate basal metabolic rate, then adjusts for activity level and weight goals. Users input age, weight, height, and activity level to generate a personalized estimate, with notes about recalculating as weight changes.

How does the tool account for exercise?

The calculator includes a 'calories burned' feature that estimates additional energy expenditure based on activity level. Users adjust their calorie targets by selecting their workout frequency, though it does not track real-time exercise data or intensity.

How do I recalculate my caloric needs?

After losing weight or changing exercise habits, revisit the tool and update your weight and activity level. For example, if you lose 10 pounds, input your new weight and adjust your target to reflect the lower caloric maintenance needs.

How does this tool compare to commercial diet apps?

Unlike paid apps, Free Dieting Calculators offers open-source transparency and no subscription fees. However, it lacks features like food scanning, recipe databases, or integration with wearable devices found in apps like MyFitnessPal or Fitbit.

What if the calculator doesn't work on my browser?

The tool requires JavaScript to function. If it fails, check browser settings to ensure JavaScript is enabled. Update to a modern browser like Chrome, Firefox, or Edge for compatibility with web-based calculators.

Spotted something wrong with Free Dieting Calculators, or want to maintain it? See how to help.