About FitFormula

FitFormula is a free collection of 9 strength training, running and cardio calculators. Every tool works instantly in your browser, with no sign-up needed.

FitFormula is part of AznikaHub, a group of focused, single-topic tool sites run by AZNIKA, a technology company registered in the United States in 2024. Each site covers one subject so the tools stay simple and easy to find.

What we believe

• Answer first. The calculator is at the top of every page; explanations come after.
• Show the math. Each tool explains how it works, shows the formula and gives a worked example you can check.
• Respect privacy. The numbers you type are calculated in your browser and are not sent to our server.
• Be honest about limits. Results are estimates and general information, not professional financial, medical, legal or tax advice.

How the site is funded

FitFormula is free because it shows ads served by Google AdSense. Advertisers never influence our formulas or content. Read our editorial policy and privacy policy for details.

Contact

Questions, corrections or ideas? Use the contact form or suggest a new calculator.