Estimate daily maintenance calories and simple weight loss or gain targets.
Health
Calorie Calculator
Calorie Calculator is a free online tool that helps you calculate a focused result directly in your browser.
The calculator appears before this guide so visitors can use the tool immediately, while the text below helps explain the purpose, method, and common use cases.
Enter the requested values, review the labels, and press the calculate button. The result updates on the page so you can change inputs and compare scenarios quickly.
Use the default values first if you want to see how the calculator works, then replace them with your own numbers.
Daily maintenance calories are estimated by multiplying BMR by an activity factor. A common weight loss target subtracts about 500 calories per day, while a gentle gain target adds about 300 calories per day.
Make sure the units match the labels shown in the form before relying on the result.
For example, a BMR of 1,700 with a moderate activity factor of 1.55 gives estimated maintenance calories of about 2,635 per day.
Examples help you understand the scale of the result before using your own data.
Yes. It runs in your browser and is free for quick reference.
The result is an estimate or educational calculation. Confirm important health, finance, legal, or engineering decisions with a qualified professional.
Each input is part of the formula, so changing one value updates the calculation immediately.