How do I calculate calories burned? Enter your numbers above and the result updates instantly. For example: Activity: Running (6 mph) · Weight: 170 lb · Duration: 45 min → Calories burned: 567.
Is this Calories Burned Calculator free? Yes — completely free with no sign-up or paywall. It runs entirely in your browser and keeps working offline; the numbers you enter never leave your device.
How accurate is it? It uses the standard published formula for calories burned. Results are estimates for planning — not financial, tax, medical, engineering, or legal advice.