Calories Burned Calculator
Estimate calories burned for any activity
Use this when you need a fast, accurate result — no sign-up, works entirely in your browser.
How to Use
- Enter your details into the fields above.
- Click the calculate button to get your result instantly.
- Use the clear button to start a new calculation.
Example
- Running, 70 kg, 30 minutes → ≈ 360 kcal (12.0 kcal/min)
- Heart-rate method: male, 70 kg, age 35, 140 bpm, 30 minutes → ≈ 389 kcal — vigorous (70–85% of max heart rate)
Formula
Activity method uses the ACSM equation kcal/min = MET × 3.5 × weight(kg) ÷ 200 (METs: walking 3.8, running 9.8, treadmill 8.3, cycling 7.5, swimming 7.0, rowing 7.0, elliptical 5.0, yoga 3.0, weight training 5.0). The heart-rate method is more accurate and uses the Keytel et al. (2005) equations — men: kcal/min = (−55.0969 + 0.6309×HR + 0.1988×kg + 0.2017×age) ÷ 4.184; women: kcal/min = (−20.4022 + 0.4472×HR − 0.1263×kg + 0.074×age) ÷ 4.184.
About Calories Burned Calculator
Estimate calories burned for any activity. This free online tool gives you fast, accurate results without registration or downloads.
Everything runs locally in your browser, so your data is never uploaded or stored — privacy first.