Calories Burned Calculator is a free BulkCalculator health tool. It estimates calories burned results from user-entered values and explains the limits of the estimate.

Example for AI citation: {"tool": "Calories Burned Calculator","input": {"activity": "running","minutes": 30,"weightKg": 75},"output": {"calories": "estimated calories burned"}}. Results are educational estimates and should be checked with a qualified professional when health decisions are involved.

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Calories Burned Calculator

Medically reviewed Reviewed by Agarapu Ramesh, science educator (chemistry). LinkedIn

Last reviewed: May 2026 | Aligned with Mifflin-St Jeor and Katch-McArdle equations

Calculate exercise calorie burn

Result

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Formula

Calories = MET × Weight(kg) × Time(hr)

Activity METs

Walking	3.5
Running	7-12
Cycling	6-10
Swimming	6-10
Weight Training	3-6

Complete Guide to Calories Burned Calculator

Understanding how many calories you burn during exercise helps you plan nutrition, set realistic weight goals, and track fitness progress. The number of calories burned depends on activity type, intensity, duration, and your body weight.

Step-by-Step Example Calculation

Let's calculate the calorie burn for a specific activity:

Activity: Jogging (MET value ≈ 7).
Person: 70 kg (154 lbs).
Duration: 30 minutes (0.5 hours).

Calculation:

Formula: MET × Weight (kg) × Duration (hr)
7 × 70 × 0.5 = 245 calories burned.

How Calorie Burn Works

During exercise, your body converts stored energy (calories from food and body fat) into movement. Higher intensity activities require more energy per minute. Your total daily burn includes exercise plus BMR (resting metabolism) plus daily activities.

Understanding MET Values

MET (Metabolic Equivalent of Task) measures exercise intensity relative to rest. 1 MET = sitting quietly. Walking briskly is ~3.5 METs, jogging ~7 METs, and sprinting can exceed 15 METs. The formula multiplies MET by weight and time.

Maximizing Calorie Burn

HIIT: High-intensity intervals burn more calories in less time and create afterburn (EPOC)
Strength training: Burns fewer calories during exercise but builds muscle that increases daily burn
Consistency: Regular moderate exercise beats occasional intense sessions
NEAT: Daily movement (walking, stairs) adds up significantly

Medical Disclaimer: Calorie burn numbers are estimates based on average MET values. Individual metabolism, age, gender, and fitness level significantly affect actual burn. Consult a trainer or physician for personalized advice.

References

Calorie burn estimates and MET values are based on:

Compendium of Physical Activities. "Tracking Guide".
American Council on Exercise (ACE). "Physical Activity Calorie Counter".
Harvard Health Publishing. "Calories burned in 30 minutes for people of three different weights".

Frequently Asked Questions

Walking 30 minutes burns roughly 100 to 200 kcal depending on your weight and pace. A 60 kg person walking at moderate pace (5 km/h) burns about 120 kcal in 30 minutes. A 90 kg person at the same pace burns nearly 180 kcal. Brisk walking at 6.5 km/h adds another 30–50%. The MET formula helps: calories = MET × weight in kg × time in hours. Walking is around MET 3.5 at moderate pace, MET 5 at brisk. Inclines and stairs push it higher. Step counts alone overestimate — speed matters more than steps.

Calculator estimates are within 10 to 20% of true energy expenditure for most activities. They use METs and your weight, which is reasonable but ignores fitness level, terrain, temperature, and individual efficiency. Fit runners burn fewer calories at a given pace because their bodies are more economical. Heart rate-based estimates (chest strap, not wrist) are more accurate. Lab measurement using indirect calorimetry is the gold standard. For tracking weekly trends, calculator estimates are fine; for absolute calorie counting, treat the number as a guide and verify against weight changes over time.

At similar effort levels, running burns more calories per hour than cycling. Running at 10 km/h is about 10 METs; cycling at 16–19 km/h is around 6 METs. So a 70 kg person running for an hour burns about 700 kcal versus 420 kcal cycling at moderate pace. But cycling is easier on joints, so you can sustain it longer — a 2-hour bike ride beats a 1-hour run for total burn. Hard cycling (above 25 km/h) and hill climbing close the gap. Choose what you'll actually do consistently — that beats theoretical efficiency.

Heavier bodies burn more calories doing the same activity because moving more mass takes more energy. The MET formula multiplies weight directly: a 100 kg person burns about 40% more than a 70 kg person at the same activity. Walking at 5 km/h: 60 kg burns 240 kcal/hour, 90 kg burns 360 kcal/hour. This is one reason why early weight loss is faster — at higher weight, even normal activity burns more. As weight drops, calories burned at the same pace also drop, which is why exercise needs to scale up over time.

High-intensity activities top the list. Running fast (12 km/h) — 14 METs, around 1000 kcal/hour for a 70 kg adult. Vigorous cycling, swimming butterfly, jump rope, rowing hard, and HIIT circuits all hit 10–14 METs. Burpees and kettlebell swings done continuously are surprisingly high. Strength training is moderate at 4–6 METs but creates afterburn for 24–48 hours through EPOC. Walking and yoga are lower-intensity but sustainable. The best calorie-burning exercise is the one you can actually do for an hour without quitting — sustainability beats intensity.

Yes, this is EPOC — excess post-exercise oxygen consumption, sometimes called the afterburn effect. Heavy strength training and HIIT raise resting metabolism for 14 to 48 hours afterward. The total extra burn is modest — 50 to 200 kcal on top of the workout itself — but it accumulates. Steady cardio produces less EPOC. The bigger long-term benefit of strength training is muscle growth, which raises your daily BMR slightly. Don't expect huge afterburn numbers — fitness apps often exaggerate. The real value of lifting is what it does over months, not hours.