Calories Burned Calculator

MET values range from 1.0 (sleeping) to 18+ (sprinting uphill). Walking at a moderate 3 mph pace rates 3.5 METs, while brisk walking at 4 mph jumps to 5.0 METs. Jogging at 5 mph is 8.3 METs, and running at 8 mph reaches 11.8 METs. Cycling at 12-14 mph rates 8.0 METs, swimming laps at a moderate pace is 7.0 METs, and high-intensity interval training (HIIT) averages 8-12 METs depending on the specific protocol. Resistance training ranges from 3.5 METs for light effort to 6.0 METs for vigorous circuit training. Yoga is typically 2.5-4.0 METs depending on style — gentle hatha yoga is about 2.5 METs while power vinyasa approaches 4.0 METs. For a 70 kg (154 lb) person, one hour of running at 6 mph (9.8 METs) burns approximately 686 calories, while one hour of walking at 3 mph (3.5 METs) burns about 245 calories. These differences illustrate why higher-intensity activities are more time-efficient for calorie burning.

Body weight has a direct, linear relationship with calories burned during weight-bearing activities. The formula Calories = MET × weight (kg) × time (hours) means a 90 kg person burns roughly 50% more calories than a 60 kg person doing the identical workout at the same intensity and duration. This is because heavier individuals must move more mass against gravity, requiring more muscular work and oxygen consumption. For a 60 kg person, 30 minutes of running at 6 mph burns about 294 calories; for a 90 kg person, the same run burns 441 calories. This principle explains why heavier individuals often see faster initial weight loss when starting an exercise program. However, as you lose weight, the same workout burns fewer calories — a phenomenon that contributes to weight loss plateaus. To maintain the same calorie burn as you get lighter, you must increase either intensity (higher MET) or duration. Non-weight-bearing activities like cycling and swimming show a somewhat smaller weight effect because the body is supported.

The most widespread error is trusting calorie counts displayed on cardio machines. Studies from the Stanford University School of Medicine found that elliptical trainers overestimate calorie burn by an average of 42%, and stationary bikes by about 7%. Treadmills are the most accurate but still overestimate by 13% on average because they do not account for individual biomechanical efficiency. Fitness trackers and smartwatches also have significant error margins — a Stanford study showed wrist-worn devices can be off by 27-93% depending on the activity type. Another common mistake is assuming all minutes of exercise are equal: a 30-minute run with warm-up and cool-down phases averages a lower MET than 30 minutes at a sustained race pace. People also frequently underestimate rest time during weightlifting sessions — actual lifting may account for only 15-20 minutes of a 45-minute gym session. For the most accurate tracking, use MET-based calculations with honest assessments of actual working time and intensity, and remember that the afterburn effect (EPOC) adds only 6-15% to total calorie expenditure for most workouts.

A MET (Metabolic Equivalent of Task) measures how hard an activity works your body compared with sitting still — one MET equals resting energy use, about 3.5 milliliters of oxygen per kilogram of body weight per minute, or roughly 1 calorie per kilogram per hour.

The calculator applies a single timeless formula: Calories = MET × weight (kg) × time (hours). A 10 MET activity burns ten times the energy of rest.

MET values are standardized in the Compendium of Physical Activities, a research reference cited by the CDC and the American College of Sports Medicine (ACSM).

Because the relationship is linear, doubling either your duration or your body mass doubles the calories burned — which is why heavier people burn more doing the identical workout.

To estimate your calories burned, enter three values — your activity, your body weight in kilograms, and the workout duration in minutes — and the calculator returns total calories plus per-minute and per-hour rates.

Follow these steps:

• Select your activity from the 25+ options, each labeled with its MET value.
• Enter your weight in kilograms (or use the pound field, which auto-converts).
• Enter how many minutes you actually exercised, not total time at the gym.
• Read the total, plus calories per minute and per hour.

Worked example: a 70 kg person running at 6 mph (9.8 MET) for 30 minutes burns 9.8 × 70 × 0.5 = 343 calories. An 80 kg person doing the identical run burns about 392 calories, because more body mass requires more energy to move the same distance.

A 70 kg (154 lb) adult burns roughly 4-5 calories per minute walking briskly, 10-13 running, and 6-10 cycling, with the exact figure rising as body weight and intensity increase.

Typical rates for a 70 kg person:

• Brisk walking (4 mph, 4.3 MET): about 5 calories per minute.
• Jogging (5 mph, 8.3 MET): about 10 calories per minute.
• Running (7 mph, 11.5 MET): about 13 calories per minute.
• Moderate cycling (12-14 mph, 6.8 MET): about 8 calories per minute.

The CDC classifies activities in the 3-6 MET range as moderate and those above 6 METs as vigorous. Vigorous work reaches a calorie target faster, which is why the American Heart Association lets one vigorous minute count as two moderate minutes toward weekly activity goals.

Losing one pound of body fat requires an energy deficit of roughly 3,500 calories — a widely used approximation rather than an exact law, since metabolism adapts as you lose weight.

To lose about one pound per week, aim for a deficit near 500 calories per day, split between eating less and moving more.

Key points:

• Exercise alone rarely creates the whole deficit — a 30-minute run burns only about 300 calories.
• The CDC and NIH recommend combining modest calorie reduction with regular activity for sustainable loss.
• Very aggressive deficits risk muscle loss and metabolic slowdown.

Treat calculator estimates as planning tools, and confirm progress by tracking your weight trend over several weeks rather than reading any single workout's number as gospel.

MET-based calorie estimates are accurate within about ±10-15% for most healthy adults, because they rely on population-average energy costs rather than your individual physiology.

The Compendium of Physical Activities lists average METs measured across many people, so results do not capture your fitness level, movement efficiency, age, or body composition.

Sources of variation include:

• Fitness: trained athletes may burn slightly fewer calories performing a task efficiently.
• Body composition: more muscle mass raises both resting and working expenditure.
• Terrain, temperature, and technique.

The American College of Sports Medicine (ACSM) endorses MET values for population and program planning. Indirect calorimetry in a lab remains the gold standard for precision, while this calculator is best used to compare workouts and track trends over time.

Heart rate monitors can personalize calorie estimates better than MET tables for steady aerobic exercise, but both methods carry meaningful error. MET values ignore your individual response, while heart-rate formulas assume a fixed link between pulse and oxygen use that shifts with fitness, caffeine, heat, and stress.

Consider the trade-offs:

• MET calculators are simple, consistent, and ideal for comparing activities.
• Chest-strap monitors are more accurate than wrist optical sensors.
• Neither reliably counts calories during weightlifting, where heart rate rises without a high oxygen cost.

Research from Stanford Medicine has shown consumer wrist trackers can misestimate energy expenditure by 27% or more. Use heart rate for personalized cardio trends and MET values for planning, and treat every number as an estimate, not a precise measurement.

Federal guidelines recommend at least 150 minutes of moderate-intensity aerobic activity per week, or 75 minutes of vigorous activity, plus muscle-strengthening on two or more days. These targets come from the U.S. Department of Health and Human Services Physical Activity Guidelines for Americans and are echoed by the CDC and the World Health Organization (WHO).

In calorie terms, 150 weekly moderate minutes for a 70 kg adult burns roughly 1,000-1,500 calories, depending on the activities chosen.

Practical ways to hit the target:

• Spread activity across most days rather than one long session.
• Mix cardio with strength training for metabolic and heart benefits.
• Count vigorous minutes double toward the goal.

More activity yields additional benefits, according to the CDC, but even small amounts reduce cardiovascular risk.

The biggest mistake in using calorie-burn numbers is "eating back" every estimated calorie, which erases your deficit because most estimates run high. Rewarding a 300-calorie run with a 300-calorie snack often stalls weight loss entirely.

Avoid these errors:

• Eating back all exercise calories from an optimistic estimate.
• Ignoring NEAT — everyday non-exercise movement often burns more than a workout, per NIH research.
• Counting total gym time instead of actual working minutes.
• Expecting exercise to outrun a poor diet; the CDC stresses that nutrition drives most weight change.

Use MET estimates conservatively, prioritize consistent eating habits, and judge progress by multi-week weight trends rather than any single workout's calorie readout.