Walking Calorie Calculator
A 155 lb person walking for 30 minutes at 3 mph burns about 129 calories. This walking calorie calculator estimates the calories you burn from your weight, walking speed, and time on your feet. It uses MET values from the Compendium of Physical Activities, the same reference researchers use, so a brisk 4.5 mph walk scores exactly twice the burn rate of a slow 2.5 mph stroll.
Quick answer
Calories burned depend on three things, your body weight, your walking speed, and how long you walk.
Calories burned
129 calories
Calories per hour
258
Distance (miles)
1.5
MET value
3.5
What this tells you
- •Calories burned depend on three things, your body weight, your walking speed, and how long you walk.
- •Each speed has a MET value, a multiple of resting energy use. Walking at 3 mph is 3.5 METs, meaning 3.5 times the calories you burn sitting still.
- •The formula is calories per minute = MET x 3.5 x weight in kg / 200.
- •Heavier people burn more calories at the same speed because moving more mass takes more energy.
How to Use
- 1Enter your body weight and pick pounds or kilograms.
- 2Enter how many minutes you walked or plan to walk.
- 3Choose your walking speed. If you are not sure, 3 mph is a typical comfortable pace.
- 4Read the total calories burned, plus the hourly burn rate and estimated distance.
How It Works
Formula
calories per minute = MET x 3.5 x weight (kg) / 200MET stands for metabolic equivalent of task. Sitting quietly is 1 MET, and each walking speed has a measured MET value, from 2.8 at 2 mph up to 7.0 at 4.5 mph. Multiply the MET by 3.5, then by your weight in kilograms, and divide by 200 to get calories per minute. Multiply by your walking time for the total. For example, a 70 kg person at 3.5 METs burns 4.3 calories a minute, so a 30 minute walk burns about 129 calories.
Calculation note: values are processed in the order shown above, using the current input units.
Worked Examples
30 minute walk at 3 mph, 155 lb person
155 lb is 70.3 kg. At 3.5 METs, that is 4.3 calories a minute, times 30 minutes.
1 hour brisk walk at 4 mph, 180 lb person
180 lb is 81.6 kg. At 5.0 METs, the burn rate is about 7.1 calories a minute for 60 minutes.
45 minute stroll at 2.5 mph, 70 kg person
At 3.0 METs, a 70 kg person burns about 3.7 calories a minute, times 45 minutes.
Calories Burned Walking 30 Minutes by Speed
Estimated calories for a 155 lb (70.3 kg) person walking 30 minutes.
| Speed | MET | Calories in 30 min |
|---|---|---|
| 2.0 mph (slow) | 2.8 | 103 |
| 2.5 mph (easy) | 3.0 | 111 |
| 3.0 mph (moderate) | 3.5 | 129 |
| 3.5 mph (brisk) | 4.3 | 159 |
| 4.0 mph (fast) | 5.0 | 185 |
| 4.5 mph (very fast) | 7.0 | 258 |
What a MET calorie estimate means
A MET is a standard activity intensity relative to a reference resting energy cost. This tool assigns one MET value to each listed level-ground speed. It then uses the common equation MET times 3.5 times body weight in kilograms divided by 200. That produces estimated kilocalories per minute, which everyday labels call calories.
The estimate uses total activity energy under the conventional MET equation. It is not a direct measurement from your body. Resting metabolism differs between people, and the fixed 3.5 milliliters of oxygen per kilogram per minute reference does not match everyone. A laboratory test with respiratory gas analysis can measure energy use more directly, but it still reflects the tested conditions.
Speed is treated as constant for the full number of minutes. The distance output is speed times time, so 30 minutes at 3 mph becomes 1.5 miles. Stops, warm-up, cooldown, traffic lights, indoor turns, and pace changes are not separated. If you know moving time and average moving speed, those values fit the model better than total outing time.
Terrain and technique change effort. Hills, stairs, sand, snow, trails, wind, pushing a stroller, carrying a load, or using walking poles may raise energy cost. A treadmill grade can do the same. Holding the rails can lower the work performed. The speed-only menu cannot represent any of those details, and a flat percentage adjustment would not fit every route.
Personal results vary with movement efficiency, fitness, age, body composition, mobility, gait, temperature, altitude, and health. Two people with the same scale weight may use different amounts of energy at one pace. Fitness devices use their own sensor data and algorithms, so disagreement with this page does not prove either estimate is exact.
Exercise calories are easy to overinterpret in weight planning. Food labels, portion estimates, resting needs, and activity estimates all contain uncertainty. Avoid treating one walking result as a precise calorie credit. Longer-term body-weight changes depend on overall intake, total activity, sleep, medication, health, and other factors that this calculator does not assess.
Choose a pace and duration that fit your current ability and surroundings. Slow down or stop for chest pain, faintness, severe shortness of breath, confusion, or other concerning symptoms. Seek urgent medical help when symptoms may be an emergency. A calorie estimate cannot determine whether exercise is safe for an individual.
Common mistakes
- Using minutes of clock time instead of actual walking time. Stops at crossings or window shopping do not burn walking calories.
- Assuming distance alone sets the burn. Two people covering 2 miles burn different amounts if their weights differ.
- Comparing against fitness tracker numbers as if both were exact. Trackers estimate too, and wrist-based estimates often run high.
- Counting the displayed calories as extra food allowance without considering what the estimate includes.
- Picking treadmill belt speed when stops or uneven outdoor terrain made the average pace different.
- Assuming a MET category describes effort equally for every fitness level or health condition.
Limitations
This calculator uses fixed MET values for six listed speeds from 2.0 through 4.5 mph, constant pace, firm level ground, and the standard 3.5 mL/kg/min reference. It does not model grade, stairs, surface, wind, load, poles, rail support, stops, temperature, altitude, gait, mobility aids, age, sex, fitness, body composition, medication, pregnancy, or health conditions. Calories and hourly calories round to whole numbers. Distance comes from selected speed times time rather than GPS. The result is an activity estimate, not a laboratory measurement, dietary prescription, fitness assessment, or medical evaluation.
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