Walking Calorie & kJ Calculator
Calculate how many kilojoules or calories you burn walking, based on your body weight, speed, duration, incline, and surface type. This Australian calculator uses MET values from the Compendium of Physical Activities and shows results in both kJ and kcal.
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Enter your details
Energy Burned Walking
ExampleExample figures, not your own. Worked for 45 minutes of walking at 4.8 km/h on flat pavement at 75 kg. Enter your own details and press Calculate.
Kilojoules Burned
824kJ
Distance Covered
3.6km
Estimated Steps
5,103
Effective MET
3.5
Metabolic Equivalent of Task
How It Works
Walking energy is calculated using MET values that vary by speed, gradient, and surface. Flat-ground METs range from 2.8 (slow stroll at 3.2 km/h) to 5.0 (power walk at 6.4 km/h). Uphill walking increases the MET by 30-105%, and soft surfaces like sand add roughly 50% more effort. The formula: Energy (kJ) = MET x weight (kg) x hours x 4.184.
How to use it
- 1Enter your body weight in kilograms
- 2Select your walking speed
- 3Enter the walking duration in minutes
- 4Choose an incline (flat, uphill, or downhill)
- 5Select the surface type (pavement, grass, gravel, or sand)
- 6Click "Calculate" to see kilojoules, calories, distance, and estimated steps
Quick Reference
| Duration | kJ Burned | Calories Burned |
|---|---|---|
| 10 min | 219 | 52 |
| 15 min | 329 | 79 |
| 20 min | 439 | 105 |
| 30 min | 658 | 157 |
| 45 min | 987 | 236 |
| 60 min | 1,317 | 315 |
| 90 min | 1,975 | 472 |
Based on 75 kg at moderate pace (4.8 km/h, MET 3.5) on flat ground.
How This Is Calculated
- MET
- = Metabolic Equivalent of Task (2.8-5.0 for walking, adjusted for gradient and surface)
- weight
- = body weight in kilograms
- duration
- = exercise time in hours
Flat-ground MET values: 3.2 km/h = 2.8, 4.0 km/h = 3.0, 4.8 km/h = 3.5, 5.6 km/h = 4.3, 6.4 km/h = 5.0. Uphill grades increase the MET by 30-105%. Sand increases MET by ~50%. From the Compendium of Physical Activities.
kJ Burned Walking for 30 Minutes (by Weight and Speed)
This table shows the kilojoules burned during a 30-minute walk on flat ground at different body weights and walking speeds. Heavier individuals burn more energy because it takes more effort to move a larger body mass.
| Weight | 3.2 km/h | 4 km/h | 4.8 km/h | 5.6 km/h | 6.4 km/h |
|---|---|---|---|---|---|
| 55 kg | 322 kJ | 345 kJ | 403 kJ | 495 kJ | 575 kJ |
| 65 kg | 381 kJ | 408 kJ | 476 kJ | 585 kJ | 680 kJ |
| 75 kg | 439 kJ | 471 kJ | 549 kJ | 675 kJ | 785 kJ |
| 85 kg | 498 kJ | 533 kJ | 622 kJ | 765 kJ | 889 kJ |
| 95 kg | 556 kJ | 596 kJ | 696 kJ | 855 kJ | 994 kJ |
| 105 kg | 615 kJ | 659 kJ | 769 kJ | 945 kJ | 1,098 kJ |
Flat ground, pavement surface. Multiply by 1.3-2.0 for uphill walking.
Calories and kJ Burned per Kilometre Walking
A common rule of thumb is approximately 1 kcal per kg of body weight per kilometre walked. The table below shows more precise values calculated using MET values at moderate pace (4.8 km/h). Walking faster burns slightly more energy per kilometre because your muscles work harder, even though you cover the distance sooner.
| Weight | kJ per km | kcal per km |
|---|---|---|
| 55 kg | 168 kJ | 40 kcal |
| 65 kg | 198 kJ | 47 kcal |
| 75 kg | 229 kJ | 55 kcal |
| 85 kg | 259 kJ | 62 kcal |
| 95 kg | 290 kJ | 69 kcal |
| 105 kg | 320 kJ | 76 kcal |
Based on moderate pace (4.8 km/h, MET 3.5) on flat pavement.
How Many Kilojoules Does Walking Burn?
Walking burns between 400 and 1,400 kJ per 30 minutes depending on your weight, speed, and terrain. A 70 kg person walking at a moderate pace of 4.8 km/h on flat ground burns approximately 615 kJ (147 kcal) in 30 minutes. At a brisk pace of 5.6 km/h, that increases to around 755 kJ (180 kcal).
For a heavier person (95 kg), the same 30-minute moderate walk burns roughly 835 kJ (200 kcal), while a lighter person (55 kg) burns about 485 kJ (116 kcal). Body weight is the single biggest factor in how many kilojoules you burn walking.
Walking uphill dramatically increases energy expenditure. A 5% incline adds roughly 50% more kJ burned compared to flat ground at the same speed. Walking on sand also increases the effort by around 50% compared to pavement.
How Many Calories Does Walking 10,000 Steps Burn?
Walking 10,000 steps covers roughly 7-8 km depending on your stride length. For a 70 kg person at moderate pace, 10,000 steps burns approximately 1,400-1,650 kJ (335-395 kcal). For a 90 kg person, the same 10,000 steps burns around 1,800-2,100 kJ (430-500 kcal).
The exact number depends on walking speed, terrain, and individual biomechanics. Faster walking increases the energy cost per step, and uphill or uneven surfaces add significantly more effort. However, even a slow 10,000-step walk provides meaningful energy expenditure for weight management.
Walking for Weight Loss: How Much Is Enough?
Walking is one of the most effective and sustainable forms of exercise for weight management. The Australian Department of Health recommends at least 150 minutes of moderate-intensity physical activity per week, which translates to roughly 30 minutes of brisk walking five days a week.
For a 75 kg person, five 30-minute brisk walks per week burns approximately 3,760 kJ (900 kcal). Over a month, that adds up to about 15,040 kJ, which equates to roughly half a kilogram of body fat. Combined with a modest dietary adjustment of 1,000-2,000 kJ per day, this creates a sustainable rate of weight loss of 0.5-1 kg per week.
Consistency matters more than intensity. A daily 30-minute walk you maintain for a year will deliver far better results than intense exercise you abandon after a few weeks. Walking is low-impact, requires no equipment, and can be built into daily routines through commuting, lunchtime walks, or evening strolls.
Does Walking Speed Affect Calories Burned?
Yes. Walking speed has a direct impact on energy expenditure. At 3.2 km/h (a slow stroll), the MET value is 2.8. At 5.6 km/h (brisk walking), it rises to 4.3 - a 54% increase in energy cost per minute. At 6.4 km/h (power walking), the MET reaches 5.0, nearly double the energy cost of a slow stroll.
The difference adds up quickly. A 75 kg person walking for 30 minutes burns 440 kJ at a slow pace versus 676 kJ at a brisk pace. Over a week of daily walks, that is an extra 1,650 kJ - the equivalent of a small meal.