Tool 24/54·Calculators
Find out how many extra calories you burn walking with a weighted pack — compared to walking without one.
Pack Weight
Rucking Speed
Terrain
Readout
Awaiting input
– – –
Enter your weight to start
Results update in real time as you adjust pack weight, speed, and terrain.
Computed in your browser · nothing stored
Rucking — walking with a weighted backpack — is one of the most effective low-impact exercises for calorie burn. Originally a military training staple, it has grown into a popular fitness method because it burns 2–3 times more calories than regular walking while remaining easy on joints.
How We Calculate It
This calculator uses MET values adjusted for load carriage based on the Pandolf equation (1977). Energy cost increases roughly in proportion to the ratio of pack weight to body weight: METruck = METbase × (1 + pack weight / body weight). Terrain adds a multiplier for elevation and surface difficulty.
A 180 lb person carrying a 30 lb pack at a moderate pace burns roughly 400 calories per hour — significantly more than walking alone. Because rucking is low-impact, you can do it daily without the joint stress of running. Combined with mindful eating tracked through an app like Caloria, rucking creates a sustainable calorie deficit.
01
Rucking burns significantly more calories than regular walking. A 180 lb person carrying a 30 lb pack at a moderate pace burns roughly 350–450 calories per hour, compared to about 250 calories per hour walking without weight. The exact number depends on body weight, pack weight, speed, and terrain.
02
Start with 10–15% of your body weight and gradually increase. Most fitness ruckers carry 20–45 lbs (9–20 kg). Military standard is around 45–60 lbs. Going too heavy too soon can lead to injury, especially in the knees and lower back. Listen to your body and progress slowly.
03
Per minute, running burns more calories than rucking. However, rucking is much lower-impact, allowing longer sessions and more frequent training. A 60-minute ruck can burn comparable total calories to a 30–40-minute run, with significantly less joint stress. Rucking also builds functional strength in ways running doesn't.
04
Yes — faster rucking burns significantly more calories per minute. However, the relationship between speed and calorie burn is steeper with a heavy pack than without one. Increasing from 2 mph to 4 mph with a 30 lb pack can nearly triple your calorie burn per hour.
05
This calculator uses MET values adjusted for load carriage based on the Pandolf equation. The energy cost of walking increases roughly proportionally to the ratio of pack weight to body weight. Terrain adds a percentage multiplier based on the additional effort for elevation and surface.
06
Yes, 100% free with no sign-up required. Calculate as many times as you like — adjust body weight, pack weight, speed, and terrain to compare different rucking scenarios.