2 tools
A free rucking calorie calculator that estimates the energy cost of walking with a loaded pack using the Pandolf load-carriage equation with Drain et al.'s modern correction factor — the same math used by US Army planners. Enter your bodyweight, pack weight, pace, grade, and terrain factor; the tool returns watts and kcal/min, plus a MET-only comparison so you can see how much extra burn the load actually adds. Every formula and assumption is shown on the page, and the underlying engine is the same one powering the CalBurndown mobile app.
A free weighted-vest walking calculator that estimates calorie burn using the Pandolf load-carriage equation with Drain et al.'s modern correction factor. Vest walking sits between unloaded walking and full rucking: the load is distributed across the torso instead of hanging off the shoulders, but the energy cost still scales with weight, pace, and grade. Enter your bodyweight, vest weight, pace, grade, and terrain; the tool returns watts and kcal/min, plus a MET-only comparison. Same engine as the CalBurndown app.
