How accurate is a steps-to-calories calculator?

Most public step counters estimate calories within 10-20% of actual energy expenditure for flat-ground walking. The bigger source of error is usually pace estimation, not stride or step count. For people with consistent walking routines, day-to-day comparisons are reliable even if the absolute number is off.

Why does pace matter for calorie burn?

Pace changes both the metabolic intensity (MET) and the time it takes to cover the steps. A faster walker uses more energy per minute but finishes the same step count faster. The result is a calorie-per-step rate that is higher at fast pace.

How many calories does 10,000 steps burn?

Roughly 350-450 calories for an average adult walking at 3 mph, depending on weight and height. Faster pace with longer stride pushes it higher. The calculator gives you an exact number for your inputs.

Does this work for running, not just walking?

It is calibrated for walking (MET values are walking-specific). Running changes stride length, foot strike, and MET substantially. The result will be a rough under-estimate for runs. Use a running-specific calculator for accurate run calorie estimates.