Should I eat below my BMR to lose weight?

Generally, no. Eating below your BMR can slow down your metabolism and cause muscle loss. Aim to eat at your BMR and create a deficit through activity, or only go slightly below.

Is this accurate for athletes?

BMR formulas are based on average body composition. If you are very muscular (e.g., bodybuilder), this calculator might underestimate your needs because muscle burns more calories than fat.

BMR Calculator

Estimate basal metabolic rate with trusted clinical equations, see the hourly burn that powers daily living, and export the insights into your nutrition, training, or financial wellness plans.

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