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Fitness & Health

Calorie Calculator

Estimate maintenance calories and goal calories using BMR and activity level.

Calculator.net reference
Inputs
Defaults are prefilled so the result is visible immediately.
in
lb
Results
Results update as the calculator inputs change.

Daily calorie target

2,677 kcal

Do not use calorie estimates as medical advice or for treatment of disordered eating.

Maintenance calories

2,677 kcal

BMR

1,727 kcal

Weekly target

18,742 kcal

Formula and Assumptions
Mifflin-St Jeor BMR x activity factor, then adjusted by the selected goal.

The 500 kcal adjustment is a rough one-pound-per-week energy target.

Reassess after real weight trends because calculators cannot know metabolic adaptation.

Reference Upgrade
Built from the Calculator.net model, with added context.

Live validation and instant result updates instead of a submit-only workflow.

Multiple decision metrics are shown together, not only the primary answer.

Formula notes and assumptions are visible on the page so the math is easier to audit.

Reference Model

Modeled after the input style and primary output on Calculator.net's Calorie Calculator.

The page keeps the math in one place and exposes the assumptions beside the result.

Default inputs: age=32, sex=male, heightInches=70, weight=170, activity=1.55, goal=maintain