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Fitness & Health

Calorie Calculator

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

Inputs

Results update as you edit.

in
lb

Daily calorie target

2,677 kcal

Results update as the calculator inputs change.

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

How to Estimate Daily Calories

BMR
Basal metabolic rate estimates calories used at rest.
Activity Level
Activity multipliers estimate total daily energy expenditure from BMR.
Goal Adjustment
Calories are adjusted up or down depending on weight-loss, maintenance, or gain goals.

How to Use a Calorie Estimate

Calorie calculators estimate energy needs from body size, age, sex, and activity level. They are starting points; real maintenance can differ because daily movement, training, metabolism, and tracking accuracy vary.

What Affects Calorie Needs?

Age and Sex

BMR formulas use age and sex because average energy needs differ.

Height and Weight

Body size is a major driver of estimated energy use.

Activity Level

Exercise and daily movement can raise total energy needs substantially.

Goal Rate

A larger calorie deficit or surplus changes the speed and sustainability of progress.

Adaptation

Energy needs can change as weight, training, and habits change.

Health Context

Medical conditions, pregnancy, and medications can affect calorie needs.

Common Calorie Planning Steps

Maintenance Estimate

Start with estimated calories needed to maintain weight.

Deficit Planning

Subtract calories for gradual weight loss when appropriate.

Surplus Planning

Add calories for weight gain or muscle-building phases.

Frequently Asked Questions

What is maintenance calories?

Maintenance calories are the estimated daily calories needed to keep weight roughly stable.

How accurate is a calorie calculator?

It is an estimate. Track body weight trends and adjust intake based on real results over several weeks.

What activity level should I choose?

Choose the level that best matches both exercise and daily movement, not just workouts.

Is a bigger deficit better?

Not always. Very aggressive deficits can be hard to sustain and may not fit health or performance goals.

Is this medical advice?

No. It is a planning estimate. Ask a qualified professional for personal nutrition or medical guidance.