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Macro Calculator

Grams of protein, carbs and fat for your calorie goal.

Works in your browser. Nothing you type is sent to us.

Calories a day–
–BMR, at rest
–Maintenance (TDEE)
GoalCalories a day

Macros for your goal

Macro Calculator at a glance

Price
Free
Data sent to us
None, it runs in your browser
Sign-up
Not needed
Formula
Mifflin-St Jeor
Gives
BMR, TDEE, goal calories, macros
Units
US or metric

How to use Macro Calculator

Takes about 1 minute. You need your age, height and weight.

  1. Type your detailsChoose sex, and type age, height and weight in US or metric units.
  2. Pick activity and goalChoose how active you are and whether to lose, keep or gain weight.
  3. Read your caloriesSee calories a day for the goal, your BMR and maintenance, and macros in grams.
Calorie Calculator: Calories a day for your goal, with BMR, maintenance calories and macros.

The macro split is set to higher protein: 30% of calories from protein, 40% from carbohydrates and 30% from fat. Type your details and goal, and the grams of each appear under the result. Protein and carbs have 4 calories a gram and fat 9.

How it works

Macro Calculator is a web page that does its work on your own device. Everything you type or choose is worked out by your browser and never sent to a server, so nothing is stored and there is nothing to delete. There is no account, no sign-up and no limit on how often you use it.

Hitting your macros

Protein is the one most people fall short on. Spread it over three or four meals; the fat and carb numbers matter less day to day than the calorie total.

Other shortcuts

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