TDEE Calculator: Calories & Macros for Your Goal

Calculate BMR (Mifflin, Harris-Benedict, Katch-McArdle) and TDEE, set a pace in kg or lb per week, and get a macro plan with per-meal targets, water, fiber and a 26-week projection to your goal weight.

Built and maintained by Shehzad Munir ·

For general information only, not medical advice. These figures are population-level estimates; talk to a doctor or registered dietitian about your own health.

TDEE & Macro Calculator
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<a href="https://www.toolnova.org/utilities/tdee-calorie-macro-calculator">TDEE &amp; Macro Calculator</a> by ToolNova

APA

ToolNova. (2026, October 5). TDEE & Macro Calculator [Online tool]. https://www.toolnova.org/utilities/tdee-calorie-macro-calculator

MLA

“TDEE & Macro Calculator.” ToolNova, 5 Oct. 2026, www.toolnova.org/utilities/tdee-calorie-macro-calculator.

What TDEE actually is

Enter your body stats and activity to see the calories you burn each day, then choose how fast you want to lose or gain. You get daily calories with safety floors, protein, carbs and fat from six diet presets or your own split, a per-meal breakdown and the date you are likely to reach your goal.

Total Daily Energy Expenditure is the calories you burn in a day, your resting metabolism plus activity. It's the anchor for any nutrition plan: eat below it to lose weight, at it to maintain, above it to gain. Guessing this number is why many diets stall.

Features

  • 3 BMR formulas incl. Katch-McArdle with body-fat %
  • 6 activity levels with multipliers shown
  • Pace slider in kg or lb per week, with safety warnings
  • Macro presets: balanced, high protein, low carb, keto, endurance
  • Protein by g/kg or custom % split
  • Per-meal macros for 1-8 meals, water and fiber
  • Adaptive 26-week projection with goal date

How to use TDEE & Macro Calculator

  1. 1

    Enter your body

    Add sex, age, height, weight and optional body fat.

  2. 2

    Choose activity

    Pick the level that matches a typical week.

  3. 3

    Set your goal

    Drag the pace slider and enter a goal weight.

  4. 4

    Plan your macros

    Pick a diet preset or set protein per kg, then split by meals.

Common use cases

  • Finding maintenance calories before starting a diet
  • Setting a calorie deficit for weight loss with a realistic weekly rate
  • Planning a lean-bulk surplus for muscle gain
  • Getting protein/carb/fat targets for meal planning
  • Dialing in keto or low-carb macros
  • Estimating a daily water intake target

Detailed guide

Why Mifflin-St Jeor

This calculator uses the Mifflin-St Jeor equation, widely regarded as one of the most accurate formulas for estimating resting metabolic rate in the general population. Multiplying it by an activity factor produces a realistic TDEE rather than a wild guess.

Macros, not just calories

Two diets with the same calories can feel and perform very differently depending on protein, carb, and fat split. Adequate protein preserves muscle in a deficit and aids satiety, which is why the tool breaks your target into grams rather than just a calorie number.

Frequently asked questions

How many calories should I eat to lose 0.5 kg a week?

About 550 kcal a day below your TDEE, since 0.5 kg of fat holds roughly 3,850 kcal. The calculator sets this for you and won't go below 1,200 (women) or 1,500 (men) kcal.

Why does the weight projection curve?

As you lose weight your maintenance calories fall, so the same intake causes slower loss. The projection recalculates TDEE every week.

How much protein do I need?

1.6-2.2 g per kg of body weight helps keep muscle during a cut. Choose the g/kg macro mode to set it directly.

What is TDEE and how is it calculated?

TDEE (Total Daily Energy Expenditure) is the total number of calories you burn in a day. It is calculated by first finding your BMR (Basal Metabolic Rate) using the Mifflin-St Jeor equation, then multiplying it by an activity factor (1.2 for sedentary up to 1.9 for very active). This calculator does that automatically.

How many calories should I eat to lose weight?

To lose fat, eat below your TDEE. A moderate deficit of 15-25% (roughly 300-700 calories/day) supports steady loss of about 0.5-1kg per week while preserving muscle. Select the 'Cut' goal to see your target automatically.

How should I split my macros?

A common evidence-based starting point is 1.6-2.2g of protein per kg of body weight, 20-30% of calories from fat, and the remainder from carbs. This tool sets protein based on your weight and goal, then fills fat and carbs to hit your calorie target.

Is my health data stored anywhere?

No. Every calculation runs entirely in your browser. Your weight, height, age, and results are never uploaded, logged, or shared.

How is my TDEE and daily calorie target calculated?

The tool first estimates your BMR (resting calories) from your age, sex, height and weight, then multiplies by an activity factor to get TDEE, the calories you burn per day. It then offsets that for your goal: a deficit to lose weight, a surplus to gain.

How do I split my calories into protein, carbs and fat?

Macros are set as percentages of your calorie target, then converted to grams using 4 kcal per gram of protein and carbs and 9 kcal per gram of fat. The calculator shows grams per day for cutting, maintenance or bulking.

Sources

The figures and rules on this page are based on these primary sources:

From the journal

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