Maintenance Calorie Calculator

Find exactly how many calories you need per day to maintain your current weight — compared across two leading formulas for accuracy.

What Does This Tool Do?

Calculate maintenance calories — the exact daily calorie intake needed to maintain your current weight — using two formulas (Mifflin-St Jeor and Harris-Benedict) for comparison.

Key Features

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Two Formulas
Mifflin-St Jeor and revised Harris-Benedict.
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Average Shown
Average of both formulas for best estimate.
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Maintenance Focus
Specifically for weight maintenance, not loss or gain.
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Instant
Results immediately.

How to Use

  1. Enter age, sex, height and weight.
  2. Select your activity level.
  3. Click Calculate Maintenance Calories.

Frequently Asked Questions

What does maintenance calories mean?▾
Maintenance calories (TDEE) is the number of calories you need to eat each day to keep your current weight steady — not gain or lose.
Which formula is more accurate?▾
Mifflin-St Jeor is generally considered more accurate for most adults in modern research. Harris-Benedict (1919, revised 1984) tends to overestimate slightly. The average of both is a good practical estimate.
Why do the two formulas give different results?▾
They were developed in different eras using different study populations and methods. Real-world accuracy for individuals varies by ±10-15% regardless of formula.

Complete Guide to Maintenance Calorie Calculator

When To Use This Tool

Use Maintenance Calorie Calculator whenever you need fast, accurate output without installing software. This tool is designed for speed, clarity, and repeatable results for day-to-day work.

Best Practices for Accurate Results

  • Double-check the format of your input before running the tool.
  • Test with a small sample first, then process larger data.
  • Use Related Tools to verify, convert, or transform the output.

Why Users Prefer AdeDX

AdeDX tools are browser-based, free to use, and built to work across desktop and mobile devices. Most processing happens directly in your browser for fast performance and improved privacy.