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Adult Maintenance Energy Estimate — result sheet
Estimate daily maintenance energy expenditure using the sex-specific Mifflin-St Jeor resting-energy equation and a clearly labeled heuristic activity multiplier, without prescribing calorie intake.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: Resting kcal/day = 10 x weight (kg) + 6.25 x height (cm) - 5 x age + s, where s = +5 for the male coefficient or -161 for the female coefficient. Maintenance estimate = resting energy x activity multiplier.
The published Mifflin-St Jeor equation estimates resting energy expenditure; multiplying by a heuristic activity factor gives a rough total-day expenditure scenario. The two sex coefficients differ by 166 kcal/day at rest. Neither result is a measured energy need, calorie target, or weight-loss prescription.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- Age — years; Limited to ages 19-78, matching the original study's age range.; minimum 19; maximum 78
- Sex coefficient in the published equation — The original study used male and female coefficients; these do not capture every individual's physiology.; 2 choices
- Weight — kg; minimum 25; maximum 350
- Height — cm; minimum 120; maximum 230
- Heuristic activity multiplier — Rough planning factors, not measured activity or coefficients from the Mifflin study.; 5 choices
Worked example
| Input | Value |
|---|---|
| Age | 32 |
| Sex coefficient in the published equation | female |
| Weight | 76 |
| Height | 178 |
| Heuristic activity multiplier | 1.55 |
Estimated maintenance expenditure: 2404.83 kcal/day; estimated resting expenditure: 1551.50 kcal/day.
Assumptions and limits
- For adults age 19-78 only, matching the original research age range; not for pregnancy, breastfeeding, children, or clinical nutrition decisions.
- The sex-specific coefficients come from the original study; the activity multipliers are separate, approximate planning assumptions and individual error may be substantial.
- Weight and height are in kilograms and centimeters. No calorie deficit, macronutrient allocation, treatment recommendation, or diagnostic conclusion is provided.
Calculator note
Source and methodology
Use the official WorldCalculate methodology policy for the source, formula, precision, and boundary standards behind this calculator.
Planning estimate, not financial, medical, legal, or professional advice. © WorldCalculate — reuse with attribution. Built and curated by Hassan ALRowaie.
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