Body & Nutrition
OpenCalorie Calculator
Resting energy from a published equation, with its uncertainty shown beside the figure.
Instrument
These planning tools and Ascendant coaching services are intended for adults aged 18 and over.
Ascendant tools are educational planning instruments for adults. They do not diagnose, prescribe or replace licensed medical care.
How it will work
A published prediction equation produces a range rather than a single number, and the equation's own error margin is drawn beside it so the width of the estimate is visible before anything is planned around it.
What this tool will do
- Name the equation used and the population it was derived from
- Present resting energy as a band with a stated error margin
- Explain why two people with the same inputs can differ
What this tool will not do
- Display a metabolic age or any invented score
- Present a single calorie figure as a fact about one body
- Replace measured indirect calorimetry
Evidence and review status
- Stage
- Open
- Working logic
- Implemented
- Sources last checked
- 2026-08-27
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Every tool runs inside your browser session. Nothing entered is stored, placed in a link or sent anywhere.