How it works
TDEE calculadora — the short version
We built TDEE calculadora because the other tools for this job either cost a subscription or came with a consent banner the size of a small novel.
These numbers are guidance, not a prescription — your plate still matters more than the tracker. Think of an average week rather than today — then work out the numbers and the rest of this page explains what the answer means.
Use 1.2 for sedentary, 1.375 for light exercise 1–3×/week, 1.55 for moderate 3–5×/week, 1.725 for hard 6–7×/week, 1.9 for very hard + physical job.
The formula we run is TDEE = BMR × activity factor. You'll see each term laid out in the worked example below.
A worked example, step by step
Consider a realistic scenario and follow it through:
Use 1.2 for sedentary, 1.375 for light exercise 1–3×/week, 1.55 for moderate 3–5×/week, 1.725 for hard 6–7×/week, 1.9 for very hard + physical job.
Every run comes back to TDEE = BMR × activity factor — change the inputs, the structure of the answer stays.
Moments this tool earns its keep
TDEE calculadora is aimed at people arriving with questions like these:
- "What is TDEE"
- "Activity multiplier TDEE"
- "How many calories should I eat"
- "What is tdee"
- "How to calculate tdee"
- "Tdee formula"
Where the number stops being useful
Every tool has an edge where it stops being the right answer. TDEE calculadora is no exception:
- For legally binding tax or medical decisions — cross-check with HMRC, NHS or a qualified professional.
- For very large or very small extremes the rounding error outgrows the useful precision.
- When the underlying rate or threshold has changed since the page was last reviewed — always verify with the primary source.
- When the input you have is already a derived figure (net of something) — feeding it in as "gross" will double-subtract.
Five things that trip everyone up
Every time you work out the numbers for a new scenario, one of these creeps in — it's worth knowing them ahead of time.
- Assuming the UK and US versions of the same unit are interchangeable — they're not.
- Typing a comma where the tool expects a dot (or vice versa).
- Rounding early — particularly painful in percentages and compound growth.
- Ignoring the time window: a 'per year' answer makes no sense with a monthly input.
- Treating the answer as private: screenshots are fine, but the URL always reruns cleanly.
The sources behind the numbers
Where the maths needs an external authority, we cross-check against:
- NHS
- British Nutrition Foundation
Works well alongside
If this question keeps coming up for you, the same cluster of tools usually comes next:
- BMR calculadora — Estimate your Basal Metabolic Rate — the calories your body burns at rest — with the Mifflin-St Jeor equation.
- BMI calculadora — Check your Body Mass Index in metric or imperial, with NHS weight categories explained.
- Macronutrient calculadora — Split your daily calories into protein, carbs and fat in grams, based on your body weight and training goal.
How we keep this accurate
Our calculadoras run on pure, unit-tested functions — the same logic lives in the browser and in the CI test suite. When tax rates, thresholds or official figures move, the update lands within 24 hours of the announcement. You can read the editorial policy and corrections policy.
Found an out-of-date number on TDEE calculadora or anywhere else in the Nutrition toolkit? Send it to the editorial desk and we'll patch it. Or browse the full calculadora directory for the next tool you need.