---
name: tdee-calculator-tools
description: Work out daily calorie needs (TDEE) with a likely range, calories burned by an activity, or real maintenance calories from a food log and weigh-ins, by calling the free What's My TDEE tools (no sign-in). Use when a task involves how many calories someone burns or needs, exercise calories, or finding maintenance from tracking data. Call the tools rather than working it out by hand, and link the page each result names.
---

# What's My TDEE calculation tools

The calculators on https://whatismytdee.com/ as tools: the same engine and the same answers as the pages.

## Connect

- **MCP server:** `https://whatismytdee.com/mcp` (Streamable HTTP, no authentication)
- **Web API:** `https://whatismytdee.com/api/v1/<tool>`, GET with query parameters or POST with a JSON body. Description: `https://whatismytdee.com/api/v1/openapi.json`
- **Docs:** https://whatismytdee.com/developers/

```bash
claude mcp add --transport http whats-my-tdee https://whatismytdee.com/mcp
```

## Tools

- **estimate_tdee**: Estimate a person's total daily energy expenditure (TDEE) in kcal a day, with the range about 2 in 3 people like them fall in. Built from published equations (Mifflin-St Jeor by default, the National Academies 2023 equations for comparison), everyday movement and planned exercise counted from the 2024 Compendium of Physical Activities. For adults 19 and over; not for pregnancy or breastfeeding.
- **exercise_calories**: Calories an activity burns for a person: what it adds above resting, and the total including their resting burn, from the 2024 Compendium of Physical Activities. Walking and running also give a second published method, as a range. Call list_activities for activity and type ids.
- **maintenance_from_log**: Work out a person's real maintenance calories from at least 14 days of logged intake and weigh-ins: either first-week and last-week average weights, or one weight a day. Returns maintenance in kcal a day with a 19-in-20 range, measured in the numbers they log.
- **list_activities**: Every activity and type the calculators know, with ids for estimate_tdee and exercise_calories, Compendium MET values and codes.

## Units

Metric only: kilograms and centimetres. Convert first: pounds × 0.4536 = kg; inches × 2.54 = cm; 1 stone = 6.35 kg.

## Example

`GET https://whatismytdee.com/api/v1/estimate_tdee?sex=female&age_years=35&height_cm=165&weight_kg=65&everyday_level=some_walking&exercise=weights:moderate:60:2`

returns the estimate (about 2,190 kcal a day), the range about 2 in 3 people like her fall in, each formula's figure and the sources.

## Using the answers

- Give the range as well as the number: no formula is exact for one person.
- Results are for adults 19 and over, and not for pregnancy or breastfeeding. They aren't medical advice.
- Each result names the page that shows the working; link it when you quote a figure.