# Water Intake Calculator

A daily water target that fits your body weight and training.

URL: https://shortformkit.com/water-intake-calculator/
Updated: 2026-10-13

A common rule of thumb is about 33 ml per kg of body weight, plus about half a litre for every hour of exercise. Hot weather, illness and pregnancy raise the need. Food also contains water.

**Formula:** Water (l) ≈ 0.033 × weight in kg + 0.5 × hours of exercise

Results are estimates for general information, not medical or financial advice.

## How it works

1. **Enter your values** The result updates as you type.
2. **Switch units if needed** Metric or US units, where it applies.
3. **Read the result** Nothing is stored or sent anywhere.

## FAQ

**Is it free?**
Yes. No account, no limits.

**Is my data stored?**
No. The calculation happens in your browser and nothing is sent to a server.


Source: Shortform Kit (https://shortformkit.com/water-intake-calculator/). Free, no login.