Calculator
What the Water Intake Tracker does
Water Intake Tracker: calculates Litres/day from Body weight, Unit and Exercise (minutes/day). Example: body weight 70, unit kg and exercise (minutes/day) 30 gives litres/day 2.66.
With Body weight, Unit and Exercise (minutes/day) entered, the Water Intake Tracker works out Litres/day. Values update as you type, so comparing options is a matter of editing one field.
Typical users are readers who want the job done without signing up. Having the check sitting in a browser tab beats hunting for the right app.
Because it is all local, the tool is as fast as your device and as private as your own notes.
Field definitions, the method, and a worked example from the default values are all set out further down the page.
What do the Water Intake Tracker fields mean?
The Water Intake Tracker uses 3 inputs. Nothing is blank on load, so you can see the shape of the answer before supplying your own figures.
| Field | What to enter | Default |
|---|---|---|
| Body weight | accepts 20 to 300 | 70 |
| Unit | choose from kg or lb | kg |
| Exercise (minutes/day) | accepts 0 to 600 | 30 |
How does the Water Intake Tracker work?
Each output is derived from the inputs above in a single pass; there is no hidden state carried between runs, so the same inputs always give the same calculation.
An empty or malformed field stops the calculation rather than being treated as zero.
Worked example
These are the values the Water Intake Tracker loads by default, and the result it produces from them. These are the exact values loaded when the page opens, and the answer they produce.
| Body weight | 70 |
|---|---|
| Unit | kg |
| Exercise (minutes/day) | 30 |
| Litres/day | 2.66 |
|---|
How to use it
- Type Body weight (20 to 300).
- Pick a value for Unit: the options are kg or lb.
- Set Exercise (minutes/day) (0 to 600).
- No submit step is needed; the output updates while you edit.
- Look at Litres/day in the output panel.
- Print gives a tidy version without the navigation, which is handy for attaching to a file.
What this tool does not do
- Results are informational and should be checked against an authoritative source where it matters.
- Treat it as a fast first pass, not as the final word on a decision that matters.
- Garbage in, garbage out: confirm each figure means what you think it does before trusting the result.
Frequently asked questions
Just Body weight, Unit and Exercise (minutes/day). Nothing starts empty, so nothing is mandatory before you see a result.
Body weight accepts 20 to 300. Anything beyond those bounds is flagged rather than approximated.
With the values loaded when the page opens, litres/day comes out as 2.66. Overwrite any of the starting values and the result follows.
No: there is no server involved. Close the tab and the values are gone.
No payment and no login. Advertising covers the running costs.
There is no estimation step. The result is computed, not inferred.