Shower Water and Hot-Water Share

How to use this tool

1. Enter the measured quantities and your own planning assumptions.
2. Review all calculated outputs and the stated limitations.

Try this example

{
  "flow": 8,
  "minutes": 7,
  "cold": 10,
  "hot": 60,
  "mixed": 40,
  "people": 4
}

Accuracy and scope

Ideal mixing balance only, not a temperature recommendation. Ignores pipe losses and heater recovery.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.