Sweat Rate Calculator
Find your hourly sweat rate.
How the Sweat Rate Calculator works
Sweat Rate Calculator turns fluid loss liters and workout hours into sweat rate. It computes that as fluid lost divided by hours exercised.
Worked example: with Fluid loss liters 1.2, Workout hours 1.5, this tool returns sweat rate 0.8 L/h, sweat rate (ml/h) 800 mL/h. That default state is deterministic, so you can check the page against a known result before trusting your own numbers.
Private, in your browser
Sweat Rate Calculator runs entirely in your browser with no upload, account, or server call. Every figure is a planning estimate, so confirm anything important against the authoritative source or a professional before you rely on it.
Frequently Asked Questions
How does the Sweat Rate Calculator work?
It computes sweat rate as fluid lost divided by hours exercised. It also reports sweat rate (mL/h).
Does this tool use live data?
No. It runs on the numbers you type, using local arithmetic that recalculates instantly — nothing is fetched, uploaded, or stored.
What should I keep in mind?
For accuracy, add any fluid you drank during the session to the measured loss.
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