Formula
US gpm=collected gallons ×60/seconds.
- Use the units shown beside each field.
- Results update automatically whenever you change an input.
- Displayed values use up to four decimal places, or scientific notation for very small or large numbers. Calculations use standard floating-point arithmetic; exact integer and fraction tools identify their own precision rules.
- Timed-volume measurement; US liquid gallons, not imperial gallons. Does not infer pressure or pump capability.
Example Calculation
Example inputs
- Collected volume: 5 US gal
- Collection time: 30 s
Collected volume = 5 US gal; Collection time = 30 s. Primary result: 10.
Frequently asked questions
How do I use this calculator?
Enter collected volume, collection time. The result updates automatically. Use Reset to restore the example values.
What method does it use?
US gpm=collected gallons ×60/seconds.. Timed-volume measurement; US liquid gallons, not imperial gallons. Does not infer pressure or pump capability.
Why might a rounded result differ?
The calculation keeps full numeric precision internally, then rounds the displayed result. Rounding intermediate steps by hand can produce a slightly different answer.
Are my inputs saved online?
No. This calculator processes your inputs in your browser. A recently used list stores only calculator names on this device, not your entered values.
Check the assumptions and units before using this result. Read about calculation methods.