Flow Rate tools
Flow Rate Converter
Convert flow rate units for pumps, plumbing, HVAC, irrigation, hydraulics, and process calculations.
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Instant results1 cubic meter per second [m3/s] = 1000 liter per second [L/s]
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| Unit | Symbol | Conversion factor | Quick links |
|---|---|---|---|
| cubic meter per second | m3/s | Base unit | Reference unit |
| liter per second | L/s | 1 liter per second [L/s] = 0.001 m3/s | to m3/s from m3/s |
| liter per minute | L/min | 1 liter per minute [L/min] = 0.000017 m3/s | to m3/s from m3/s |
| liter per hour | L/h | 1 liter per hour [L/h] = 2.777778E-7 m3/s | to m3/s from m3/s |
| cubic meter per hour | m3/h | 1 cubic meter per hour [m3/h] = 0.000278 m3/s | to m3/s from m3/s |
| cubic foot per second | ft3/s | 1 cubic foot per second [ft3/s] = 0.028317 m3/s | to m3/s from m3/s |
| cubic foot per minute | ft3/min | 1 cubic foot per minute [ft3/min] = 0.000472 m3/s | to m3/s from m3/s |
| gallon (US) per minute | gpm | 1 gallon (US) per minute [gpm] = 0.000063 m3/s | to m3/s from m3/s |
| gallon (US) per hour | gal/h | 1 gallon (US) per hour [gal/h] = 0.000001 m3/s | to m3/s from m3/s |
Accuracy and Sources
Flow-rate factors use cubic meter per second as the reference unit for volume per time calculations. Content was last reviewed on 2026-05-21. For safety-critical work, confirm results against the relevant official standard.
How flow rate conversion works
Flow Rate conversion changes a measurement from one unit to another using a fixed factor or formula. Use the calculator above for instant results, then check the table and related converter links for common values.
Frequently Asked Questions
View sitemap →What is the base unit for flow rate?
The reference base unit used on this page is m3/s.
Are these flow rate conversions accurate?
Yes, the calculator uses the conversion factors listed on the page. For critical work, verify results with an authoritative standard.