Liters per Second to Cubic Meters per Hour (L/s to m3/h)
1 liter per second (L/s) equals 3.6 cubic meters per hour (m³/h).
1 L/s = 3.6 m³/h
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk liter per second to cubic meter per hour converter to paste a column from Excel.
How to Convert Liter per Second to Cubic Meter per Hour
- 1 L/s = 3.6 m³/h
- 1 m³/h = 0.2777777778 L/s
- Example: convert 15 L/s to m³/h: 15 L/s = 15 × 3.6 m³/h = 54 m³/h
Formula
m³/h = L/s × 3.6
Derivation from SI units:
- 1 L/s = 10⁻³ m³ ÷ 1 s
- 1 m³/h = 1 m³ ÷ 3600 s
- 1 L/s = 0.001 m³/s ÷ 0.0002777777777778 m³/s per m³/h = 3.6 m³/h
Both units are defined exactly, so the factor is exact. Liter per Second definition: liter per second; Cubic Meter per Hour definition: cubic meter per hour.
Worked examples
- 1 L/s is exactly 3.6 m³/h.
1 L/s × 3.6 = 3.6 m³/h - An air-handling unit delivering 250 L/s moves 900 m³/h.
250 L/s × 3.6 = 900 m³/h
Liter per Second to Cubic Meter per Hour conversion table
| Liters per Second (L/s) | Cubic Meters per Hour (m³/h) |
|---|---|
| 0.1 L/s | 0.36 m³/h |
| 0.5 L/s | 1.8 m³/h |
| 1 L/s | 3.6 m³/h |
| 2 L/s | 7.2 m³/h |
| 2.5 L/s | 9 m³/h |
| 5 L/s | 18 m³/h |
| 7.5 L/s | 27 m³/h |
| 10 L/s | 36 m³/h |
| 15 L/s | 54 m³/h |
| 20 L/s | 72 m³/h |
| 25 L/s | 90 m³/h |
| 50 L/s | 180 m³/h |
| 75 L/s | 270 m³/h |
| 100 L/s | 360 m³/h |
| 250 L/s | 900 m³/h |
| 500 L/s | 1800 m³/h |
| 1000 L/s | 3600 m³/h |
Where it's used
Ventilation designs in L/s are converted to m³/h to match equipment catalogues. 1 L/s = 3.6 m³/h exactly.
Liter per Second to other flow rate units
| Conversion | 1 L/s equals |
|---|---|
| liter per second to cubic meter per second | 0.001 m³/s |
| liter per second to cubic meter per hour | 3.6 m³/h |
| liter per second to liter per minute | 60 L/min |
| liter per second to cubic centimeter per second | 1000 cm³/s |
| liter per second to cubic centimeter per minute | 60000 cm³/min |
| liter per second to sccm | 60000 sccm |
| liter per second to SLPM | 60 SLPM |
| liter per second to cubic foot per minute | 2.118880003 CFM |
| liter per second to US gallon per minute | 15.85032314 GPM |
Frequently asked questions
How many m³/h is 1 L/s?
Exactly 3.6 m³/h.
How many cubic meters per hour are in 1 liter per second?
1 L/s = 3.6 m³/h.
How do I convert liters per second to cubic meters per hour?
Multiply the value in L/s by 3.6. For example, 15 L/s × 3.6 = 54 m³/h.
Is the L/s to m³/h conversion exact?
Yes. Both units are defined exactly, and 1 L/s is exactly 3.6 m³/h.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 8 (litre).
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 8 (hour) with Table 2 (cubic metre).
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Liters per Second to Cubic Meters per Hour (L/s to m3/h). Retrieved October 18, 2026, from https://scientificconverters.com/flow-rate/liters-per-second-to-cubic-meters-per-hour/
IEEE
Scientific Converters, "Liters per Second to Cubic Meters per Hour (L/s to m3/h)," scientificconverters.com. Accessed: Oct. 18, 2026. [Online]. Available: https://scientificconverters.com/flow-rate/liters-per-second-to-cubic-meters-per-hour/