Convert Cusecs to Cumecs (ft3/s to m3/s)
1 cusec (ft³/s) = 0.02831684659 cumecs (m³/s). 1 m³/s = 35.31466672 ft³/s. Example: 10000 ft³/s = 10000 × 0.02831684659 = 283.1684659 m³/s.
Also searched as cusec to cumec, cusecs to cumecs, cfs to m3/s and ft3/s to m³/s.
1 ft³/s = 0.02831684659 m³/s
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk cusec to cumec converter to paste a column from Excel.
How to Convert Cusec to Cumec
- 1 ft³/s = 0.02831684659 m³/s
- 1 m³/s = 35.31466672 ft³/s
- Example: convert 10000 ft³/s to m³/s: 10000 ft³/s = 10000 × 0.02831684659 m³/s = 283.1684659 m³/s
Formula
m³/s = ft³/s × 0.028316846592
or m³/s = ft³/s ÷ 35.31466672149
Derivation from SI units:
- 1 cusec = 1 ft³/s = 0.028316846592 m³/s.
- 1 cumec = 1 m³/s.
Both units are defined exactly, so the factor is exact. Cusec definition: cusec; Cumec definition: cumec.
Worked examples
- A dam release of 10000 ft³/s is 283.1684659 m³/s.
10000 ft³/s × 0.02831684659 = 283.1684659 m³/s - 1 ft³/s is 0.02831684659 m³/s.
1 ft³/s × 0.02831684659 = 0.02831684659 m³/s
Cusec to Cumec conversion table
| Cusecs (ft³/s) | Cumecs (m³/s) |
|---|---|
| 1 ft³/s | 0.02831684659 m³/s |
| 10 ft³/s | 0.2831684659 m³/s |
| 35.3 ft³/s | 0.9995846847 m³/s |
| 100 ft³/s | 2.831684659 m³/s |
| 500 ft³/s | 14.1584233 m³/s |
| 1000 ft³/s | 28.31684659 m³/s |
| 5000 ft³/s | 141.584233 m³/s |
| 10000 ft³/s | 283.1684659 m³/s |
| 50000 ft³/s | 1415.84233 m³/s |
| 100000 ft³/s | 2831.684659 m³/s |
Where it's used
Dam releases and canal flows announced in cusecs are converted to cumecs for hydrological and design calculations. Multiply by 0.0283168.
Cusec to other water discharge units
| Conversion | 1 ft³/s equals |
|---|---|
| cusec to cumec | 0.02831684659 m³/s |
| cusec to MLD | 2.446575546 MLD |
| cusec to litre per second | 28.31684659 L/s |
| cusec to cubic metre per day | 2446.575546 m³/day |
| cusec to MGD | 0.6463168831 MGD |
| cusec to MGD (imp) | 0.5381713837 MGD (imp) |
| cusec to acre-foot per day | 1.983471074 acre-ft/day |
Frequently asked questions
How many cumecs is one cusec?
1 cusec = 0.02831684659 m³/s, exactly 0.028316846592 m³/s.
How much water is 10,000 cusecs in a day?
10,000 cusecs for 24 h is 864 million ft³, or 0.864 TMC (24.47 MCM).
How many cumecs are in 1 cusec?
1 ft³/s = 0.02831684659 m³/s.
How do I convert cusecs to cumecs?
Multiply the value in ft³/s by 0.02831684659, or divide it by 35.31466672. For example, 10000 ft³/s × 0.02831684659 = 283.1684659 m³/s.
Is the ft³/s to m³/s conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "cubic foot per second".
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 4 (derived units) and Table 8 (non-SI units accepted for use with the SI).
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). Convert Cusecs to Cumecs (ft3/s to m3/s). Retrieved October 29, 2026, from https://scientificconverters.com/discharge/cusecs-to-cumecs/
IEEE
Scientific Converters, "Convert Cusecs to Cumecs (ft3/s to m3/s)," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/discharge/cusecs-to-cumecs/