Convert Cubic Metres to Acre-feet (m3 to acre-ft)
1 cubic metre (m³) = 0.0008107131938 acre-feet (acre-ft). 1 acre-ft = 1233.481838 m³. Example: 15 m³ = 15 × 0.0008107131938 = 0.01216069791 acre-ft.
Also searched as cubic metres to acre-ft, cubic metres in acre-ft, cubic metres into acre-feet, m3 to acre-ft, m3 in acre-feet, m3 into acre-foot, cubic metre to acre-foot, m3 to acre-feet converter, cubic meters to acre-feet and how many acre-feet in a cubic metre.
1 m³ = 0.0008107131938 acre-ft
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk cubic metre to acre-foot converter to paste a column from Excel.
How to Convert Cubic Metre to Acre-foot
- 1 m³ = 0.0008107131938 acre-ft
- 1 acre-ft = 1233.481838 m³
- Example: convert 15 m³ to acre-ft: 15 m³ = 15 × 0.0008107131938 acre-ft = 0.01216069791 acre-ft
Formula
acre-ft = m³ × 0.0008107131937899
or acre-ft = m³ ÷ 1233.481837548
Derivation from SI units:
- 1 m³ = 10⁻⁶ MCM.
- 1 acre-foot = 43,560 ft³ = 1233.48183754752 m³.
- 1 m³ = 0.000001 MCM ÷ 0.001233481837548 MCM per acre-ft = 0.0008107131937899 acre-ft
Both units are defined exactly, so the factor is exact. Cubic Metre definition: cubic metre; Acre-foot definition: acre-foot.
Worked examples
- A reading of 1000 m³ converts to 0.8107131938 acre-ft.
1000 m³ × 0.0008107131938 = 0.8107131938 acre-ft - A value of 100000 m³ is 81.07131938 acre-ft.
100000 m³ × 0.0008107131938 = 81.07131938 acre-ft
Cubic Metre to Acre-foot conversion table
| Cubic Metres (m³) | Acre-feet (acre-ft) |
|---|---|
| 1 m³ | 0.0008107131938 acre-ft |
| 10 m³ | 0.008107131938 acre-ft |
| 100 m³ | 0.08107131938 acre-ft |
| 1000 m³ | 0.8107131938 acre-ft |
| 10000 m³ | 8.107131938 acre-ft |
| 86400 m³ | 70.04561994 acre-ft |
| 100000 m³ | 81.07131938 acre-ft |
| 1000000 m³ | 810.7131938 acre-ft |
| 10000000 m³ | 8107.131938 acre-ft |
| 100000000 m³ | 81071.31938 acre-ft |
Where it's used
Cubic Metres are used for farm ponds, tanks and check-dam storage, while acre-feet appear in US reservoir capacity and water rights. Both measure volume of stored or released water (reservoirs, river flows, allocations), so the conversion is a fixed factor.
Cubic Metre to other water volume units
| Conversion | 1 m³ equals |
|---|---|
| cubic metre to acre-foot | 0.0008107131938 acre-ft |
| cubic metre to MCM | 0.000001 MCM |
| cubic metre to BCM | 1 × 10⁻⁹ BCM |
| cubic metre to TMC | 3.531466672 × 10⁻⁸ TMC |
| cubic metre to Mcft | 0.00003531466672 Mcft |
| cubic metre to MAF | 8.107131938 × 10⁻¹⁰ MAF |
| cubic metre to hectare-metre | 0.0001 ha·m |
| cubic metre to megalitre | 0.001 ML |
Show 2 more units
| cubic metre to cubic kilometre | 1 × 10⁻⁹ km³ |
|---|---|
| cubic metre to gigalitre | 0.000001 GL |
Frequently asked questions
How many acre-feet are in 1 cubic metre?
1 m³ = 0.0008107131938 acre-ft.
How do I convert cubic metres to acre-feet?
Multiply the value in m³ by 0.0008107131938, or divide it by 1233.481838. For example, 15 m³ × 0.0008107131938 = 0.01216069791 acre-ft.
Is the m³ to acre-ft 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
- 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).
- 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, "acre-foot".
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 Cubic Metres to Acre-feet (m3 to acre-ft). Retrieved October 29, 2026, from https://scientificconverters.com/water-volume/cubic-meters-to-acre-feet/
IEEE
Scientific Converters, "Convert Cubic Metres to Acre-feet (m3 to acre-ft)," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/water-volume/cubic-meters-to-acre-feet/