Convert Acre-Foot to Cubic Foot
Convert acre-feet to cubic feet instantly. 1 acre-foot = 43560 cubic foot — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Cubic Foot to Acre-Foot converter for the reverse conversion.
Units explained
Acre-Foot
An acre-foot is the volume covering one acre to a depth of one foot (1,233.48 m³).
Combines the acre and the foot for large water volumes.
The standard US unit for reservoir and irrigation water.
US water management.
Cubic Foot
A cubic foot is the volume of a cube one foot on a side (28.3168 L).
Derived by cubing the international foot (0.3048 m).
Used for natural gas, refrigerators, shipping and HVAC.
1959 yard agreement.
Acre-Foot to Cubic Foot conversion formula
The relationship between acre-feet and cubic feet:
To convert acre-feet to cubic feet, multiply the value in acre-feet by 43560. To reverse, multiply cubic feet by 2.295684e-5.
How to use this converter
Type a value into the calculator. The result in cubic feet updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Cubic Foot to Acre-Foot converter for the reverse direction.
Step-by-step: convert acre-feet to cubic feet
- Write down the value in acre-feet (ac·ft).
- Multiply that value by the factor 43560.
- The product is the equivalent value in cubic feet (ft³).
- To reverse, multiply the cubic foot value by 2.295684e-5.
Worked examples
Example 1 — Convert 1 ac·ft to ft³:
1 × 43560 = 43560 ft³
Example 2 — Convert 100 ac·ft to ft³:
100 × 43560 = 4356000 ft³
Real-world example — Geographic to architectural scale
One acre-foot equals 100,000 cubic feet. Map scales use this when an architectural site plan (in the smaller unit) must be related to road-network plans (in the larger unit) on the same drawing.
1 ac·ft × 43560 = 43560 ft³
Real-world example — Geographic to architectural conversion
One acre-foot equals 100,000 cubic feet. The conversion bridges geographic-scale survey work and architectural-scale building plans on the same drawing.
1 ac·ft × 43560 = 43560 ft³
Acre-Foot to Cubic Foot conversion table
Standard reference values for converting acre-feet to cubic feet:
| Acre-Foot [ac·ft] | Cubic Foot [ft³] |
|---|---|
| 0.01 | 435.6 |
| 0.1 | 4356 |
| 1 | 43560 |
| 2 | 87120 |
| 3 | 130680 |
| 4 | 174240 |
| 5 | 217800 |
| 10 | 435600 |
| 20 | 871200 |
| 30 | 1306800 |
| 40 | 1742400 |
| 50 | 2178000 |
| 100 | 4356000 |
| 500 | 2.178e+7 |
| 1000 | 4.356e+7 |
Frequently asked questions
How many cubic feet is 1 acre-foot?
How do I convert acre-feet to cubic feet?
How do I convert cubic feet back to acre-feet?
How many cubic feet is 100 acre-feet?
Popular volume unit conversions
Convert Acre-Foot to other volume units
Show all Acre-Foot conversions
Metric / SI (3 units)
US Customary (Liquid) (1 units)
Imperial (UK) (1 units)
Cubic (length-derived) (1 units)
Sources & references
Conversion factor (1 ac·ft = 43560 ft³) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.