Convert Cubic Meter to US Gallon
Convert cubic meters to us gallons instantly. 1 cubic meter = 264.1720523581 us gallon — use the live calculator, the exact formula, a conversion table and worked examples. Also check the US Gallon to Cubic Meter converter for the reverse conversion.
Units explained
Cubic Meter
The cubic meter is the SI derived unit of volume: the volume of a cube one meter on each edge. It is the anchor for all volume conversions.
Defined from the meter, the SI base unit of length, fixed by the speed of light since 1983.
The standard scientific and industrial unit of volume worldwide; used for water, gas, concrete and freight.
SI base derivation.
US Gallon
The US liquid gallon is defined as exactly 231 cubic inches (3.785411784 liters).
Based on the English wine gallon of 231 cubic inches, retained by the US after 1824.
The primary US unit for fuel, milk and large beverage containers.
English wine gallon; US since 1824.
Cubic Meter to US Gallon conversion formula
The relationship between cubic meters and us gallons:
To convert cubic meters to us gallons, multiply the value in cubic meters by 264.1720523581. To reverse, multiply us gallons by 0.0037854118.
How to use this converter
Type a value into the calculator. The result in us gallons updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the US Gallon to Cubic Meter converter for the reverse direction.
Step-by-step: convert cubic meters to us gallons
- Write down the value in cubic meters (m³).
- Multiply that value by the factor 264.1720523581.
- The product is the equivalent value in us gallons (gal).
- To reverse, multiply the us gallon value by 0.0037854118.
Worked examples
Example 1 — Convert 1 m³ to gal:
1 × 264.1720523581 = 264.1720523581 gal
Example 2 — Convert 100 m³ to gal:
100 × 264.1720523581 = 26417.2052358148 gal
Real-world example — Fabric and tailoring
One cubic meter of fabric converts to a value in us gallons commonly used for seam allowances. Garment patterns frequently switch between the two units on a single instruction sheet.
1 m³ × 264.1720523581 = 264.1720523581 gal
Real-world example — Body height conversion (reverse direction)
You measure 1.75 cubic meters tall and need to fill in a gym membership form or medical record that asks for height in us gallons. This is the most-used everyday length conversion in metric-using countries.
1.75 m³ × 264.1720523581 = 462.3010916268 gal
Real-world example — Pet and accessory dimensions
A 3-cubic meter dog leash equals a tidy round value in us gallons. Pet-supply shopping frequently mixes the two units across product specifications.
3 m³ × 264.1720523581 = 792.5161570744 gal
Cubic Meter to US Gallon conversion table
Standard reference values for converting cubic meters to us gallons:
| Cubic Meter [m³] | US Gallon [gal] |
|---|---|
| 0.01 | 2.6417205236 |
| 0.1 | 26.4172052358 |
| 1 | 264.1720523581 |
| 2 | 528.3441047163 |
| 3 | 792.5161570744 |
| 4 | 1056.6882094326 |
| 5 | 1320.8602617907 |
| 10 | 2641.7205235815 |
| 20 | 5283.441047163 |
| 30 | 7925.1615707445 |
| 40 | 10566.8820943259 |
| 50 | 13208.6026179074 |
| 100 | 26417.2052358148 |
| 500 | 132086.0261790742 |
| 1000 | 264172.0523581484 |
Frequently asked questions
How many us gallons is 1 cubic meter?
How do I convert cubic meters to us gallons?
How do I convert us gallons back to cubic meters?
How many us gallons is 100 cubic meters?
Popular volume unit conversions
Convert Cubic Meter to other volume units
Show all Cubic Meter conversions
Metric / SI (13 units)
US Customary (Liquid) (15 units)
US Customary (Dry) (5 units)
Imperial (UK) (14 units)
Cubic (length-derived) (4 units)
Cooking / Culinary (5 units)
Industrial / Specialized (5 units)
Sources & references
Conversion factor (1 m³ = 264.1720523581 gal) 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 Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.