m³ to Gallons Converter
Convert cubic meters to US gallons in seconds. Enter a value in m³ and the tool will calculate the result in US liquid gallons using gal = m³ × 264.172052358. This also works if you are looking for m3 to gal, cubic meter to gallon, or cubic meters to gallons.
Why Volume Conversion Matters
Cubic meters to gallons operates at an industrial scale — water treatment plants, agricultural irrigation reservoirs, and large storage tanks are typically specified in cubic meters internationally, but a US-based engineer or supplier often needs the gallon equivalent to match domestic pump ratings, tank certifications, or billing units from a water utility. A single cubic meter converts to roughly 264 gallons, a large enough multiplier that even small input errors produce big downstream mistakes in a capacity estimate. This conversion rarely comes up casually — it's almost always tied to a project spec, a utility bill, or an equipment purchase where the number has real cost implications.
Quick Reference
Cubic Meter to Gallon Conversion Table
Use this quick chart for common cubic meter to gallons, m3 to gallon, and cbm to gallons conversions. The exact conversion factor is 264.172052358, and results below are rounded to 6 decimal places.
| Cubic Meters (m³) | Calculation | US Gallons (gal) |
|---|---|---|
| 0.001 m³ | 0.001 × 264.172052358 | 0.264172 gal |
| 0.01 m³ | 0.01 × 264.172052358 | 2.641721 gal |
| 0.1 m³ | 0.1 × 264.172052358 | 26.417205 gal |
| 0.25 m³ | 0.25 × 264.172052358 | 66.043013 gal |
| 0.5 m³ | 0.5 × 264.172052358 | 132.086026 gal |
| 0.75 m³ | 0.75 × 264.172052358 | 198.129039 gal |
| 1 m³ | 1 × 264.172052358 | 264.172052 gal |
| 1.5 m³ | 1.5 × 264.172052358 | 396.258079 gal |
| 2 m³ | 2 × 264.172052358 | 528.344105 gal |
| 2.5 m³ | 2.5 × 264.172052358 | 660.430131 gal |
| 3 m³ | 3 × 264.172052358 | 792.516157 gal |
| 5 m³ | 5 × 264.172052358 | 1320.860262 gal |
| 10 m³ | 10 × 264.172052358 | 2641.720524 gal |
| 15 m³ | 15 × 264.172052358 | 3962.580785 gal |
| 20 m³ | 20 × 264.172052358 | 5283.441047 gal |
| 25 m³ | 25 × 264.172052358 | 6604.301309 gal |
| 50 m³ | 50 × 264.172052358 | 13208.602618 gal |
| 100 m³ | 100 × 264.172052358 | 26417.205236 gal |
Step-by-Step
How to Convert m3 to Gallons
To convert m3 to gallons, multiply the cubic meter value by the standard US conversion factor.
The m3 to Gallon Formula
A cubic meter (m³) is a metric unit of volume. A gallon (gal) on this page means the US liquid gallon. For accurate cubic meter to gallon conversion, use the exact factor 264.172052358 US gallons for every 1 cubic meter.
To convert in reverse, 1 US gallon = 0.003785411784 m³. That means if you want to know cubic meters in a gallon, the answer is 0.003785411784 cubic meters.
How to Convert Cubic Meters to Gal
Enter the cubic meter value
Start with the number of m3, cu m, or meters cubed you want to convert.
Multiply by 264.172052358
Example: 2 m³ × 264.172052358 = 528.344105 gal.
Write the result in US gallons
Always label the result as US gallons to avoid confusion with imperial gallons.
Cubic Meters vs Gallons
How Many Gallons Are in a Cubic Meter?
Many users search for how many gallons are in a cubic meter, how many gallons in a cubic meter, or how many US gallons in a cubic meter. The exact answer is 1 cubic meter = 264.172052358 US gallons.
So whether you search for m3 in gallons, m3 to gallons, m 3 to gal, convert from m3 to gallon, or converter m3 to gallon, the same conversion factor applies.
This conversion is commonly used for tank capacity, pools, water storage, fuel volume, industrial containers, shipping, and agricultural systems where volume is listed in cubic meters but capacity is discussed in gallons.
For example, 0.5 m³ = 132.086026 gal, 1 m³ = 264.172052 gal, and 2 m³ = 528.344105 gal.
Worked Examples
Sample m3 to Gallons Calculations
Here are some common examples for m3 to gallons, cubic meter to gallon, and convert cubic meters to gallons.
0.1 m³ to gal
0.1 × 264.172052358 = 26.417205 gal. So 0.1 cubic meter equals just over 26 US gallons.
0.5 m³ to gallons
0.5 × 264.172052358 = 132.086026 gal. Half a cubic meter equals a little over 132 US gallons.
1 m³ to gallons
1 × 264.172052358 = 264.172052 gal. One cubic meter equals 264.172052 US gallons.
2 m³ to gal
2 × 264.172052358 = 528.344105 gal. Two cubic meters equals 528.344105 US gallons.
5 m³ to gallon conversion
5 × 264.172052358 = 1320.860262 gal. Five cubic meters equals just over 1320 US gallons.
10 m³ to gallons
10 × 264.172052358 = 2641.720524 gal. Ten cubic meters equals 2641.720524 US gallons.
FAQ
Frequently Asked Questions
Common questions about m3 to gallons, cubic meter to gallons, and related conversions.