📏 US gallons to Cubic meters Converter
Convert us gallons (gal) to cubic meters (m³) instantly, with the formula, a worked example and a conversion table.
Quick answer: 1 us gallon (gal) = 0.0037854118 cubic meters (m³). Formula: m³ = gal × 0.0037854118.
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US gallons to Cubic meters Converter inputs
Result
US gallons to Cubic meters conversion table
| US gallons (gal) | Cubic meters (m³) |
|---|---|
| 0.1 gal | 0.0003785412 m³ |
| 0.5 gal | 0.0018927059 m³ |
| 1 gal | 0.0037854118 m³ |
| 2 gal | 0.0075708236 m³ |
| 3 gal | 0.011356235 m³ |
| 5 gal | 0.018927059 m³ |
| 10 gal | 0.037854118 m³ |
| 20 gal | 0.075708236 m³ |
| 25 gal | 0.094635295 m³ |
| 50 gal | 0.18927059 m³ |
| 100 gal | 0.37854118 m³ |
| 1,000 gal | 3.7854118 m³ |
Other volume conversions
gal to mLgal to Lgal to m³gal to tspgal to tbspgal to fl ozgal to cupgal to ptgal to qtgal to imp gal
How to convert us gallons to cubic meters
Multiply the number of us gallons by 0.0037854118 to get cubic meters: m³ = gal × 0.0037854118.
Example: 5 gal = 0.018927059 m³.
The us gallon (gal) and the cubic meter (m³) are both units of volume. Need the opposite direction? Use the m³ to gal converter.
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Metric and imperial units
The metric system (SI) is used by almost every country and by science worldwide. Its units scale by powers of ten – 1 kilometer is 1,000 meters, 1 meter is 100 centimeters – which makes conversions inside the system easy. The imperial and US customary systems (inches, feet, pounds, gallons) are still used daily in the United States and partly in the UK.
Since 1959 the inch has been defined as exactly 2.54 centimeters and the pound as exactly 0.45359237 kilograms, so conversions between the two systems are exact. Note that a US gallon (3.785 L) and an imperial gallon (4.546 L) are different – choose the right one above.
This converter covers 10 categories and 66 units: length, weight, temperature, volume, area, speed, time, data, energy, pressure.
Frequently asked questions
How many cubic meters are in a us gallon?
1 us gallon = 0.0037854118 cubic meters.
How do I convert us gallons to cubic meters?
Use the formula m³ = gal × 0.0037854118. For example, 5 gal = 0.018927059 m³.
How do I convert cubic meters back to us gallons?
1 cubic meter = 264.17205 us gallons. Use the m³ to gal converter linked on this page.
Are these conversions exact?
Yes – all factors use the internationally defined values (for example 1 inch = 2.54 cm exactly, 1 pound = 0.45359237 kg exactly). Results are rounded to 8 significant digits for display.