Converters
12
US gallons to Cubic meters Converter
Convert us gallons to cubic meters instantly with the formula, worked examples, rounding guidance, and related volume conversions.
Units
85
Mode
Live
Pair-specific conversion guide
US gallon to Cubic meter formula
Converting US gallons to cubic meters is straightforward using the exact factor of 0.003785411784. One US gallon equals this precise volume in cubic meters. This conversion is essential for applications like fuel storage, shipping containers, and scientific measurements where metric volume units are standard. Simply multiply the number of gallons by 0.003785411784 to obtain the equivalent cubic meters.
Formula model
1 gal = 0.003785411784 m3
1 US gallon equals
Quick factor: 1 gal = 0.003785411784 m3.
For quick mental estimates, remember that 1 US gallon is roughly 0.0038 cubic meters, or about 1/264 of a cubic meter.
Use the exact conversion factor 0.003785411784 for precise calculations, especially in engineering or scientific contexts.
Check the measurement system for cooking units: US customary and imperial volumes are not always the same.
Precision and rounding
The calculation uses the catalog's fixed conversion factors between gal and m3. Full decimal precision is kept for the calculation; only the displayed value is rounded for readability.
Reference: NIST conversion factorsVolume
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Conversion table
1 US gallon equals
| Unit | Value |
|---|---|
| Liter L | 3.785411784 |
| Milliliter mL | 3785.411784 |
| Cubic meter m3 | 0.003785411784 |
| US teaspoon tsp | 768 |
| US tablespoon tbsp | 256 |
| US fluid ounce fl oz | 128 |
| US cup cup | 16 |
| US pint pt | 8 |
| US quart qt | 4 |
FAQ
US gallon to Cubic meter questions
How do I convert 5 US gallons to cubic meters?
Multiply 5 by 0.003785411784 to get 0.01892705892 cubic meters.
Is the US gallon the same as the imperial gallon for this conversion?
No, this conversion applies only to the US gallon. The imperial gallon is larger, with 1 imperial gallon equaling about 0.00454609 cubic meters.