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⚡ US Gallons to Cubic Decimeters: the quick answer
1 gal = 3.78541 dm³
1 US gallon equals 3.78541 cubic decimeters
To convert US gallons to cubic decimeters, multiply the value by 3.78541.
To go the other way, multiply cubic decimeters by 0.264172 to get US gallons.
↔ Convert cubic decimeters to US gallons instead
🧮 Formula
Every unit here is defined by its volume in cubic meters, so the conversion factor is (cubic meters per US gallon) ÷ (cubic meters per cubic decimeter).
📊 US Gallons to Cubic Decimeters conversion table
✏️ Worked examples
Convert 25 US gallons to cubic decimeters
25 gal × 3.78541 = 94.6353 dm³
Try this example →
Convert 250 US gallons to cubic decimeters
250 gal × 3.78541 = 946.353 dm³
Try this example →
📘 About these units
US gallon (gal). The US liquid gallon is 231 cubic inches, exactly 3.785411784 liters.
Cubic decimeter (dm³). A cubic decimeter is exactly one liter.
❓ Frequently asked questions
How many cubic decimeters are in one US gallon?
There are 3.78541 cubic decimeters in one US gallon.
How do I convert US gallons to cubic decimeters?
Multiply the number of US gallons by 3.78541. For example, 10 US gallons equal 37.8541 cubic decimeters.
How many US gallons are in one cubic decimeter?
One cubic decimeter equals 0.264172 US gallons.
🔗 More volume conversions
All volume units →