Convert US Gallon to Cubic Centimeter
Convert us gallons to cubic centimeters instantly. 1 us gallon = 3785.411784 cubic centimeter — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Cubic Centimeter to US Gallon converter for the reverse conversion.
Units explained
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 Centimeter
A cubic centimeter is the volume of a cube one centimeter on a side, exactly equal to one milliliter.
Derived from the centimeter; long used in the centimeter–gram–second (CGS) system.
Standard for engine displacement, laboratory volumes and medical dosing (often written cc).
CGS system, 19th c.
US Gallon to Cubic Centimeter conversion formula
The relationship between us gallons and cubic centimeters:
To convert us gallons to cubic centimeters, multiply the value in us gallons by 3785.411784. To reverse, multiply cubic centimeters by 0.0002641721.
How to use this converter
Type a value into the calculator. The result in cubic centimeters updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Cubic Centimeter to US Gallon converter for the reverse direction.
Step-by-step: convert us gallons to cubic centimeters
- Write down the value in us gallons (gal).
- Multiply that value by the factor 3785.411784.
- The product is the equivalent value in cubic centimeters (cm³).
- To reverse, multiply the cubic centimeter value by 0.0002641721.
Worked examples
Example 1 — Convert 1 gal to cm³:
1 × 3785.411784 = 3785.411784 cm³
Example 2 — Convert 100 gal to cm³:
100 × 3785.411784 = 378541.1784 cm³
Real-world example — Adjacent small-scale precision
One us gallon equals 1,000 cubic centimeters — the standard sub-millimeter precision conversion that materials engineers use whenever they switch between bulk material thickness specs (larger unit) and surface-finish characteristics (smaller unit).
1 gal × 3785.411784 = 3785.411784 cm³
Real-world example — Adjacent metric sub-units
One us gallon equals 1,000 cubic centimeters. Engineers move between these scales constantly: PCB feature sizes in the larger unit, wire-bond diameters in the smaller.
1 gal × 3785.411784 = 3785.411784 cm³
US Gallon to Cubic Centimeter conversion table
Standard reference values for converting us gallons to cubic centimeters:
| US Gallon [gal] | Cubic Centimeter [cm³] |
|---|---|
| 0.01 | 37.85411784 |
| 0.1 | 378.5411784 |
| 1 | 3785.411784 |
| 2 | 7570.823568 |
| 3 | 11356.235352 |
| 4 | 15141.647136 |
| 5 | 18927.05892 |
| 10 | 37854.11784 |
| 20 | 75708.23568 |
| 30 | 113562.35352 |
| 40 | 151416.47136 |
| 50 | 189270.5892 |
| 100 | 378541.1784 |
| 500 | 1892705.8920000002 |
| 1000 | 3785411.7840000005 |
Frequently asked questions
How many cubic centimeters is 1 us gallon?
How do I convert us gallons to cubic centimeters?
How do I convert cubic centimeters back to us gallons?
How many cubic centimeters is 100 us gallons?
Popular volume unit conversions
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Metric / SI (15 units)
US Customary (Liquid) (14 units)
US Customary (Dry) (5 units)
Imperial (UK) (14 units)
Cubic (length-derived) (4 units)
Cooking / Culinary (5 units)
Sources & references
Conversion factor (1 gal = 3785.411784 cm³) 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.