🧊 cm³ to gal — Cubic Centimeter to US Gallon Converter

Convert volume units — liters, gallons, cups, milliliters, cubic meters, barrels and more.

1 unit =
From
To
Formula 1 cm³ = 0.00026417218 gal
UnitNameValue
0.001 cm³2.64172e-07 gal
0.01 cm³2.64172e-06 gal
0.1 cm³2.64172e-05 gal
1 cm³0.000264172 gal
5 cm³0.00132086 gal
10 cm³0.00264172 gal
50 cm³0.0132086 gal
100 cm³0.0264172 gal
1000 cm³0.264172 gal
Last updated: March 2026

Cubic Centimeter to US Gallon Conversion Table

Common cubic centimeter values converted to us gallon — factor: 1 cm³ = 0.0002642 gal

Cubic Centimeter (cm³)US Gallon (gal)Context
1 cm³0.0002642 gal
5 cm³0.001321 gal
10 cm³0.002642 gal
15 cm³0.003963 gal
30 cm³0.007925 gal
60 cm³0.01585 gal
100 cm³0.02642 gal
150 cm³0.03963 gal
240 cm³0.0634 gal
355 cm³0.09378 gal
500 cm³0.1321 gal
750 cm³0.1981 gal
1,000 cm³0.2642 gal
1,500 cm³0.3963 gal
3,785 cm³0.9999 gal

About Cubic Centimeter to US Gallon Conversion

Converting cubic centimeter to us gallon comes up frequently in cooking, chemistry, medicine, and engineering. A recipe written in metric units may need to be adapted for a kitchen using us gallon, or a laboratory protocol may specify volumes in cubic centimeter that need to be measured with equipment calibrated in us gallon.

In everyday use, knowing that 5 cm³ = 0.001321 gal and 10 cm³ = 0.002642 gal covers most common situations. For bulk calculations, 100 cm³ = 0.02642 gal is a useful anchor. The reverse conversion — us gallon back to cubic centimeter — uses the factor 3785, so 1 gal = 3785 cm³.

All conversions use the internationally recognized factor of exactly 1 cm³ = 0.0002642 gal. Calculations are performed in IEEE 754 double-precision floating point, giving accuracy to at least 8 significant figures — more than sufficient for any practical application.

Quick Answer

Formula: US Gallon = Cubic Centimeter × 0.00026417218

Multiply any cubic centimeter value by 0.00026417218 to get us gallon. One cubic centimeter equals 0.00026417218 gal.

Reverse: Cubic Centimeter = US Gallon × 3785.41

Worked Examples

One US gallon
3785 cm³ × 0.00026417218 = 0.99989169 gal
3,785 cm³ = 1 US gallon.
One US quart
946 cm³ × 0.00026417218 = 0.24990688 gal
946 cm³ = 0.25 gallons = 1 quart.
One US cup
236.6 cm³ × 0.00026417218 = 0.062503137 gal
236.6 cm³ = 0.0625 gallons = 1 cup.
One liter
1000 cm³ × 0.00026417218 = 0.26417218 gal
1,000 cm³ = 0.2642 gallons.

Mental Math Tricks

Exact factor

1 cm³ = 0.00026417218 gal. Memorize this for instant mental estimates.

Rounded shortcut

Use 0.00026417218 as a quick mental factor. Multiply your cubic centimeters value by this to estimate US gallons.

Reverse check

To verify: multiply your result by 3785.41 to recover the original cm³ value.

Who Uses This Conversion?

Surgeon

Reports tumor volumes, implant dimensions, and organ measurements in cubic centimeters (cc).

Automotive Engineer

Specifies engine displacement in cc: 1000 cc = one liter of swept volume.

Materials Scientist

Measures specimen volume in cm³ to calculate density for new materials.

Dentist

Calculates volumes of impression materials, fillings, and bone grafts in cc.

Analytical Chemist

Prepares standard solutions using volumetric glassware graduated in mL (= cm³).

Pharmaceutical Scientist

Designs drug delivery capsules with active ingredient volumes in cubic centimeters.

Frequently Asked Questions

About Cubic Centimeter and US Gallon

Cubic Centimeter (cm³)

The cubic centimeter (also cc or mL) is the volume of a cube measuring 1 cm on each side. It has been part of the CGS system since the 19th century, formalized by the British Association for the Advancement of Science in 1874.

In medicine and pharmacy, the cc is the preferred volume notation for injection doses, IV drips, and surgical implants. Automotive engineers use cc to express engine displacement.

Interesting fact: Because 1 mL = 1 cm³ exactly, the units are fully interchangeable — medical staff say 'cc' while chemists say 'mL'.

US Gallon (gal)

The US liquid gallon is defined as exactly 231 cubic inches, or 3.785411784 liters. It traces its origins to the Queen Anne wine gallon of 1707, which American colonies adopted.

The US gallon differs from the UK Imperial gallon by about 16.5%. This matters for fuel economy: a US MPG figure is lower than the equivalent UK MPG for the same car.

Interesting fact: The United States, Liberia, and Myanmar are the only countries using the US gallon as a primary everyday volume unit.