🧊 in³ to ml — Cubic Inch to Milliliter Converter

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

1 unit =
From
To
Formula 1 in³ = 16.3871 mL
UnitNameValue
0.001 in³0.0163871 ml
0.01 in³0.163871 ml
0.1 in³1.63871 ml
1 in³16.3871 ml
5 in³81.9355 ml
10 in³163.871 ml
50 in³819.355 ml
100 in³1638.71 ml
1000 in³16387.1 ml
Last updated: March 2026

Cubic Inch to Milliliter Conversion Table

Common cubic inch values converted to milliliter — factor: 1 in³ = 16.39 mL

Cubic Inch (in³)Milliliter (mL)Context
1 in³16.39 mL
5 in³81.94 mL
10 in³163.9 mL
16 in³262.2 mL
30 in³491.6 mL
61 in³999.6 mL
100 in³1,639 mL
231 in³3,785 mL
500 in³8,194 mL
1,000 in³1.639e+04 mL
1,728 in³2.832e+04 mL
3,000 in³4.916e+04 mL
5,000 in³8.194e+04 mL
1e+04 in³1.639e+05 mL
4.666e+04 in³7.646e+05 mL

About Cubic Inch to Milliliter Conversion

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

In everyday use, knowing that 5 in³ = 81.94 mL and 10 in³ = 163.9 mL covers most common situations. For bulk calculations, 100 in³ = 1639 mL is a useful anchor. The reverse conversion — milliliter back to cubic inch — uses the factor 0.06102, so 1 mL = 0.06102 in³.

All conversions use the internationally recognized factor of exactly 1 in³ = 16.39 mL. 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: Milliliter = Cubic Inch × 16.3871

Multiply any cubic inch value by 16.3871 to get milliliter. One cubic inch equals 16.3871 mL.

Reverse: Cubic Inch = Milliliter × 0.06102361

Worked Examples

One cubic inch
1 in³ × 16.3871 = 16.3871 mL
1 in³ = 16.387 mL — about 3 teaspoons.
One US gallon
231 in³ × 16.3871 = 3785.4201 mL
231 in³ = 3,785 mL = 1 US gallon — legally defined.
Soda can
21.7 in³ × 16.3871 = 355.60007 mL
21.7 in³ = 355 mL = 12 fl oz can.
One liter
61 in³ × 16.3871 = 999.6131 mL
61 in³ = 1,000 mL = 1 liter.

Mental Math Tricks

× 16.387

Cubic inches × 16.387 = mL. Round to × 16.4 for quick estimates.

1 in³ ≈ 16.4 mL

One cubic inch is about 16.4 mL — roughly 3 teaspoons.

Reverse

mL ÷ 16.387 = in³.

Who Uses This Conversion?

Motorcycle Mechanic

Compares engine displacements in cubic inches — a Harley Sportster 1200 displaces 73.2 in³.

CNC Machinist

Calculates material volume for machined parts in cubic inches for cost estimation.

Appliance Reviewer

Compares refrigerator and oven interior volumes in cubic inches on US spec sheets.

Mechanical Engineer

Determines hydraulic cylinder displacement in cubic inches for legacy US equipment.

HVAC Engineer

Compares compressor capacities in cubic inch displacement for older American systems.

Packaging Designer

Calculates product and box volumes in cubic inches to optimize pallet stacking.

Frequently Asked Questions

About Cubic Inch and Milliliter

Cubic Inch (in³)

The cubic inch is the volume of a cube with one-inch sides, equal to exactly 16.387064 mL. It belongs to US customary and British Imperial systems, in practical use since the 17th century.

Cubic inches appear most often in engine displacement for small engines and in precision machining for material volume calculations.

Interesting fact: A standard 12-fluid-ounce US soda can has a volume of about 21.7 cubic inches.

Milliliter (mL)

The milliliter is one-thousandth of a liter, in use since the metric system was codified in France in 1795. The milli- prefix (from Latin mille, thousand) was standardized as part of the original SI prefix system.

Milliliters are the workhorse of medicine and cooking: syringes, dropper bottles, and nutritional labels all rely on mL for precise small-volume measurement. A standard US teaspoon is approximately 4.929 mL.

Interesting fact: The milliliter is numerically identical to the cubic centimeter (cm³), so 1 mL = 1 cm³ exactly. This equivalence is widely used in medicine, where a 5 cc syringe holds exactly 5 mL.