Volume calculators
Start from cubic inches, the natural cube of inch-length work, then convert to gallons, liters, cups, quarts, pints, ml, and cubic feet.
Popular volume converters
High-traffic tools for tanks, recipes, and shop math.
Cubic Inches to Gallons
US liquid gallons from cube dimensions or direct in³.
Gallons to Cubic Inches
Reverse path for container sizing and fill checks.
Cubic Inches to Liters
Metric volume for international specs.
Cubic Inches to Cubic Feet
Divide by 1,728 for ft³: room and lumber context.
Cubic inches ↔ US liquid
Cubic Inches to Gallons Calculator
Convert cubic inches to US gallons
Gallons to Cubic Inches
Convert US gallons to cubic inches
Cubic Inches to Cups
Convert cubic inches to cups
Cubic Inches to Quarts
Convert cubic inches to quarts
Cubic Inches to Pints
Convert cubic inches to pints
Cubic Inches to Milliliters
Convert cubic inches to milliliters
Cubic inches ↔ metric & cubic feet
Quick reference: volume anchors
US gallon & cup
| Unit | Cubic inches |
|---|---|
| 1 US gallon | 231 in³ |
| 1 US cup | 14.4375 in³ |
Cubic feet
1 ft³ = 1,728 in³ (12 × 12 × 12). Use cubic feet for rooms and large boxes; use in³ for small parts and engine displacement context.
Explore more categories
Length, area, cooking tools, construction, and more.