Cubic Inches to Fluid Ounces Converter
Convert cubic inches to US fluid ounces (and UK fluid ounces) instantly with common volume reference points.
Use the Cubic Inches to Fluid Ounces Converter
Volume Converter
Common Reference Points
| Volume | in³ | fl oz (US) |
|---|
Conversion Formulas
in³ → US fl oz
fl oz = in³ × 128/231
US fl oz → in³
in³ = fl oz × 231/128
in³ → UK fl oz
fl oz = in³ ÷ 1.73387
UK fl oz → in³
in³ = fl oz × 1.73387
US: 1 gal = 231 in³ = 128 fl oz (NIST). UK: 1 fl oz = 28.4131 mL exactly (Weights & Measures Act 1985).
Summary
Convert cubic inches to US fluid ounces (and UK fluid ounces) instantly with common volume reference points.
How it works
- Enter a value in cubic inches or in the fluid ounces field.
- Choose the unit system: US fluid ounces or UK fluid ounces.
- The converter applies the exact factor for the selected system.
- The opposite field updates instantly as you type.
- Click "Swap" to reverse the direction, or "Clear" to reset.
Use cases
- Convert engine or pump displacement specs from in³ to fl oz.
- Scale cooking or beverage recipes between unit systems.
- Verify container or bottle volumes for packaging design.
- Cross-check fluid capacity in automotive or marine parts catalogs.
- Convert laboratory glassware volumes for experiment setup.
Frequently Asked Questions
Last updated: 2026-09-19 ·
Reviewed by Nham Vu