Cubic Inches to Fluid Ounces Converter
Convert cubic inches to US fluid ounces (and UK fluid ounces) instantly with common volume reference points.
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: 2026-06-09 ·
Reviewed by Nham Vu