Fluid Ounces to Cubic Inches Converter

Summary

This converter uses exact SI-derived factors: 1 US fluid ounce = 231/128 cubic inches (exactly 1.8046875 in³), and 1 UK fluid ounce ≈ 1.7338715 cubic inches. Enter a value in either field for an instant bidirectional result. A reference table shows common volumes — shots, cups, cans, bottles — in both units so you can check your answer at a glance.

How it works

1. Enter a value in the fluid ounces field or the cubic inches field.
2. Select US fl oz or UK fl oz depending on your system.
3. The opposite field updates instantly as you type.
4. Click "Swap" to reverse direction, or "Clear" to reset both fields.
5. Scroll down to the reference table to see common container volumes.

Use cases

• Convert engine displacement or pump capacity from fl oz specs to cubic inches.
• Scale cooking or beverage recipes that mix US and metric units.
• Verify container fill volumes for packaging or product design.
• Cross-check fluid capacity listed in automotive or marine parts catalogs.
• Compare laboratory glassware sizes when setting up experiments.
• Quickly sanity-check unit conversions on homework or exam problems.

Frequently Asked Questions