How many fluid ounces are in a quart?

There are exactly 32 US fluid ounces in 1 US liquid quart. In the UK imperial system, 1 quart equals exactly 40 imperial fluid ounces. The difference exists because a US fluid ounce (29.57 mL) is slightly larger than a UK fluid ounce (28.41 mL), and the quart sizes also differ.

What is the difference between a US quart and a UK quart?

A US liquid quart is approximately 946 mL, while a UK (imperial) quart is approximately 1,136 mL — about 20% larger. Always check which system a recipe or product label uses before converting.

Is a US fluid ounce the same as a UK fluid ounce?

No. A US fluid ounce is approximately 29.57 mL, while a UK (imperial) fluid ounce is approximately 28.41 mL. The difference is small but meaningful for precise recipes and lab measurements.

How do I convert quarts to fluid ounces without a calculator?

For US units, multiply quarts by 32 (1 qt = 32 fl oz). For UK imperial units, multiply quarts by 40 (1 qt = 40 fl oz). These whole-number ratios make mental math straightforward for common kitchen quantities.

Can I convert fractional quarts?

Yes. The converter accepts any decimal value — enter 0.5 for a half quart, 1.25 for one and a quarter quarts, and so on. The result updates instantly as you type.

Quarts to Fluid Ounces Converter

Name: Quarts to Fluid Ounces Converter
Availability: InStock
Author: Nham Vu

Enter a value in quarts and get the exact fluid ounce equivalent for US customary or UK imperial units.

Enter Volume in Quarts

US Customary UK Imperial

Quick values

Conversion Results

Enter a quart value to see results.

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Quick Reference — US Customary

Quarts (qt)	Fluid Oz (fl oz)	Pints (pt)	Liters (L)
0.25	8	0.5	0.237
0.5	16	1	0.473
1	32	2	0.946
2	64	4	1.893
4	128	8	3.785
8	256	16	7.571

Summary

Enter a value in quarts and get the exact fluid ounce equivalent for US customary or UK imperial units.

How it works

Enter a volume in quarts in the input field.
The converter instantly calculates the equivalent in fluid ounces.
Toggle between US customary and UK imperial systems with the switch.
Read the full breakdown showing pints, cups, gallons, and milliliters.
Use the quick-value presets for common kitchen and bulk measurements.
Copy any individual result to the clipboard with one click.

Use cases

Scale a recipe that lists liquids in quarts when your measuring cup shows fluid ounces.
Convert a US quart measurement to UK imperial fluid ounces for a British recipe.
Verify container capacity when buying beverages, paint, or motor oil.
Help students with math or science homework on volume conversions.
Confirm liquid medication or supplement volumes across different unit systems.
Convert cooking measurements quickly while prepping in the kitchen.

Frequently Asked Questions

Last updated: 2026-06-11 · Reviewed by Nham Vu