Aisha K.
Mar 12, 2026
Clean layout and the results update instantly. Exactly what I needed for a quick planning check.
Unit Converters
US Legal Cups to Milliliters Converter (240 mL)
milliliters = US legal cups × 240.
US nutrition labels define a cup as 240 mL. That is a legal rounding of the customary 236.588 mL cup. FDA serving math uses 240. Grandma’s Pyrex may still be closer to 236.6. Know which dictionary the label used.
US legal cups
legal cup → mL
240 mL
1 legal cup = 240 mL. 4 legal cups = 960 mL (a “quart” on a label, not 946.35 mL customary).
- You typed
- 1 legal cup
- One mL is
- 0 legal cup
- How it’s calculated
- milliliters = US legal cups × 240.
Plain-English guide
Terms & how it works
Confused by a field? Read the short definitions here while you use the tool.
US legal cups
The “US legal cups” value used in this tool’s formula. Adjust it to see results update live.
How this calculator works
US nutrition labels define a cup as 240 mL. That is a legal rounding of the customary 236.588 mL cup. FDA serving math uses 240. Grandma’s Pyrex may still be closer to 236.6. Know which dictionary the label used. milliliters = US legal cups × 240. Example: 1 legal cup = 240 mL. 4 legal cups = 960 mL (a “quart” on a label, not 946.35 mL customary).
milliliters = US legal cups × 240.
Example: 1 legal cup = 240 mL. 4 legal cups = 960 mL (a “quart” on a label, not 946.35 mL customary).
When to use this US Legal Cups to Milliliters
Common use cases
- US nutrition labels define a cup as 240 mL. That is a legal rounding of the customary 236.588 mL cup. FDA serving math uses 240. Grandma’s Pyrex may still be closer to 236.6. Know which dictionary the label used.
- Sanity-check with this case: 1 legal cup = 240 mL. 4 legal cups = 960 mL (a “quart” on a label, not 946.35 mL customary).
- The relationship is: milliliters = US legal cups × 240.
Localized examples
- Unit Converters: the example on this page uses the same formula as the widget.
What you get
- Fields: US legal cups
- milliliters = US legal cups × 240.
- Example on the page: 1 legal cup = 240 mL. 4 legal cups = 960 mL (a “quart” on a label, not 946.35 mL customary).
How to Convert US Legal Cups to Milliliters Step-by-Step
- 1Enter US legal cups. Use the values you have, not a catalog average, unless that is all you know.
- 2milliliters = US legal cups × 240.
- 3Worked case: 1 legal cup = 240 mL. 4 legal cups = 960 mL (a “quart” on a label, not 946.35 mL customary).
- 4Check which dictionary the other person is using — US or UK, decimal or 1,024 — then trust the number.
Governing formula
milliliters = US legal cups × 240.
1 legal cup = 240 mL. 4 legal cups = 960 mL (a “quart” on a label, not 946.35 mL customary).
Example: set US legal cups = 1, then read the result.
Variable definitions
- value
US legal cups
The “US legal cups” field. Default 1; typical range 0–1000000000.
- The conversion (milliliters = US legal cups × 240.) does not pick US vs UK gallons, SI vs binary megabytes, or Mach at altitude for you. Read the footnote on the page.
- Nothing here is uploaded for the calculation itself.
Frequently Asked Questions
FDA 21 CFR. Easier arithmetic than 236.588. It is a labeling cup, not a measuring-cup guarantee.
Related calculators
Unit Converters
- Metric Cups to MillilitersA metric cup is 250 mL. Australian and NZ recipes usually mean this. It is not the US customary cup (~236.588 mL) and not the US legal cup (240 mL) used on nutrition labels. If the cookbook is from Melbourne, start here.
- Cups to MillilitersUS customary cup is 240 mL in nutrition labels and 236.6 mL in the true fluid-cup (8 fl oz). This page uses the 8 fl oz cup (236.6 mL). A “metric cup” in Australia is 250 mL. If the cake falls, check which cup the author owned.
- Milk Cups to MillilitersMilk and water weigh almost the same in a measuring cup. A US cup is 236.6 mL (8 fl oz). Nutrition labels round to 240 mL. Whole milk is slightly denser; it will not save a sauce that was 20 mL short.
- Brown Sugar Cups to GramsPacked light or dark brown sugar is about 220 g per US cup. “Packed” means you pressed it. A loose scoop can miss 30 g and flatten cookies. Light and dark weigh nearly the same; molasses is the flavor, not the scale.
- Cocoa Powder Cups to GramsUnsweetened cocoa powder is fluffy. A US cup is about 85 g sifted/spooned. Dutch-process vs natural does not change the gram target as much as how hard you tap the cup.
- Dry Rice Cups to CookedWhite long-grain usually triples: 1 dry cup → about 3 cooked. Brown rice is closer to 2–2½. Risotto soaks differently. This is a pot estimate, not a lab yield.
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4.8
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4 reviews
Daniel R.
Feb 28, 2026
Very usable on mobile. Would love a save/export option later, but the math feels solid.
Priya S.
Feb 3, 2026
The FAQ section answered my questions before I even had to search. Smooth dark mode too.
Marcus L.
Jan 19, 2026
Simple inputs, clear outputs. This replaced three bookmarks I used to juggle.
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