Free · Volume and weight converters ⚖️
Milliliters & Exact US Customary Cups Converter
Convert milliliters & exact us customary cups with explained unit conventions and editable results.
- Formula & worked example
- Private in your browser
- No signup
Calculator inputs
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How to use this calculator
- Enter the known values in the units shown. Results update as you type.
- Where results are editable, change one to solve backwards. Lock a value to hold it fixed.
- Use the worked example to check the method. Reset restores the starting fields.
Private by default
Inputs and results stay in this browser tab. Bookify does not upload or store the values you enter.
Formula and method
236.5882365 mL = 1 US customary cup. The cup is one sixteenth of a US liquid gallon. It differs from the 240 mL US legal nutrition cup and the 250 mL metric cup.
236.5882365 mL = 1 US customary cup
Worked example
Enter these known values and leave the other values blank.
- Milliliters
- 236.5882365
- US customary cups
- 1
Assumptions and limitations
- The cup is one sixteenth of a US liquid gallon. It differs from the 240 mL US legal nutrition cup and the 250 mL metric cup.
- Changing a unit preserves the underlying quantity. Check the selected unit before entering a new number; rounded display digits do not improve measurement accuracy.
Common questions
Which unit definition does this tool use?
The cup is one sixteenth of a US liquid gallon. It differs from the 240 mL US legal nutrition cup and the 250 mL metric cup.
Can I calculate in reverse?
Yes. Leave the original input blank and enter the known result. The inverse calculation uses the same unit definition.
References
The cup is explicitly the US customary cup of 236.5882365 milliliters, replacing the captured rounded 237-milliliter factor.
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