100 milliliters to US cups
0.423 cup
100 mL = 0.423 cup.
US cups
0.423cup
100 mL = 0.423 cup
In short
How many US cups is 100 milliliters?
100 mL = 0.423 cup. 1 milliliter = 0.004227 US cups, so the working is 100 × 0.004227 = 0.423.
The working
The factor below is an exact definition rather than a measurement, so nothing is approximated in the arithmetic. The only rounding on this page happens where a number is displayed.
1 milliliter = 0.004227 US cups 100 × 0.004227 = 0.423
How much precision do you need?
Each row is the same answer cut at a different number of decimals, with what that choice costs you. Pick the shortest row whose error is smaller than whatever you are measuring with.
| Rounded to | Answer (cup) | Off by |
|---|---|---|
| Whole number | 0 | −0.42268 |
| 1 decimal | 0.4 | −0.02268 |
| 2 decimals | 0.42 | −0.00268 |
Round trip: take 0.423 cup back the other way and you land on 100.0768 mL — a drift of 0.0768 mL. That gap is the rounding, not the conversion.
Frequently asked questions
What is 100 milliliters in US cups?
100 milliliters is 0.423 US cups. 1 milliliter = 0.004227 US cups, so the working is 100 × 0.004227 = 0.423.
How accurate is 0.423 cup?
Rounding to 0.423 cup and converting straight back gives 100.0768 mL, a drift of 0.0768 mL from the 100 you started with. The factor itself is exact; every bit of that difference comes from the rounding, not the conversion.
Nearby values
Any value at all
Milliliters to Cups Converter
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