How many US cups are in 1 imperial cup?

1 imperial cup equals 1.20095 cup.

How do I convert US cups back to imperial cups?

Use the reverse converter: 1 US cup equals 0.832674 imp cup.

Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.

To convert imperial cups to US cups, multiply the value by 1.20094993.

cup = imp cup × 1.20094993

25 imp cup × 1.20094993 = 30.02 cup

Note: "cup" here means the US cup (about 236.6 mL). Metric cups (250 mL), imperial cups and US/UK fluid ounces are listed as separate units.

Imperial Cup (imp cup): The old British cup of 10 imperial fluid ounces (284.130625 mL).
US Cup (cup): The US customary cup (about 236.588 mL), the default "cup" in American recipes.

How do I convert imperial cups to US cups?: To convert imperial cups to US cups, multiply the value by 1.20094993.
How many US cups are in 1 imperial cup?: 1 imperial cup equals 1.20095 cup.
How many US cups are in 10 imperial cups?: 10 imp cup equals 12.0095 cup.
How do I convert US cups back to imperial cups?: Use the reverse converter: 1 US cup equals 0.832674 imp cup.
Is this converter accurate?: Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.