Japanese cups to US cups
Type a value in Japanese cups and get the result in US cups, calculated exactly.
1 Japanese cups ≈ 0.8453505675 US cups
Precision
Exact factorRounded for display to about 10 significant digits.
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Formula
cup (US) = cup (JP) ÷ 1.1829411825
To convert Japanese cups to US cups, divide the value by 1.1829411825.
Worked examples
- 1 cup (JP) ÷ 1.1829411825 ≈ 0.8453505675 cup (US)
- 100 cup (JP) ÷ 1.1829411825 ≈ 84.53505675 cup (US)
- 50 cup (JP) ÷ 1.1829411825 ≈ 42.26752838 cup (US)
This factor is exact by definition.
Conversion table
| Japanese cups (cup (JP)) | US cups (cup (US)) |
|---|---|
| 0.25 | ≈ 0.2113376 |
| 0.5 | ≈ 0.4226753 |
| 0.75 | ≈ 0.6340129 |
| 1 | ≈ 0.8453506 |
| 1.5 | ≈ 1.268026 |
| 2 | ≈ 1.690701 |
| 2.5 | ≈ 2.113376 |
| 3 | ≈ 2.536052 |
| 4 | ≈ 3.381402 |
| 5 | ≈ 4.226753 |
| 6 | ≈ 5.072103 |
| 8 | ≈ 6.762805 |
| 10 | ≈ 8.453506 |
Values marked ≈ are rounded; the rest are exact.
Reverse table: US cups to Japanese cups
| US cups (cup (US)) | Japanese cups (cup (JP)) |
|---|---|
| 0.25 | 0.295735295625 |
| 0.5 | 0.59147059125 |
| 0.75 | 0.887205886875 |
| 1 | 1.1829411825 |
| 1.5 | 1.77441177375 |
| 2 | 2.365882365 |
| 2.5 | 2.95735295625 |
| 3 | 3.5488235475 |
| 4 | 4.73176473 |
| 5 | 5.9147059125 |
| 6 | 7.097647095 |
| 8 | 9.46352946 |
| 10 | 11.829411825 |
Unit definitions
- Japanese cups cup (JP)
- Exactly 200 mL, the standard Japanese measuring cup.
- US cups cup (US)
- The US customary cup: one sixteenth of a US gallon, exactly 236.5882365 mL.
Questions people ask
Japanese cups to US cups: what is the conversion factor?
One cup (JP) is ≈ 0.8453505675 cup (US).
How do I convert Japanese cups to US cups?
Use the formula above. For example, 100 cup (JP) = ≈ 84.53505675 cup (US).
Is the conversion exact?
Yes. Both units have exact definitions, so the factor is exact; a result is only rounded when its decimals never end.
Factors checked 19 October 2026.