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⚡ Japanese Cups to US Teaspoons: the quick answer
1 cup-jp = 40.5768 tsp
1 Japanese cup equals 40.5768 US teaspoons
To convert Japanese cups to US teaspoons, multiply the value by 40.5768.
To go the other way, multiply US teaspoons by 0.0246446 to get Japanese cups.
↔ Convert US teaspoons to Japanese cups instead
🧮 Formula
Every unit here is defined by its volume in cubic meters, so the conversion factor is (cubic meters per Japanese cup) ÷ (cubic meters per US teaspoon).
📊 Japanese Cups to US Teaspoons conversion table
✏️ Worked examples
Convert 25 Japanese cups to US teaspoons
25 cup-jp × 40.5768 = 1,014.42 tsp
Try this example →
Convert 250 Japanese cups to US teaspoons
250 cup-jp × 40.5768 = 10,144.2 tsp
Try this example →
📘 About these units
Japanese cup (cup-jp). The Japanese measuring cup (カップ) is 200 mL. Used in: Asia — Japan.
US teaspoon (tsp). A US teaspoon is 4.9289 mL (1/3 tablespoon).
❓ Frequently asked questions
How many US teaspoons are in one Japanese cup?
There are 40.5768 US teaspoons in one Japanese cup.
How do I convert Japanese cups to US teaspoons?
Multiply the number of Japanese cups by 40.5768. For example, 10 Japanese cups equal 405.768 US teaspoons.
How many Japanese cups are in one US teaspoon?
One US teaspoon equals 0.0246446 Japanese cups.
🔗 More volume conversions
All volume units →