How do I convert cups to teaspoons?
Type a value in either box, and the answer shows it in the other unit as you type.
- Teaspoons (tsp)
- 48
1 cup = 48 tsp.
Teaspoons (tsp): 48. 1 cup = 48 tsp.
Teaspoons (tsp) by cups (cup)
How to calculate
Converts cups (cup) to teaspoons (tsp) and back, with the exact unit definitions.
Example with the default inputs (Cups (cup) 1): 1 cup = 48 tsp.
Formula: tsp = cup × 48
- 1 cup = 48 teaspoons, from the exact definitions in NIST SP 811.
- Cups, ounces, tablespoons, teaspoons, pints, quarts, and gallons are US customary units: 1 US cup is 8 US fluid ounces.
- Exact on the typed decimals: at most 6 decimal places (6 significant digits below 0.0001), rounded half up.
Worked examples
Each example is checked against the calculator on every build.
- Cups (cup) 1 gives Teaspoons (tsp) 48.Source: Exact unit definitions in NIST SP 811 (2008), Appendix B.8
- Cups (cup) 0.25 gives Teaspoons (tsp) 12.Source: Exact unit definitions in NIST SP 811 (2008), Appendix B.8
- Teaspoons (tsp) 12 gives Cups (cup) 0.25.Source: Exact unit definitions in NIST SP 811 (2008), Appendix B.8
Other questions people ask
How many teaspoons are in a cup?
1 cup is 48 teaspoons, from the exact unit definitions (NIST SP 811).
How do I convert cups to teaspoons?
Multiply by 48: tsp = cup × 48. For example, 1 cup × 48 = 48 tsp.
How do I convert teaspoons back to cups?
Multiply by 0.020833, or type the teaspoons into the second box and the converter works it out. 1 teaspoon is 0.020833 cups.
How many teaspoons are in 1/4 cup?
12: 0.25 × 48. In 1/3 cup there are 16, and in 1/2 cup 24.
How many teaspoons are in a tablespoon?
3. A US cup is 16 tablespoons, so it is 16 × 3 = 48 teaspoons.
Are metric teaspoons different?
A little. A US teaspoon is 4.928922 mL, and a metric teaspoon is 5 mL (NIST). So a US cup is 48 US teaspoons, or about 47.3 metric teaspoons.