Cups to Teaspoons
An instant cups-to-teaspoons converter, with the formula and a reference table below.
| Cups | Teaspoons |
|---|---|
| 1 cup | 48 tsp |
| 2 cup | 96 tsp |
| 3 cup | 144 tsp |
| 5 cup | 240 tsp |
| 10 cup | 480 tsp |
| 25 cup | 1200 tsp |
| 50 cup | 2400 tsp |
| 100 cup | 4800 tsp |
How to use
- Enter a value in the Cups field.
- The Teaspoons figure appears immediately — no button to press.
- Typing in the Teaspoons field converts back to Cups the same way.
- Use the reference table for the values that come up most often.
Cups to Teaspoons formula
To convert cups to teaspoons, multiply by 48.
tsp = cup × 48
Put another way, one cup is exactly 48 teaspoons.
Why this factor: the cup and the teaspoon are both defined against the liter, so dividing one definition by the other gives 48 directly. Both definitions are set out in full below.
To go the other way, divide by 48 — or use the Teaspoons to Cups converter, which is the same calculation reversed.
Worked example
Take 8 cup and multiply by the factor 48: the result is 384 tsp.
8 cup × 48 = 384 tsp
The converter above does this for any value you type, in either direction.
What is a cup?
A US customary cup is the standard cooking volume measure in American recipes.
Definition: Exactly one sixteenth of a US liquid gallon, so exactly 236.5882365 milliliters.
Where it is used: American recipes and baking, where dry and liquid ingredients alike are measured by cup.
Worth knowing: Nutrition labels use the US *legal* cup of exactly 240 mL, and a metric cup is 250 mL — three slightly different cups are in circulation.
What is a teaspoon?
A US teaspoon is the smallest common cooking measure, one third of a tablespoon.
Definition: Exactly one sixth of a US fluid ounce, so about 4.9289 milliliters — conventionally rounded to 5 mL.
Where it is used: Recipes, spice and leavening quantities, and liquid medicine doses.
Cups vs Teaspoons
The cup and the teaspoon belong to the same family of units, so converting between them is usually a matter of shifting a decimal point or applying a small whole-number factor.
Frequently asked questions
How many teaspoons are in a cup?
One cup equals 48 teaspoons.
What is the formula to convert cups to teaspoons?
Multiply the number of cups by 48. To reverse it, divide by 48 instead.
How do I convert teaspoons back to cups?
Divide by 48, which is the same as multiplying by 0.0208333333.
How many teaspoons are in 10 cups?
10 cup works out to 480 tsp.
Is there anything to watch out for with cups?
Nutrition labels use the US *legal* cup of exactly 240 mL, and a metric cup is 250 mL — three slightly different cups are in circulation.
How is the cup defined?
Exactly one sixteenth of a US liquid gallon, so exactly 236.5882365 milliliters.