cups to teaspoons | Exact Decimal + Formula
1 US Cup = 48 US Teaspoon
One US cup equals exactly 48 US teaspoons — a fixed ratio you can memorize. Real-world use: US recipes for flour, sugar, liquids, and other ingredients. This page expresses those values in US teaspoons, which is used for small ingredient amounts and seasoning in recipes. Use the calculator above, then check the reference table for common values from 0.001 to 1000.
About US Cup and US Teaspoon
US Cup (cup)
A US cooking cup is 236.588 milliliters, the standard volume measure in American recipes.
Where it's used: US recipes for flour, sugar, liquids, and other ingredients.
US Teaspoon (tsp)
A US teaspoon is 1/48 of a cup, about 4.93 milliliters.
Where it's used: Small ingredient amounts and seasoning in recipes.
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Cooking (Volume) Converter
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Formula
tsp = cup × 48
To convert US Cup to US Teaspoon, use the formula displayed above.
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US Cup to US Teaspoon: Quick Reference Table
| US Cup | US Teaspoon (Decimal) | Fraction |
|---|---|---|
| 0.001 cup | 0.048 tsp | - |
| 0.01 cup | 0.48 tsp | - |
| 0.1 cup | 4.8 tsp | - |
| 0.5 cup | 24 tsp | - |
| 1 cup | 48 tsp | - |
| 2 cup | 96 tsp | - |
| 5 cup | 240 tsp | - |
| 10 cup | 480 tsp | - |
| 25 cup | 1200 tsp | - |
| 50 cup | 2400 tsp | - |
| 100 cup | 4800 tsp | - |
| 250 cup | 12000 tsp | - |
| 500 cup | 24000 tsp | - |
| 1000 cup | 48000 tsp | - |
cup to tsp Formula and Examples
Direct Formula
tsp = cup × 48 Inverse Formula
cup = tsp × 0.020833 Mental Math Shortcut
Multiply the value by roughly 48 to calculate the equivalent amount in your head.
Common US Cup to US Teaspoon Calculations
- 5 cup = 240 tsp
- 10 cup = 480 tsp
- 50 cup = 2400 tsp
- 100 cup = 4800 tsp
- 500 cup = 24000 tsp
Precision & Practical Use
For example, 10 cup = 480 tsp — roughly multiple unit increments.
Results are computed to up to 9 decimal places. Round to the precision of your measuring instrument — for most cooking (volume) applications, 2–3 significant figures are plenty.
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How to Convert US Cup to US Teaspoon
How many us teaspoons are in one us cup?
One US Cup (cup) equals 48 US Teaspoon (tsp). To convert us cups to us teaspoons, multiply the us cup value by 48.
How do I convert US Cup to US Teaspoon?
Multiply your us cup value by 48 to get the result in US Teaspoon: tsp = cup × 48. For example, 5 cup = 240 tsp.
What is the formula for converting cup to tsp?
The conversion formula is tsp = cup × 48. Use the calculator above for any value, and see the reference table below for common inputs from 0.001 to 1000.
Is there a quick mental estimate for cup to tsp?
Multiply the value by roughly 48 to calculate the equivalent amount in your head.
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