teaspoons to cups | Exact Decimal + Formula
1 US Teaspoon = 0.020833 US Cup
One US cup equals exactly 48 US teaspoons — a fixed ratio you can memorize. Real-world use: small ingredient amounts and seasoning in recipes. This page expresses those values in US cups, which is used for US recipes for flour, sugar, liquids, and other ingredients. Use the calculator above, then check the reference table for common values from 0.001 to 1000.
About US Teaspoon and US Cup
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.
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.
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Formula
cup = tsp × 0.020833333
To convert US Teaspoon to US Cup, use the formula displayed above.
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US Teaspoon to US Cup: Quick Reference Table
| US Teaspoon | US Cup (Decimal) | Fraction |
|---|---|---|
| 0.001 tsp | 0.000021 cup | - |
| 0.01 tsp | 0.000208 cup | - |
| 0.1 tsp | 0.002083 cup | - |
| 0.5 tsp | 0.010417 cup | - |
| 1 tsp | 0.020833 cup | - |
| 2 tsp | 0.041667 cup | - |
| 5 tsp | 0.104167 cup | - |
| 10 tsp | 0.208333 cup | - |
| 25 tsp | 0.520833 cup | - |
| 50 tsp | 1.041667 cup | - |
| 100 tsp | 2.083333 cup | - |
| 250 tsp | 5.208333 cup | - |
| 500 tsp | 10.416667 cup | - |
| 1000 tsp | 20.833333 cup | - |
tsp to cup Formula and Examples
Direct Formula
cup = tsp × 0.020833333 Inverse Formula
tsp = cup × 48 Mental Math Shortcut
Divide the value by roughly 48 to quickly estimate the converted result.
Common US Teaspoon to US Cup Calculations
- 5 tsp = 0.104167 cup
- 10 tsp = 0.208333 cup
- 50 tsp = 1.041667 cup
- 100 tsp = 2.083333 cup
- 500 tsp = 10.416667 cup
Precision & Practical Use
For example, 10 tsp = 0.208333 cup — roughly fractional unit measurement.
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 Teaspoon to US Cup
How many us cups are in one us teaspoon?
One US Teaspoon (tsp) equals 0.020833 US Cup (cup). To convert us teaspoons to us cups, multiply the us teaspoon value by 0.020833.
How do I convert US Teaspoon to US Cup?
Multiply your us teaspoon value by 0.020833 to get the result in US Cup: cup = tsp × 0.020833. For example, 5 tsp = 0.104167 cup.
What is the formula for converting tsp to cup?
The conversion formula is cup = tsp × 0.020833. 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 tsp to cup?
Divide the value by roughly 48 to quickly estimate the converted result.
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