The teaspoon
The US teaspoon equals 1/3 of a US tablespoon, or about 4.929 mL. The metric teaspoon (used on most non-US nutrition labels) is exactly 5 mL — close enough that you can substitute freely in cooking but not in precise dosing.
Teaspoons to US cups Converter
1 tsp = 0.0208333 cup (teaspoon → US cup)
1 tsp = 0.0208333 cup
1 teaspoon equals 0.0208333 US cups. To convert teaspoons to US cups, multiply the teaspoon value by 0.0208333. For quick reference: 1 tsp = 0.0208333 cup, 5 tsp = 0.104167 cup, 10 tsp = 0.208333 cup, 100 tsp = 2.08333 cup.
Formula
US cups = Teaspoons × 0.0208333Quick
When to use teaspoons → US cups
US teaspoons to US cups divides by 48 (0.00492892159375 × 48 = 0.2365882365 L exactly, via 3 tsp per tbsp and 16 tbsp per cup). Twenty-four teaspoons are half a cup; 16 tsp make the awkward third of a cup that US cookbooks express as 5 tbsp + 1 tsp. Scaling spice-heavy recipes up from teaspoons to cup measures is the typical use. On the metric ladder the numbers shift — 50 of the 5 mL teaspoons fill a 250 mL metric cup.
Baking recipes that call for very small amounts of a strong ingredient (vanilla, baking soda, spice) sometimes need cross-checking against the cup total for scaling purposes. 48 tsp is exactly 1 cup; 12 tsp is 0.25 cup; 24 tsp is 0.5 cup. This mostly matters when a recipe developer wants to verify that summing every teaspoon-measured ingredient doesn't exceed the total liquid volume the recipe's cup measurements imply.
How to convert teaspoons to US cups
Take your value
Start with your value in teaspoons.
Multiply by 0.0208333
Multiply the teaspoon value by 0.0208333. This is the exact conversion factor from teaspoons to US cups.
Read the result
The product is your value in US cups. For example, 5 tsp × 0.0208333 = 0.104167 cup.
Conversion formula
The exact factor from teaspoons to US cups is 0.0208333.
US cups = Teaspoons × 0.0208333
Teaspoons to US cups conversion table
Fifty common reference values, hand-picked for skim utility. Use the calculator above for any value not listed.
| Teaspoons (tsp) | US cups (cup) |
|---|---|
| 0.1 tsp | 0.0020833 cup |
| 0.25 tsp | 0.0052083 cup |
| 0.5 tsp | 0.010417 cup |
| 1 tsp | 0.020833 cup |
| 1.5 tsp | 0.03125 cup |
| 2 tsp | 0.041667 cup |
| 2.5 tsp | 0.052083 cup |
| 3 tsp | 0.0625 cup |
| 4 tsp | 0.083333 cup |
| 5 tsp | 0.10417 cup |
| 6 tsp | 0.125 cup |
| 7 tsp | 0.14583 cup |
| 8 tsp | 0.16667 cup |
| 9 tsp | 0.1875 cup |
| 10 tsp | 0.20833 cup |
| 12 tsp | 0.25 cup |
| 15 tsp | 0.3125 cup |
| 20 tsp | 0.41667 cup |
| 25 tsp | 0.52083 cup |
| 30 tsp | 0.625 cup |
| 40 tsp | 0.83333 cup |
| 50 tsp | 1.0417 cup |
| 60 tsp | 1.25 cup |
| 75 tsp | 1.5625 cup |
| 100 tsp | 2.0833 cup |
| 125 tsp | 2.6042 cup |
| 150 tsp | 3.125 cup |
| 200 tsp | 4.1667 cup |
| 250 tsp | 5.2083 cup |
| 300 tsp | 6.25 cup |
| 400 tsp | 8.3333 cup |
| 500 tsp | 10.417 cup |
| 600 tsp | 12.5 cup |
| 750 tsp | 15.625 cup |
| 1000 tsp | 20.833 cup |
| 1500 tsp | 31.25 cup |
| 2000 tsp | 41.667 cup |
| 2500 tsp | 52.083 cup |
| 3000 tsp | 62.5 cup |
| 4000 tsp | 83.333 cup |
| 5000 tsp | 104.17 cup |
| 7500 tsp | 156.25 cup |
| 10000 tsp | 208.33 cup |
| 15000 tsp | 312.5 cup |
| 20000 tsp | 416.67 cup |
| 25000 tsp | 520.83 cup |
| 30000 tsp | 625 cup |
| 40000 tsp | 833.33 cup |
| 50000 tsp | 1041.7 cup |
| 100000 tsp | 2083.3 cup |
Real-world reference
A standard pinch of salt is about 1/8 tsp. Most spice measurements in recipes are in teaspoons. In US cups, that gives you: 1 tsp = 0.0208333 cup, 10 tsp = 0.208333 cup, 100 tsp = 2.08333 cup.
Frequently asked questions
- How many US cups are in 1 teaspoon?
- 1 teaspoon equals 0.0208333 US cups.
- How do I convert teaspoons to US cups?
- Multiply the teaspoon value by 0.0208333. So x tsp × 0.0208333 = the equivalent in cup.
- What is 5 teaspoons in US cups?
- 5 teaspoons equals 0.104167 US cups.
- What is 10 teaspoons in US cups?
- 10 teaspoons equals 0.208333 US cups.
- What is 100 teaspoons in US cups?
- 100 teaspoons equals 2.08333 US cups.
- How do I convert back from US cups to teaspoons?
- Multiply the US cup value by 48. For example, 1 cup = 48 tsp.
- Is the teaspoon bigger than the US cup?
- No. 1 teaspoon is smaller than 1 US cup. It takes 48 teaspoons to equal 1 US cup.
- Are these conversion factors exact?
- The factor is derived directly from the SI definitions of teaspoon and US cup; the displayed value is rounded for readability, and the browser computes using IEEE 754 double-precision arithmetic.
About the teaspoon and the US cup
The US cup
The US legal cup, as used in nutrition labels, equals exactly 240 mL; the US customary cup, used in recipes, equals 236.5882365 mL (half a US liquid pint, or 8 US fluid ounces). Convertitive uses the customary value, which matches how most US cookbooks specify quantities. UK and Australian metric cups are 250 mL — yet another small but consequential difference.
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