Teaspoons to US cups
US cups = teaspoons × 0.02083333
Reverse: US cups to teaspoons
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How to convert teaspoons to US cups
One teaspoon is 0.02083333 US cups, so multiply the number of teaspoons by 0.02083333. For example, 20 teaspoons is 20 × 0.02083333 = 0.41666667 US cups. To go back, divide by the same number, or multiply by 48.
Quick estimate
Multiplying by about 0.02 gets within 4.0% of the exact answer, which is enough to check that a result makes sense.
Where it comes up
Volume conversions come up in recipes, fuel economy, drink and bottle sizes, garden and pool water, and engine sizes.
| teaspoons | US cups |
|---|---|
| 1 tsp | 0.02083333 cup |
| 2 tsp | 0.04166667 cup |
| 3 tsp | 0.0625 cup |
| 4 tsp | 0.08333333 cup |
| 5 tsp | 0.10416667 cup |
| 6 tsp | 0.125 cup |
| 7 tsp | 0.14583333 cup |
| 8 tsp | 0.16666667 cup |
| 9 tsp | 0.1875 cup |
| 10 tsp | 0.20833333 cup |
| 11 tsp | 0.22916667 cup |
| 12 tsp | 0.25 cup |
| 13 tsp | 0.27083333 cup |
| 14 tsp | 0.29166667 cup |
| 15 tsp | 0.3125 cup |
| 16 tsp | 0.33333333 cup |
| 17 tsp | 0.35416667 cup |
| 18 tsp | 0.375 cup |
| 19 tsp | 0.39583333 cup |
| 20 tsp | 0.41666667 cup |
| 25 tsp | 0.52083333 cup |
| 30 tsp | 0.625 cup |
| 40 tsp | 0.83333333 cup |
| 50 tsp | 1.041667 cup |
| 60 tsp | 1.25 cup |
| 70 tsp | 1.458333 cup |
| 75 tsp | 1.5625 cup |
| 80 tsp | 1.666667 cup |
| 90 tsp | 1.875 cup |
| 100 tsp | 2.083333 cup |
| 120 tsp | 2.5 cup |
| 150 tsp | 3.125 cup |
| 200 tsp | 4.166667 cup |
| 250 tsp | 5.208333 cup |
| 300 tsp | 6.25 cup |
| 400 tsp | 8.333333 cup |
| 500 tsp | 10.416667 cup |
| 750 tsp | 15.625 cup |
| 1,000 tsp | 20.833333 cup |
| 1,500 tsp | 31.25 cup |
| 2,000 tsp | 41.666667 cup |
| 5,000 tsp | 104.166667 cup |
| 10,000 tsp | 208.333333 cup |
Questions
How many US cups are in a teaspoon?
0.02083333 US cups.
How do I convert teaspoons to US cups in a spreadsheet?
Put the value in A1 and type =A1*0.02083333, then fill the formula down the column.
Are the values in the table exact?
They are calculated from the exact definitions of the units and rounded only for display. Open any row for the full working.