US teaspoon to US cup Converter
1 tsp = 0.020833 cup — convert instantly with formula and table.
Enter any number above and the result updates as you type. Everything runs locally in your browser, so it is instant and private.
Quick answer: one us teaspoon equals 0.020833 US cups. So to convert US teaspoons to US cups, multiply by 0.02083333.
How to convert US teaspoons to US cups
US cups = US teaspoons × 0.0208333333
The US teaspoon is defined as exactly 4.92892159375 ml — one third of a tablespoon — and anchors small quantities in American recipes.
The US cup is half a US pint — 236.59 ml. American recipes measure almost everything in cups, which is why cup conversions are among the most searched on the web.
US teaspoon to US cup conversion table
| US teaspoon (tsp) | US cup (cup) |
|---|---|
| 0.01 tsp | 0.00020833 cup |
| 0.1 tsp | 0.002083 cup |
| 0.25 tsp | 0.005208 cup |
| 0.4 tsp | 0.008333 cup |
| 0.75 tsp | 0.015625 cup |
| 1.25 tsp | 0.026042 cup |
| 1.75 tsp | 0.036458 cup |
| 2.5 tsp | 0.052083 cup |
| 3.5 tsp | 0.072917 cup |
| 4.5 tsp | 0.09375 cup |
| 6 tsp | 0.125 cup |
| 8 tsp | 0.166667 cup |
| 10 tsp | 0.208333 cup |
| 12 tsp | 0.25 cup |
| 14 tsp | 0.291667 cup |
| 16 tsp | 0.333333 cup |
| 18 tsp | 0.375 cup |
| 20 tsp | 0.416667 cup |
| 24 tsp | 0.5 cup |
| 26 tsp | 0.541667 cup |
| 30 tsp | 0.625 cup |
| 35 tsp | 0.729167 cup |
| 45 tsp | 0.9375 cup |
| 55 tsp | 1.1458 cup |
| 65 tsp | 1.3542 cup |
| 75 tsp | 1.5625 cup |
| 85 tsp | 1.7708 cup |
| 95 tsp | 1.9792 cup |
| 110 tsp | 2.2917 cup |
| 125 tsp | 2.6042 cup |
| 175 tsp | 3.6458 cup |
| 250 tsp | 5.2083 cup |
| 350 tsp | 7.2917 cup |
| 450 tsp | 9.375 cup |
| 600 tsp | 12.5 cup |
| 750 tsp | 15.625 cup |
| 900 tsp | 18.75 cup |
| 1,500 tsp | 31.25 cup |
| 2,500 tsp | 52.0833 cup |
| 10,000 tsp | 208.3333 cup |
Need the opposite direction? Use the US cup to US teaspoon converter, or read our complete guide to volume conversions for every formula in one place.
Frequently asked questions
How many US cups are in one us teaspoon?
One us teaspoon equals 0.020833 US cups. Multiply any us teaspoon value by 0.02083333 to get US cups.
What is 10 US teaspoons in US cups?
10 US teaspoons equal 0.208333 US cups (10 × 0.020833).
Is the us teaspoon to us cup conversion exact?
The conversion factor used here (0.0208333333) is based on the internationally agreed definitions of both units, so results are exact up to rounding of the final decimal places.
Is my data stored when I use this converter?
No. The conversion runs entirely in your browser with JavaScript — nothing you type is sent to a server, logged or stored.