Volume converter
Converting teaspoons to cups (us) is a small, specific task, but getting it wrong by even a rounding error can throw off a recipe, a shipping quote, a construction cut list, or a homework answer. This page runs a live Teaspoons to Cups (US) converter — type a number in tsp and get the exact cup equivalent instantly, calculated with the standard conversion factor rather than an approximation. One tsp equals 0.02083335 cup, and the calculator below scales that ratio to any amount you enter.
To convert a value from teaspoons to cups (us), multiply the number of tsp by 0.02083335. That figure comes from expressing both units against the same reference — in this case, volume are compared through a common volume base unit — so the ratio holds no matter how large or small the input is.
Common tsp amounts and their cup equivalents, rounded to six decimal places for accuracy:
Volume conversions come up constantly outside of a classroom. Recipes written for a US audience use cups and tablespoons while international ones use metric measurements; travel and navigation mix miles, kilometers, and nautical units depending on the country and mode of transport; and technical fields like engineering, medicine, and manufacturing often require converting between systems to match a spec sheet, a prescription, or a purchase order.
Manual conversion is where mistakes creep in — misplacing a decimal, using an outdated or rounded factor, or mixing up which unit is larger. Because this converter applies the exact multiplier every time, the result for teaspoons to cups (us) is consistent whether you're converting a single small number or a large batch of values one at a time.
1 tsp equals 0.02083335 cup. Multiply any tsp value by this factor to get cup.
It uses the standard defined conversion factor for teaspoons and cups (us), so results are precise to the rounding shown, not a rough estimate.
Yes — use the swap control in the calculator to reverse the direction and convert cups (us) into teaspoons instead.
No. The calculation runs locally in your browser using JavaScript, so nothing you type is sent anywhere.
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| Teaspoons | Cups (US) |
|---|---|
| 1 tsp | 0.020833 cup |
| 5 tsp | 0.104167 cup |
| 10 tsp | 0.208333 cup |
| 25 tsp | 0.520834 cup |
| 50 tsp | 1.041667 cup |
| 100 tsp | 2.083335 cup |
| 500 tsp | 10.416674 cup |
| 1000 tsp | 20.833347 cup |