Volume converter
Converting cups (us) to teaspoons 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 Cups (US) to Teaspoons converter — type a number in cup and get the exact tsp equivalent instantly, calculated with the standard conversion factor rather than an approximation. One cup equals 47.99996754 tsp, and the calculator below scales that ratio to any amount you enter.
To convert a value from cups (us) to teaspoons, multiply the number of cup by 47.99996754. 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 cup amounts and their tsp 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Manual conversion is where mistakes creep in — misplacing a decimal, using an outdated or rounded factor, or mixing up which unit is larger.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 cups (us) to teaspoons is consistent whether you're converting a single small number or a large batch of values one at a time.
1 cup equals 47.99996754 tsp. Multiply any cup value by this factor to get tsp.
It uses the standard defined conversion factor for cups (us) and teaspoons, 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 teaspoons into cups (us) instead.
No. The calculation runs locally in your browser using JavaScript, so nothing you type is sent anywhere.
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| Cups (US) | Teaspoons |
|---|---|
| 1 cup | 47.999968 tsp |
| 5 cup | 239.999838 tsp |
| 10 cup | 479.999675 tsp |
| 25 cup | 1199.999188 tsp |
| 50 cup | 2399.998377 tsp |
| 100 cup | 4799.996754 tsp |
| 500 cup | 23999.983769 tsp |
| 1000 cup | 47999.967539 tsp |