---
title: "US cups to Teaspoons — cup to tsp converter"
description: "1 US cup = 48 teaspoons. Convert US cups to teaspoons with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/cups-to-teaspoons/
site: "At One Place"
---

# US cups to teaspoons

**1 US cup in teaspoons: 1 cup = 48 tsp**

tsp = cup × 48

To convert US cups to teaspoons, multiply by 48. The table below gives the values people look up most often, and the converter works for any number.

## US cups to teaspoons table

*Common US cup values converted to teaspoons.*

| US cups | Teaspoons |
| --- | --- |
| 1 cup | 48 |
| 2 cup | 96 |
| 3 cup | 144 |
| 4 cup | 192 |
| 5 cup | 240 |
| 10 cup | 480 |
| 15 cup | 720 |
| 20 cup | 960 |
| 25 cup | 1,200 |
| 30 cup | 1,440 |
| 40 cup | 1,920 |
| 50 cup | 2,400 |
| 75 cup | 3,600 |
| 100 cup | 4,800 |
| 250 cup | 12,000 |
| 500 cup | 24,000 |
| 1,000 cup | 48,000 |

## How the conversion works

The relationship is tsp = cup × 48. Both units measure volume, so the conversion is a fixed factor that never changes. The figure is exact rather than approximate: since the international yard and pound agreement of 1959, an inch is defined as exactly 25.4 millimetres and a pound as exactly 0.45359237 kilograms, and every other imperial and US customary unit here is derived from those two.

> US cup: US legal cup is 240 mL; the customary cup used here is 236.588 mL.

## Common questions

### How many teaspoons are in one US cup?

One US cup equals 48 teaspoons. tsp = cup × 48.

### How do you convert US cups to teaspoons?

Use tsp = cup × 48. So 10 cup is 480 tsp.

### How many US cups are in one teaspoon?

One teaspoon equals 0.020833 US cups, which is the reverse of the conversion above.

### Is there more than one kind of US cup?

US legal cup is 240 mL; the customary cup used here is 236.588 mL.

## Related pages

- [Teaspoons to US cups](https://atoneplace.net/convert/teaspoons-to-cups/)
- [US cups to Liters](https://atoneplace.net/convert/cups-to-liters/)
- [US cups to Milliliters](https://atoneplace.net/convert/cups-to-ml/)
- [US cups to Cubic meters](https://atoneplace.net/convert/cups-to-cubic-meters/)
- [US cups to US gallons](https://atoneplace.net/convert/cups-to-gallons/)
- [US cups to US quarts](https://atoneplace.net/convert/cups-to-quarts/)
- [US cups to US pints](https://atoneplace.net/convert/cups-to-pints/)
- [US cups to US fluid ounces](https://atoneplace.net/convert/cups-to-fl-oz/)
- [US cups to Tablespoons](https://atoneplace.net/convert/cups-to-tablespoons/)

## Sources

- Guide for the Use of the International System of Units (SP 811) — NIST (https://www.nist.gov/pml/special-publication-811) [Public domain (US Government)]
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures (https://www.bipm.org/en/publications/si-brochure)
- Calculated on this page — At One Place (/about/)