---
title: "1 cup to tsp = 48 tsp"
description: "1 US cup is 48 teaspoons. The arithmetic, a table of nearby values, and a converter for any other number."
url: https://atoneplace.net/convert/1-cups-to-teaspoons/
site: "At One Place"
---

# 1 cup to tsp

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

tsp = cup × 48

1 US cup is 48 teaspoons. To get there, multiply by 48.

## Values either side

*US cups near 1, converted to teaspoons.*

| US cups | Teaspoons |
| --- | --- |
| 0.5 cup | 24 |
| 1 cup ← | 48 |
| 1.5 cup | 72 |
| 2 cup | 96 |
| 2.5 cup | 120 |
| 3 cup | 144 |

## 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

### What is 1 cup in teaspoons?

1 cup is 48 tsp.

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

Multiply by 48.

## Related pages

- [US cups to teaspoons](https://atoneplace.net/convert/cups-to-teaspoons/)
- [1 tsp to cup](https://atoneplace.net/convert/1-teaspoons-to-cups/)
- [0.5 cup to tsp](https://atoneplace.net/convert/0-5-cups-to-teaspoons/)
- [1.5 cup to tsp](https://atoneplace.net/convert/1-5-cups-to-teaspoons/)
- [2 cup to tsp](https://atoneplace.net/convert/2-cups-to-teaspoons/)
- [2.5 cup to tsp](https://atoneplace.net/convert/2-5-cups-to-teaspoons/)
- [3 cup to tsp](https://atoneplace.net/convert/3-cups-to-teaspoons/)

## 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/)