---
title: "2.5 tsp to cup = 0.052083 cup"
description: "2.5 teaspoons is 0.052083 US cups. The arithmetic, a table of nearby values, and a converter for any other number."
url: https://atoneplace.net/convert/2-5-teaspoons-to-cups/
site: "At One Place"
---

# 2.5 tsp to cup

**2.5 teaspoons in US cups: 2.5 tsp = 0.052083 cup**

cup = tsp × 1/48

2.5 teaspoons is 0.052083 US cups. To get there, multiply by 0.02083333333.

## Values either side

*Teaspoons near 2.5, converted to US cups.*

| Teaspoons | US cups |
| --- | --- |
| 0.5 tsp | 0.010417 |
| 1 tsp | 0.020833 |
| 1.5 tsp | 0.03125 |
| 2 tsp | 0.041667 |
| 2.5 tsp ← | 0.052083 |
| 3 tsp | 0.0625 |
| 4 tsp | 0.083333 |
| 5 tsp | 0.10417 |
| 6 tsp | 0.125 |

## How the conversion works

The relationship is cup = tsp × 1/48. 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 2.5 tsp in US cups?

2.5 tsp is 0.052083 cup.

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

Multiply by 0.02083333333.

## Related pages

- [Teaspoons to US cups](https://atoneplace.net/convert/teaspoons-to-cups/)
- [2.5 cup to tsp](https://atoneplace.net/convert/2-5-cups-to-teaspoons/)
- [0.5 tsp to cup](https://atoneplace.net/convert/0-5-teaspoons-to-cups/)
- [1 tsp to cup](https://atoneplace.net/convert/1-teaspoons-to-cups/)
- [1.5 tsp to cup](https://atoneplace.net/convert/1-5-teaspoons-to-cups/)
- [2 tsp to cup](https://atoneplace.net/convert/2-teaspoons-to-cups/)
- [3 tsp to cup](https://atoneplace.net/convert/3-teaspoons-to-cups/)
- [4 tsp to cup](https://atoneplace.net/convert/4-teaspoons-to-cups/)
- [5 tsp to cup](https://atoneplace.net/convert/5-teaspoons-to-cups/)
- [6 tsp to cup](https://atoneplace.net/convert/6-teaspoons-to-cups/)

## 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/)