---
title: "28 tsp to cup = 0.58333 cup"
description: "28 teaspoons is 0.58333 US cups. The arithmetic, a table of nearby values, and a converter for any other number."
url: https://atoneplace.net/convert/28-teaspoons-to-cups/
site: "At One Place"
---

# 28 tsp to cup

**28 teaspoons in US cups: 28 tsp = 0.58333 cup**

cup = tsp × 1/48

28 teaspoons is 0.58333 US cups. To get there, multiply by 0.02083333333.

## Values either side

*Teaspoons near 28, converted to US cups.*

| Teaspoons | US cups |
| --- | --- |
| 24 tsp | 0.5 |
| 25 tsp | 0.52083 |
| 26 tsp | 0.54167 |
| 27 tsp | 0.5625 |
| 28 tsp ← | 0.58333 |
| 29 tsp | 0.60417 |
| 30 tsp | 0.625 |
| 32 tsp | 0.66667 |
| 35 tsp | 0.72917 |

## 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 28 tsp in US cups?

28 tsp is 0.58333 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/)
- [28 cup to tsp](https://atoneplace.net/convert/28-cups-to-teaspoons/)
- [24 tsp to cup](https://atoneplace.net/convert/24-teaspoons-to-cups/)
- [25 tsp to cup](https://atoneplace.net/convert/25-teaspoons-to-cups/)
- [26 tsp to cup](https://atoneplace.net/convert/26-teaspoons-to-cups/)
- [27 tsp to cup](https://atoneplace.net/convert/27-teaspoons-to-cups/)
- [29 tsp to cup](https://atoneplace.net/convert/29-teaspoons-to-cups/)
- [30 tsp to cup](https://atoneplace.net/convert/30-teaspoons-to-cups/)
- [32 tsp to cup](https://atoneplace.net/convert/32-teaspoons-to-cups/)
- [35 tsp to cup](https://atoneplace.net/convert/35-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/)