---
title: "18 cup to tsp = 864 tsp"
description: "18 US cups is 864 teaspoons. The arithmetic, a table of nearby values, and a converter for any other number."
url: https://atoneplace.net/convert/18-cups-to-teaspoons/
site: "At One Place"
---

# 18 cup to tsp

**18 US cups in teaspoons: 18 cup = 864 tsp**

tsp = cup × 48

18 US cups is 864 teaspoons. To get there, multiply by 48.

## Values either side

*US cups near 18, converted to teaspoons.*

| US cups | Teaspoons |
| --- | --- |
| 14 cup | 672 |
| 15 cup | 720 |
| 16 cup | 768 |
| 17 cup | 816 |
| 18 cup ← | 864 |
| 19 cup | 912 |
| 20 cup | 960 |
| 21 cup | 1,008 |
| 22 cup | 1,056 |

## 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 18 cup in teaspoons?

18 cup is 864 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/)
- [18 tsp to cup](https://atoneplace.net/convert/18-teaspoons-to-cups/)
- [14 cup to tsp](https://atoneplace.net/convert/14-cups-to-teaspoons/)
- [15 cup to tsp](https://atoneplace.net/convert/15-cups-to-teaspoons/)
- [16 cup to tsp](https://atoneplace.net/convert/16-cups-to-teaspoons/)
- [17 cup to tsp](https://atoneplace.net/convert/17-cups-to-teaspoons/)
- [19 cup to tsp](https://atoneplace.net/convert/19-cups-to-teaspoons/)
- [20 cup to tsp](https://atoneplace.net/convert/20-cups-to-teaspoons/)
- [21 cup to tsp](https://atoneplace.net/convert/21-cups-to-teaspoons/)
- [22 cup to tsp](https://atoneplace.net/convert/22-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/)