---
title: "2.5 tbsp to cup = 0.15625 cup"
description: "2.5 tablespoons is 0.15625 US cups. The arithmetic, a table of nearby values, and a converter for any other number."
url: https://atoneplace.net/convert/2-5-tablespoons-to-cups/
site: "At One Place"
---

# 2.5 tbsp to cup

**2.5 tablespoons in US cups: 2.5 tbsp = 0.15625 cup**

cup = tbsp × 1/16

2.5 tablespoons is 0.15625 US cups. To get there, multiply by 0.0625.

## Values either side

*Tablespoons near 2.5, converted to US cups.*

| Tablespoons | US cups |
| --- | --- |
| 0.5 tbsp | 0.03125 |
| 1 tbsp | 0.0625 |
| 1.5 tbsp | 0.09375 |
| 2 tbsp | 0.125 |
| 2.5 tbsp ← | 0.15625 |
| 3 tbsp | 0.1875 |
| 4 tbsp | 0.25 |
| 5 tbsp | 0.3125 |
| 6 tbsp | 0.375 |

## How the conversion works

The relationship is cup = tbsp × 1/16. 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 tbsp in US cups?

2.5 tbsp is 0.15625 cup.

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

Multiply by 0.0625.

## Related pages

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