---
title: "1.5 fl oz to cup = 0.1875 cup"
description: "1.5 US fluid ounces is 0.1875 US cups. The arithmetic, a table of nearby values, and a converter for any other number."
url: https://atoneplace.net/convert/1-5-fl-oz-to-cups/
site: "At One Place"
---

# 1.5 fl oz to cup

**1.5 US fluid ounces in US cups: 1.5 fl oz = 0.1875 cup**

cup = fl oz × 1/8

1.5 US fluid ounces is 0.1875 US cups. To get there, multiply by 0.125.

## Values either side

*US fluid ounces near 1.5, converted to US cups.*

| US fluid ounces | US cups |
| --- | --- |
| 0.5 fl oz | 0.0625 |
| 1 fl oz | 0.125 |
| 1.5 fl oz ← | 0.1875 |
| 2 fl oz | 0.25 |
| 2.5 fl oz | 0.3125 |
| 3 fl oz | 0.375 |
| 4 fl oz | 0.5 |

## How the conversion works

The relationship is cup = fl oz × 1/8. 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 1.5 fl oz in US cups?

1.5 fl oz is 0.1875 cup.

### How do you convert US fluid ounces to US cups?

Multiply by 0.125.

## Related pages

- [US fluid ounces to US cups](https://atoneplace.net/convert/fl-oz-to-cups/)
- [1.5 cup to fl oz](https://atoneplace.net/convert/1-5-cups-to-fl-oz/)
- [0.5 fl oz to cup](https://atoneplace.net/convert/0-5-fl-oz-to-cups/)
- [1 fl oz to cup](https://atoneplace.net/convert/1-fl-oz-to-cups/)
- [2 fl oz to cup](https://atoneplace.net/convert/2-fl-oz-to-cups/)
- [2.5 fl oz to cup](https://atoneplace.net/convert/2-5-fl-oz-to-cups/)
- [3 fl oz to cup](https://atoneplace.net/convert/3-fl-oz-to-cups/)
- [4 fl oz to cup](https://atoneplace.net/convert/4-fl-oz-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/)