Disclaimer

Last updated: July 2026

Read the numbers on ouncestocups.com as a kitchen convenience, not an exact science. Here is where they stop.

Dry ounces and fluid ounces differ

This is the big one. A fluid ounce is a volume and converts to cups by a fixed rule, but a dry ounce is a weight, and a cup of flour weighs about 4.4 ounces while a cup of sugar weighs about 7.1. Don't treat "8 ounces" of a dry ingredient as a cup; use the cups-to-pounds page for weights.

Ingredient weights are typical values

The weight of a cup depends on the brand, the grind and how firmly it is packed, so the figures here are representative rather than exact. When precision matters, a kitchen scale beats any cup-based conversion.

Cups are not universal

A US cup, a metric cup and an imperial cup are slightly different sizes, so match your recipe's origin. The converter's selector lets you pick.

The bottom line

We take care and use standard measures, but we can't promise a result suits your exact recipe, and we take no responsibility for how a dish turns out.