Cups to Grams Calculator
Cups converted to grams for the ingredient in your hand — flour, sugars, butter, oats, rice, cocoa, honey and others — because a cup of flour and a cup of sugar weigh very different amounts.
A cup is a volume; grams are a weight, and the link is the ingredient’s density: a cup of plain flour is about 125 g, of caster sugar 200 g, of honey 340 g.
How the cups to grams calculator works
A cup is a volume; grams are a weight, and the link is the ingredient’s density: a cup of plain flour is about 125 g, of caster sugar 200 g, of honey 340 g. The figures here are for spooned-and-levelled ingredients in a 240 ml US cup, scaled for the 250 ml metric cup used in Australia, New Zealand and much of Europe. Weighing is always more accurate than measuring by volume.
Formula: grams = cups × grams per cup (ingredient) × (cup size ÷ 240)
Worked examples
| Inputs | Grams | Note |
|---|---|---|
| 1½ cups plain flour (metric cup) | 195 | 195 g |
| 1 cup caster sugar (US cup) | 200 | 200 g |
| ½ cup honey | 170 | 170 g |
FAQFrequently asked questions
Why do a cup of flour and a cup of sugar weigh different amounts?
Density. Flour is light and full of air; sugar crystals pack tightly; honey is denser still. That is why a recipe in grams is reproducible and one in cups depends on how you fill the cup.
Spooned or scooped?
These figures are for flour spooned into the cup and levelled. Scooping the cup into the bag packs it and adds 20–30 g — the commonest reason home-baked bread and cakes come out dry.
US or metric cup?
A US cup is 236.6 ml (called 240 in practice); the metric cup used in Australia, New Zealand, Canada and many European kitchens is 250 ml — about 4% more. UK recipes mostly use grams.
How accurate is this?
Within about 5–10%: brands, humidity and how you fill the cup all matter. For bread and pastry, weigh; for a stew, a cup is fine.
Where these figures come from
- US FDA — Safe Minimum Internal Temperatures — the internal temperatures the roasting calculator targets
- NIST SP 811 — Guide for the Use of the International System of Units — the exact weight and volume conversions used throughout
- UK Food Standards Agency — food safety and labelling standards
Last checked: September 2026. Baking ratios follow standard baker's percentage practice; roasting guidance follows published safe internal temperatures.