Convert Onion from Cups (chopped) to Grams
Use the tool below to convert onion from Cups (chopped) to Grams.
How many grams is 1 cup of onion?
One cup of chopped onion weighs about 167 g. Half a cup is about 83.5 g and two cups about 334 g. The weight is the same at any item size, since it measures chopped flesh, so use the converter above for any cup amount.
Onion substitutes
Ran out? What to use instead of onion →
No measuring cups? The tool below gets you close, and a measuring cup set keeps every batch the same.
Scoop it right, get measuring cupsOnion converter tool
Enter an amount, pick your units, and set the size for counting whole onions.
Result
167 gOnion Calculators & Kitchen Tools
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Common Onion conversions
Quick reference for onion at medium size. Switch the size in the converter above for small or large.
| Cups (chopped) | Grams |
|---|---|
| 0.25 cups | 41.75 g |
| 0.5 cups | 83.5 g |
| 0.75 cups | 125.25 g |
| 1 cup | 167 g |
| 1.5 cups | 250.5 g |
| 2 cups | 334 g |
| 3 cups | 501 g |
For the reverse conversion, see what 200 grams of onions is in cups.
Frequently Asked Questions
- How many grams is a cup of onions?
- A cup of onions is about 167 grams of onion. The density of chopped onion is fixed, so the ratio holds at any amount: double the cups and you double the grams. Use the converter above for any quantity, or the chart above for the most common amounts. Open the onion converter
- How many grams is 2 cups of onions?
- 2 cups of onions is about 334 grams. The ratio is fixed, so a cup of onions is 167 grams and the figure scales in a straight line as you multiply or divide. Scaling a recipe up or down keeps the same proportion, so work from whichever amount your recipe lists. Use the converter above for any other quantity of onion.
- How many cups of onions is 167 grams?
- 167 grams of onions is about 1 cup. The conversion works the same in reverse, so you can switch between cups and grams without changing the result. This helps when a recipe lists one unit but you would rather measure the other. Use the converter above for any amount.
- What is the difference between a metric and US cup?
- A metric cup holds 250 ml while a US cup holds 240 ml, so a US cup is 4% smaller. For chopped onion that gap is small but real, and it adds up across several cups. The guide linked below explains when the difference matters and how to switch between the two so a recipe lands right whichever cup you own. metric v US cup
Related to Onion
Shallot
Shallots are milder and sweeter than yellow onion. Use in dressings, pan sauces, and gentle stews; skip when you need the raw bite of a sharp onion. See our Shallot converter.
Spring Onion
Best raw: salsas, dressings, and garnish. Spring onion whites are much milder than yellow onion, so cook gently or you lose the allium entirely. See our Spring Onion converter.
Garlic
Mincing garlic for the same dish? Garlic cloves (2–7 g) bring pungent bite where onion brings sweet body. See what a cup of cloves is in grams.
Radish
Want a crisp, peppery bite? Radishes (8–25 g) are sharp and crunchy, good raw in slaws or quick pickles. See our Radish converter.
Chopped Onion
Already chopping? The chopped onion converter moves straight between cups, grams, and spoons of prepped onion. See our Chopped Onion converter.
See all available fresh produce and cooking ingredients.