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How Much Is 4 Cups of Onions (Diced) in Grams?

Converting 4 cups of onions (diced) to grams gives 640.00 g. One cup of onions (diced) weighs 160g, so 4 cups is 4 × 160 = 640g. This conversion is specific to onions (diced) because each ingredient has a different density.

4 cups of onions (diced)
=
640.00g
Result using all cup standards info
640.00 g (US) 676.28 g (Metric Cup) 768.61 g (Imperial Cup)
4 cups of onions (diced) is also
640.00

Formula and Step-by-Step

cups × 160g/cup = grams
  1. Start with 4 cups of onions (diced)
  2. 1 cup of onions (diced) = 160g
  3. 4 × 160 = 640g

The same formula works for any amount. Multiply (or divide) by the density, then convert units as needed.

Measuring Tip

The weight of diced produce per cup depends on how finely it is cut. Smaller dice packs more tightly and weighs more per cup than large chunks.

Onions (Diced) at Different Amounts

How onions (diced) scales across common cups measurements. Your amount (4 cups) is highlighted.

0.5 cups80 g0.75 cups120 g1 cup160 g1.5 cups240 g2 cups320 g3 cups480 g4 cups640 g5 cups800 g

For reference, 4 cups of onions (diced) (640g) is close in weight to a basketball (624g).

Other Amounts of Onions (Diced)

Cups US Grams Metric Cup Imperial Cup
0.25 cups 40.00 g 42.27 g 48.04 g
0.33 cups 52.80 g 55.79 g 63.41 g
0.5 cups 80.00 g 84.54 g 96.08 g
0.75 cups 120.00 g 126.80 g 144.11 g
1 cup 160.00 g 169.07 g 192.15 g
1.5 cups 240.00 g 253.61 g 288.23 g
2 cups 320.00 g 338.14 g 384.30 g
3 cups 480.00 g 507.21 g 576.46 g
4 cups 640.00 g 676.28 g 768.61 g
5 cups 800.00 g 845.35 g 960.76 g

Understanding the Units

What is a Cup?

The US cup (236.588 ml) is slightly smaller than the metric cup used in Australia and some other countries (250 ml). When following recipes from different countries, check which cup standard is being used.

What is a Gram?

Grams are the preferred unit in professional kitchens and bakeries because they allow exact recipe scaling. To double a recipe, simply double the gram values. No need to worry about how tightly an ingredient is packed into a cup.

Frequently Asked Questions

About 640.00 g, based on onions (diced) having a density of 160g per cup. The exact amount depends on how the ingredient is measured and the specific product.
Multiply the number of cups by 160 (grams per cup for onions (diced)). For 4 cups: 4 × 160 = 640.00 g.
For the most accurate results, weigh onions (diced) on a kitchen scale. If measuring by volume, spoon the ingredient into the measuring cup and level it off with a straight edge rather than scooping directly.
Weight-per-cup values vary because of differences in how the ingredient is measured (spooned vs scooped), grind size, moisture content, and settling during storage. Our values use standardized measurement methods from established culinary references.
Reverse the conversion: 640.00 g ÷ 160 = 4 cups. Or use the Grams to Cups converter.