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How Much Is 8.18 Ounces of Butter in Cups?

Converting 8.18 ounces of butter to cups gives 1.02 cups. First convert to grams (8.18 oz = 231.90g), then divide by the density of butter (227g per cup). Each ingredient fills a different volume at the same weight.

8.18 ounces of butter
=
1.02cups
Result using all cup standards info
1.02 cups (US) 0.97 cups (Metric Cup) 0.85 cups (Imperial Cup)
1.02

Formula and Step-by-Step

(ounces × 28.35g/oz) ÷ 227g/cup = cups
  1. Start with 8.18 ounces of butter
  2. Convert ounces to grams: 8.18 × 28.35 = 231.90g
  3. 1 cup of butter = 227g
  4. 231.90g ÷ 227g/cup = 1.02 cups

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

Measuring Tip

Butter is easiest to measure using the markings on the wrapper. One US stick = 113g = 1/2 cup = 8 tablespoons.

Butter at Different Amounts

How butter scales across common ounces measurements. Your amount (8.18 ounces) is highlighted.

4 oz0.50 cups5 oz0.62 cups6 oz0.75 cups8 oz1.00 cup8.18 oz1.02 cups10 oz1.25 cups12 oz1.50 cups16 oz2.00 cups

Other Amounts of Butter

Ounces US Cups Metric Cup Imperial Cup
1 ounce 0.12 cups 0.12 cups 0.10 cups
2 ounces 0.25 cups 0.24 cups 0.21 cups
3 ounces 0.37 cups 0.35 cups 0.31 cups
4 ounces 0.50 cups 0.47 cups 0.42 cups
5 ounces 0.62 cups 0.59 cups 0.52 cups
6 ounces 0.75 cups 0.71 cups 0.62 cups
8 ounces 1.00 cup 0.95 cups 0.83 cups
8.18 ounces 1.02 cups 0.97 cups 0.85 cups
10 ounces 1.25 cups 1.18 cups 1.04 cups
12 ounces 1.50 cups 1.42 cups 1.25 cups
16 ounces 2.00 cups 1.89 cups 1.66 cups

Understanding the Units

What is an Ounce?

An ounce (oz) is a US customary unit of weight equal to 28.3495 grams or 1/16 of a pound. In cooking, "ounces" refers to weight (avoirdupois ounces), not fluid ounces which measure volume.

What is a Cup?

There are three cup standards used worldwide. The US cup (236.588 ml) is used in American recipes. The metric cup (250 ml) is standard in Australia, New Zealand, and some parts of Asia. The imperial cup (284.131 ml) appears in older British and Canadian recipes. A metric cup holds about 5.7% more than a US cup, while an imperial cup holds about 20% more. Using the wrong standard can noticeably affect a recipe.

Frequently Asked Questions

About 1.02 cups, based on butter having a density of 227g per cup. The exact amount depends on how the ingredient is measured and the specific product.
First convert ounces to grams (1 ounce = 28.3495g), then divide by 227 (grams per cup). For 8.18 ounces: 8.18 × 28.3495 = 231.90g, then 231.90 ÷ 227 = 1.02 cups.
For the most accurate results, weigh butter 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.
Fat content has a small effect on density. Higher-fat versions are slightly lighter per volume because fat is less dense than water. The difference is usually under 5%, so this conversion works well for standard varieties.
Reverse the conversion: 1.02 cups × 227g/cup = 231.90g, then 231.90g ÷ 28.3495 = 8.18 ounces. Or use the Cups to Ounces converter.