Account for flavour and density

Olive Oil to Butter Converter

Olive oil is slightly lighter than vegetable oil and contributes a recognisable flavour. The calculator applies olive oil's own density before matching the butterfat.

Oil to butter converter

Use

1.1 g

Which is also

0 cups
⅛ tbsp
0 sticks

Butter is about 80% fat, so you need more of it by weight to carry the same fat as oil.
About 80% fat, 16-17% water and milk solids. The water is why butter and oil are not a straight swap.

Show the maths

Formula	0.9 g × 1 fat ÷ 0.8 fat = 1.13 g
Source	0.9 g · 0.9 g fat
Result	1.13 g · 0.9 g fat
Ratio	×1.25

One US cup of olive oil weighs about 216 g, so the exact fat match is 270 g butter.

Common amounts

Olive oil to butter chart

Source	Quick	Exact	Exact grams
30 ml	35.5 g	33.8 g	33.75 g
50 ml	59.1 g	56.3 g	56.25 g
60 ml	70.9 g	67.5 g	67.5 g
80 ml	94.6 g	90 g	90 g
100 ml	118 g	113 g	112.5 g
120 ml	142 g	135 g	135 g
150 ml	177 g	169 g	168.75 g
200 ml	236 g	225 g	225 g
250 ml	296 g	281 g	281.25 g

What matters in the kitchen

How to use this conversion

Taste first

Robust extra-virgin oil is noticeable; mild or refined olive oil is easier to replace quietly.

Good pairings

Butter works naturally in chocolate, citrus, almond and spice bakes that already suit olive oil.

Use the density

A volume-only shortcut misses the small but real weight difference between oils.

Calculations are fat-matched using official compositional benchmarks from the USDA FoodData Central and liquid density tables. Read our full methodology in our Editorial & Fact-Checking Policy.

Questions about this tool