Popular amounts, already calculated

Oil to Butter Conversion Chart

Use this chart when you want an immediate answer without entering a number. Quick is the familiar recipe rule; Exact balances the fat using the density of each ingredient.

Oil to butter converter

Use

1¼ cups

Which is also

273 g
19½ tbsp
2⅜ 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	218 g × 1 fat ÷ 0.8 fat = 272.5 g
Source	218 g · 218 g fat
Result	272.5 g · 218 g fat
Ratio	×1.25

For one US cup of vegetable oil, Exact mode calculates 272.5 g of butter, which weighs as 273 g on a kitchen scale.

Common amounts

Oil to butter chart by cup

Use this oil to butter conversion chart for cups, tablespoons, millilitres and grams. It provides an oil and butter equivalent for baking, including oil millilitres to butter grams and the most searched cup and tablespoon amounts.

Jump to Cups Jump to Tablespoons Jump to Millilitres Jump to Grams

Cups

Oil to butter cup conversions from one-eighth cup through one cup, including quarter cup, one-third cup, half cup and three-quarter cup oil to butter.
Oil amount	Quick butter	Exact butter	Butter in grams
⅛ cup	⅛ cup	⅛ cup	34.06 g
¼ cup	⅓ cup	⅓ cup	68.13 g
⅓ cup	⅜ cup	⅜ cup	90.83 g
½ cup	⅝ cup	⅝ cup	136.25 g
⅔ cup	⅞ cup	¾ cup	181.67 g
¾ cup	0.94 cups	⅞ cup	204.38 g
1 cup	1¼ cups	1¼ cups	272.5 g

Tablespoons

Tablespoon oil to butter conversions from 1 tablespoon through 6 tablespoons.
Oil amount	Quick butter	Exact butter	Butter in grams
1 tbsp	1¼ tbsp	1¼ tbsp	16.79 g
2 tbsp	2½ tbsp	2⅜ tbsp	33.58 g
3 tbsp	3¾ tbsp	3⅝ tbsp	50.37 g
4 tbsp	5 tbsp	4¾ tbsp	67.16 g
5 tbsp	6¼ tbsp	6 tbsp	83.95 g
6 tbsp	7½ tbsp	7¼ tbsp	100.74 g

Millilitres

Oil millilitres to butter grams, covering common baking amounts from 30 ml through 300 ml.
Oil amount	Quick butter	Exact butter	Butter in grams
30 ml	35.5 g	34.1 g	34.06 g
40 ml	47.3 g	45.4 g	45.42 g
45 ml	53.2 g	51.1 g	51.09 g
50 ml	59.1 g	56.8 g	56.77 g
60 ml	70.9 g	68.1 g	68.13 g
65 ml	76.8 g	73.8 g	73.8 g
75 ml	88.7 g	85.2 g	85.16 g
80 ml	94.6 g	90.8 g	90.83 g
90 ml	106 g	102 g	102.19 g
100 ml	118 g	114 g	113.54 g
120 ml	142 g	136 g	136.25 g
125 ml	148 g	142 g	141.93 g
140 ml	166 g	159 g	158.96 g
150 ml	177 g	170 g	170.31 g
200 ml	236 g	227 g	227.08 g
240 ml	284 g	273 g	272.5 g
250 ml	296 g	284 g	283.85 g
295 ml	349 g	335 g	334.95 g
300 ml	355 g	341 g	340.63 g

Grams

Oil to butter conversion in grams from 20 g through 100 g.
Oil amount	Quick butter	Exact butter	Butter in grams
20 g	26 g	25 g	25 g
25 g	32.5 g	31.3 g	31.25 g
30 g	39 g	37.5 g	37.5 g
40 g	52.1 g	50 g	50 g
50 g	65.1 g	62.5 g	62.5 g
60 g	78.1 g	75 g	75 g
80 g	104 g	100 g	100 g
90 g	117 g	113 g	112.5 g
100 g	130 g	125 g	125 g

What matters in the kitchen

How to use this conversion

Read across

Find the amount of oil in the first column, then choose the quick or exact result.

Prefer grams

Weight is more reliable than cups because butter packing and cup standards can vary.

Check the oil

Olive oil has a slightly different density, while coconut oil is a structural exception.

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