1/2 Cup Olive Oil in Grams
1/2 cup of olive oil weighs 108 g (poured, USDA). Oil pressed from olives; extra virgin is best uncooked, refined suits frying. All the figures on this page are approximate conversions based on the USDA value, so when a recipe really matters, verify with a kitchen scale.
Oil pressed from olives; extra virgin is best uncooked, refined suits frying. It is used for dressings, roasting, frying and bread dipping. That range of uses is part of why the conversion comes up so often: the same ingredient appears in everyday cooking and in precise baking, and the two situations demand different levels of accuracy. Knowing the weight of half a cup, rather than guessing from a measuring cup, keeps the result consistent no matter which recipe you are following.
Why weighing half a cup of olive oil beats measuring it in cups
The reason cooks weigh olive oil instead of scooping it is that fat is not just a flavouring, it is a structural ingredient. Too little and pastry turns tough and bread turns dry; too much and cookies spread into lace and a cake sinks. 1/2 cup of olive oil weighs 108 g when measured poured, and that number is the same whether you are making a weekday traybake or a celebration cake. Using the scale also keeps your recipe notes honest: when a bake turns out perfectly, you can repeat it exactly, because grams do not change with the temperature of the kitchen or the way you pack the cup.
Olive Oil cups to grams conversion table
| Cups | Grams (approx.) |
|---|---|
| 1/4 cup | 54 g |
| 1/3 cup | 72 g |
| 1/2 cup | 108 g |
| 2/3 cup | 144 g |
| 3/4 cup | 162 g |
| 1 cup | 216 g |
| 1 1/2 cups | 324 g |
| 2 cups | 432 g |
| 3 cups | 648 g |
One tablespoon of olive oil weighs about 13.5 g, and one teaspoon about 4.5 g. For small amounts a scale that reads to the gram is far more reliable than a spoon, because a heaped tablespoon can weigh half as much again as a level one. The table is rounded to the nearest half gram, so the numbers are approximate by design; the half-cup figure of 108 g is the one to use when a recipe calls for half a cup.
How the weight was measured
Poured means pouring the ingredient into a liquid measuring jug on a flat surface and reading the level at eye level. Liquids level themselves, so there is no spooning or levelling involved, and the weight follows directly from the volume and the density.
The source for the 216 g per cup figure is USDA, and the confidence in the value is high. USDA publishes a standard ingredient weight chart that recipe developers use as a reference, and this page follows it exactly rather than averaging across sources, because an average of two different measuring methods is a number that matches nobody's cup.
There is a dispute worth knowing about. USDA gives 216 g per cup (0.91 g/ml); the King Arthur chart lists 200 g. We use the USDA density value. The practical advice is simple: use the value in the table above, measure the way the table describes, and your results will match the recipes this site is built around. If a recipe you are following was written with a different value, follow that recipe's value instead of ours, because consistency within one recipe matters more than which authoritative number you pick.
All the figures on this page are approximate conversions. When a recipe really matters, verify with a kitchen scale: weigh the ingredient directly into the bowl on a tared scale and trust that number over any cup.
Worked examples
A sponge cake that must stay tender
A sponge calling for 1/2 cup of olive oil needs 108 g, and the fat must be weighed precisely because it tenderises the crumb. An extra spoonful weighs the cake down and makes it greasy; a short measure leaves it dry and tough.
Doubling a biscuit batch
Doubling a biscuit recipe that uses 1/2 cup of olive oil means 1 cup, or 216 g. Write the gram weight on the recipe card and the doubled batch will taste identical to the original.
A small batch of frosting
A frosting that asks for 1/3 cup of olive oil needs about 72 g. Small fractional amounts are where cup measures are least reliable, so the scale turns a fiddly measurement into a ten-second job.
When this conversion matters most
Precision matters most when you are repeating a success. A bake that turned out perfectly deserves to be repeatable, and grams are the only record that survives from one kitchen to the next. Record 108 g for 1/2 cup of olive oil on your recipe card, and the next time you make it the result will be the same, whether the fat is cold from the fridge or soft on the bench.
Common mistakes with olive oil
- Levelling a solid fat with a finger. A fingertip is not straight and not level. Use the back of a knife to sweep the top of the cup flat, or weigh 108 g and skip the levelling altogether.
- Measuring over the mixing bowl. Spilling a little extra into the bowl is easy and invisible. Measure over the bench, or weigh directly into the bowl on a tared scale.
- Ignoring temperature. Cold olive oil packs differently from soft olive oil. Weigh it at the temperature the recipe specifies, or weigh it cold and let it soften in the bowl.
- Storing fat warm. Warm storage softens fat and changes how it packs, which changes the weight per cup. Keep olive oil as the storage note on this page advises so 108 g per half-cup stays true.
Storage and handling
Cool, dark place away from the stove; use within 6 months of opening. Keeping olive oil stored properly also keeps its weight per cup stable: an ingredient that has absorbed moisture from the air weighs more per cup than a dry one, so good storage is not just about freshness, it is about measurement accuracy too. If a container has been open for months in a humid kitchen, the first thing to do before a precise bake is to weigh the ingredient rather than trusting the cup.
Frequently asked questions
How many grams is 1/2 cup of olive oil?
1/2 cup of olive oil weighs 108 g, measured poured according to USDA. That is the figure to use when converting a recipe from cups to grams, and it is the value the conversion table on this page is built on.
How do I measure olive oil without a scale?
Poured means pouring the ingredient into a liquid measuring jug on a flat surface and reading the level at eye level. Liquids level themselves, so there is no spooning or levelling involved, and the weight follows directly from the volume and the density. That gives the closest result to 108 g per half-cup, but it is still an estimate: the honest answer is that a scale is the only way to know the exact weight, and a basic digital kitchen scale costs less than a bag of good flour.
Should I measure olive oil melted or solid?
Measure it in the state the recipe specifies. Melted fat takes up less volume than solid fat, so a cup of melted olive oil weighs more than a cup of solid olive oil. Weighing 108 g avoids the question entirely, because grams do not change when the fat melts.
What is olive oil used for?
Dressings, roasting, frying and bread dipping. Oil pressed from olives; extra virgin is best uncooked, refined suits frying.
Can I swap olive oil for butter cup-for-cup?
Not reliably. Different fats weigh different amounts per cup and behave differently in baking, so a cup-for-cup swap changes the recipe. Swap by weight instead: 1/2 cup of olive oil is 108 g, so use the same weight of the other fat and expect a slightly different flavour and texture. Butter also contains water and milk solids, which oils and shortening do not.
How should I store olive oil?
Cool, dark place away from the stove; use within 6 months of opening. Good storage keeps the ingredient fresh and keeps its weight per cup consistent, because moisture absorbed from the air adds grams that the recipe did not ask for.
Related conversions
Use the butter to oil converter or the cups to grams converter for instant answers, or browse the cups to grams hub for the full ingredient list. Related pages: Olive Oil in cups to grams, 1/2 cup butter in grams, 1/2 cup vegetable oil in grams, 1/2 cup coconut oil in grams. More tools: cups to grams converter, grams to cups converter, recipe scaler. See also our disclaimer about approximate conversions.