100 grams of butter in cups

Butter is dense, so 100 grams is only about 0.44 of a US cup, near 7 tablespoons. Most converters round that up to half a cup, but half a cup of butter is a full 113 g stick. 100 g stops short of one.

100 grams against a stick

A US stick is the landmark for butter, not a cup. It weighs 113 g, fills exactly half a cup, and prints 8 tablespoon marks down the wrapper. 100 g is 13 g under that, so it is not the half cup the calculators name; the half cup is the stick itself. Read 100 g as most of a stick, one tablespoon shy of the wrapper's last line.

100 grams against a stick
WeightCupsTablespoons
One US stick113 ghalf8
Your 100 g100 g0.447

The butter master page carries the stick, the 227 g cup, and the European block that gets rounded to a stick and overstated by ten percent.

The same weight in tablespoons

Butter is the one fat a recipe measures in tablespoons straight off the wrapper, so tablespoons are the reading to trust here. 100 g is about 7 level tablespoons, since a tablespoon of butter weighs roughly 14.2 g. Cut against the printed lines and skip the cup, which you would only be eyeballing anyway.

Other butter weights in cups

The same reading for common amounts, with the stick marked:

Other butter weights in cups
ButterUS cups
50 g0.22 cups
100 g0.44 cups
113 g0.50 cupsone stick
200 g0.88 cups
250 g1.1 cups

Butter is the tidy one at this weight. The same 100 grams turns into an odd five-sixths for flour and a near-clean half for granulated sugar. Double it and 200 grams of butter is just under two sticks and a cup.

Common questions about butter by weight

Is 100 grams of butter half a cup?
No. Half a cup of butter is a full stick, 113 g. 100 g comes to about 0.44 of a cup, near 7 tablespoons, a little under a stick.
How many tablespoons is 100 grams of butter?
About 7, at roughly 14.2 g to a level tablespoon. A full stick carries 8 tablespoon marks, so 100 g is one short of a stick.
Is 100 grams of butter one stick?
Not quite. A US stick weighs 113 g, so 100 g is about 13 g less, close to seven-eighths of a stick.

Sources

USDA FoodData Central SR Legacy for the 227 gram cup and the 14.2 gram tablespoon, King Arthur Baking for the 113 gram stick. Both put a stick at half a cup. Full citations on the sources page.