How Much Is 150g Of Butter

You're halfway through a recipe. Everything's going fine — flour measured, sugar ready, eggs cracked — and then you hit it: "150g butter, softened."

Your kitchen scale is buried in a drawer somewhere. Plus, or maybe you don't own one at all. Now you're Googling on a flour-dusted phone, wondering if that's one stick, two sticks, half a cup, or something else entirely.

Been there. Let's sort this out once and for all.

What Is 150g of Butter in Practical Terms

One hundred fifty grams is a weirdly specific amount. It's not a clean cup. It's not a full stick (at least not in the US). It sits right in that annoying middle ground where eyeballing it gets risky, especially in baking.

Here's the quick reference:

Volume equivalents:

⅔ cup (that's 10 tablespoons + 2 teaspoons)
10.5 tablespoons exactly
31.5 teaspoons if you're truly desperate

Stick equivalents (US standard 4-oz / 113g sticks):

1⅓ sticks — so one full stick plus a third of another
5.3 ounces by weight

Metric:

150 ml volume (since butter's density is close to water)
0.15 kg obviously

UK / European context:

A standard UK block is 250g — so 150g is ⅗ of a block
Many European recipes call for 150g specifically because it's a clean fraction of 250g

The metric system really does make more sense for this stuff.

Why 150g Shows Up So Often in Recipes

You'll notice 150g butter in a lot of European and Australian recipes. Cookies, cakes, pastry dough, shortbread — it's a sweet spot. Enough fat for tenderness and flavor, not so much that the structure collapses.

In US recipes, you'll more often see 1 cup (226g) or ½ cup (113g — one stick). But as more bakers work from international sources — Great British Bake Off cookbooks, Scandinavian baking blogs, Australian food sites — 150g keeps appearing.

It's also a common scaling amount. Here's the thing — halve a 300g butter cake? Here's the thing — 150g. Third of a 450g batch? 150g. It's just a convenient number.

Why Getting This Right Actually Matters

Look, I'm not going to pretend every recipe fails if you're off by 10 grams. Cookies will probably still be cookies. But butter isn't just fat — it's water (about 15-18%), milk solids, and fat in a specific emulsion.

Structure: Too much butter = spread. Cookies turn into lace. Cake edges get crispy in a bad way. Too little = dry, tough crumb.

Leavening: Creaming butter with sugar creates air pockets. The volume* of butter matters for how much air you can trap. If you pack 150g into a measuring cup but it's actually 170g because you smashed it in, your creaming ratio is off.

Hydration: Butter contributes water. In a lean dough (pie crust, biscuits), that water develops gluten. In a rich dough (brioche), it's part of the liquid balance. Swap weights for volume guesses and you're changing the hydration without realizing it.

Temperature behavior: Cold butter cut into flour creates flakiness. Softened butter creamed with sugar creates lightness. Melted butter creates chew. The amount* determines which regime you're in.

Is it the end of the world if you're off by a tablespoon? Day to day, no. So yeah. But if you're making laminated dough, macarons, or a finicky genoise? Weigh it.

How to Measure 150g Butter Without a Scale

Ideally, you have a digital kitchen scale. They're $15-25 and last years. But let's say you don't, or it's dead, or you're at a rental Airbnb kitchen.

The Wrapper Method (US Sticks)

Most US butter sticks have tablespoon markings on the wrapper. Think about it: one stick = 8 tablespoons = 113g. You need 150g.

Do this:

Use one full stick (113g, 8 tbsp)
Cut the second stick at the 2.5 tablespoon mark — that's roughly 37g
Total: ~150g

The wrapper lines aren't always perfectly accurate (manufacturing tolerances), but it's usually within a few grams.

The Water Displacement Trick

This is an old baker's hack. Butter floats. Water doesn't lie.

Fill a 2-cup liquid measuring cup with 1 cup (240ml) cold water
Add butter chunks until the water line hits 1⅔ cups (about 390ml total)
The displaced volume = butter volume. 150g butter ≈ 150ml volume. 240 + 150 = 390ml.
Drain water, pat butter dry

Works surprisingly well. Just use cold water and cold butter — warm butter smears and sticks to the cup.

Want to learn more? We recommend how many feet is 600 m and how many cups is in 1.5 liters for further reading.

The Tablespoon Measure

If you have dry measuring spoons and patience:

10 tablespoons + 2 teaspoons

Pack each tablespoon firmly. That's why don't heap. Level off with a knife. Two level teaspoons = ⅔ tablespoon.

It's tedious. But it works.

Visual Estimation (Last Resort)

A standard US stick is roughly the size of a deck of cards — 113g. 150g is that stick plus a piece about the size of a matchbox or two thumbs pressed together.

For a 250g block (common in UK/EU/AU): cut the block into 5 equal slices by eye. Plus, use 3 slices. Each slice ≈ 50g.

Is this precise? On the flip side, no. But it's better than a wild guess.

Common Mistakes People Make With 150g Butter

Using a Liquid Measuring Cup for Solid Butter

People scoop softened butter into a Pyrex cup, smoosh it down, and call it ⅔ cup. Two problems:

Air pockets. You're measuring butter + air.
Compression. Smooshing changes the volume. 150g loosely packed ≠ 150g firmly packed.

Dry measuring cups (the nested metal/plastic ones) are for solids. Fill, level, done. But even then — weight wins.

Assuming All Butter Is the Same Density

European butter: 82-86% fat, less water.
On the flip side, uS butter: 80% fat minimum, more water. Because of that, whipped butter: air injected — way less mass per volume. Spreadable/margarine blends: oil added, different density entirely.

150g of European butter takes up less* volume than 150g of US butter. The difference is small (~5-8%) but real. If a recipe was developed with European butter and you use US, you're effectively adding extra water.

Measuring Cold Butter by Volume

Recipe says "150g butter, softened." You measure cold butter in cups. Now you have the wrong amount and the wrong temperature.

Cold butter doesn

When the butter sits at room temperature, its density shifts enough that a “cup” of softened material can weigh anywhere from 130 g to 170 g depending on how loosely it’s packed. That variability is why many bakers keep a small digital scale on the counter – it eliminates the guesswork entirely.

If you’re working from a recipe that lists butter in grams but you only have measuring cups, a quick way to gauge the right amount without a scale is to think in terms of length. Consider this: a typical stick in the United States measures about 8 inches long; cutting it to the 10‑inch mark (roughly three‑quarters of the stick) will land you close to 150 g. For block‑style butter sold in Europe or Australia, a 250‑g package can be divided into five equal slices by eye; three of those slices will approximate the required weight.

Another subtle pitfall involves the type of fat you’re substituting. Because of that, margarine spreads, clarified ghee, and coconut oil each have a different mass‑to‑volume relationship. When a formula calls for 150 g of butter and you replace it with an equal volume of a softer oil, you may end up with a dough that’s noticeably wetter, which can affect both texture and rise. In such cases, it’s safer to convert the oil’s weight first, then measure that weight with a scale.

For those who frequently bake with butter but lack a dedicated scale, a simple habit can make a world of difference: always weigh the butter before it enters the mixing bowl. Even a modest kitchen scale that reads to the nearest gram will let you confirm that the portion you’ve cut matches the recipe’s specification. Once you’ve verified the weight, you can proceed to cut, melt, or cream the butter with confidence, knowing that the mass is spot‑on.

Finally, remember that precision matters most in recipes where chemistry plays a starring role—think laminated doughs, custards, or delicate sponge cakes. Which means in these contexts, a few grams can tip the balance between a tender crumb and a dense brick. By treating butter as a weight‑based ingredient rather than a volume‑based one, you align yourself with the standards that professional bakers rely on, and you’ll find that your results become more consistent, batch after batch.

In short, the most reliable way to handle a 150‑gram butter requirement is to let a scale do the heavy lifting, use visual guides only as a fallback, and stay mindful of how temperature and fat type can shift the numbers. With those practices in place, you’ll sidestep the common traps that trip up many home cooks and move one step closer to bakery‑level accuracy.

Conclusion
Converting butter from grams to a kitchen‑friendly measurement doesn’t have to be a mystery. By anchoring your approach on weight, leveraging simple cutting techniques, and staying alert to the nuances of temperature and fat composition, you can translate any butter amount—whether it’s 150 g or any other figure—into a reproducible, trustworthy quantity. The next time a recipe calls for that precise mass, you’ll know exactly how to measure it, ensuring that your baked goods turn out exactly as intended.