Convert Instant Yeast from Cup to Grams

How many grams is 1 cup of instant yeast?

1 cup of instant yeast (fast-acting yeast) is 150 grams. 2 cups of instant yeast is 300 grams. 1/2 cup of instant yeast is 75 grams. 1/4 cup (0.25 cup) of instant yeast is 37.5 grams. Use the converter below for any amount.

  • These figures use the metric cup (250 ml), so 1 cup is 150 g. A US cup is slightly smaller at 240 ml and holds about 144 g. Use the US cup converter →
  • Cup sizes are not standard worldwide, so the same cup of an ingredient can weigh more or less depending on the country. What is a cup measurement →

Instant yeast is a finely milled dry yeast that mixes straight into dry ingredients without proofing first. One metric cup (250 ml) of instant yeast weighs around 150 grams or 5.29 ounces, though recipes almost always measure it by the teaspoon or sachet (a 7 g sachet equals about 2 1/3 teaspoons). It is the quickest route to a reliable rise in bread, pizza dough, and cinnamon rolls.

Yeast amounts are tiny but matter a lot: too little gives a dense loaf, too much an over-proofed one with a yeasty taste. Weighing in grams is far more accurate than scooping a teaspoon, especially when scaling a recipe up or down.

Also known as

  • fast-acting yeast
  • rapid rise yeast
  • bread machine yeast
  • quick yeast

Active dry yeast is granular and needs proofing in warm liquid before use, unlike instant yeast which goes straight into the dry mix. They are interchangeable 1:1 by weight, so the swap is about method rather than amount. See what 1 cup of active dry yeast is in grams.

No measuring cups? The tool below gets you close, and a measuring cup set keeps every batch the same.

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Instant Yeast Measurement Converter

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Result

150 Grams

Common Instant Yeast Conversions

Here are the most common instant yeast conversions from cups to grams.

CupsGrams
0.25 cups37.5 g
0.5 cups75 g
0.75 cups112.5 g
1 cup150 g
1.25 cups187.5 g
1.5 cups225 g
2 cups300 g
2.5 cups375 g
3 cups450 g

Instant Yeast Conversion Chart

The conversion chart below gives a quick reference for converting instant yeast from Cup to Grams and other measurements.

cupgramsouncescup(US)tbsptsp
0.25 cup37.5 g1.32 oz0.26 cup (US)4.17 tbsp12.5 tsp
0.5 cup75 g2.65 oz0.52 cup (US)8.33 tbsp25 tsp
1 cup150 g5.29 oz1.04 cup (US)16.67 tbsp50 tsp
2 cup300 g10.58 oz2.08 cup (US)33.33 tbsp100 tsp

For the reverse conversion, see 15 grams of instant yeast in cups.

Frequently Asked Questions

What is 1 cup of instant yeast in grams?
1 cup of instant yeast is 150 grams. The ratio is fixed, so 2 cups of instant yeast is 300 grams and 0.5 cups is 75 grams. Use the converter above for any quantity, or check the conversion chart on this page for the most common amounts at a glance. Open the instant yeast converter
How many grams is 1.5 cups of instant yeast?
1.5 cups of instant yeast is 225 grams. The ratio is fixed, so 1 cup of instant yeast is 150 grams and 2 cups is 300 grams. Type any other amount into the converter above for the exact figure, or use the chart below for the common ones.
What is 2 cups of instant yeast in grams?
2 cups of instant yeast is 300 grams. Conversions scale in a straight line, so halving or doubling a recipe keeps the same ratio. 1 cup of instant yeast is 150 grams, and you can multiply or divide that figure to match whatever your recipe needs. Enter any amount in the converter above for an exact grams reading.
How many cups of instant yeast is 150 grams?
150 grams of instant yeast is 1 cup. The conversion works the same in reverse, so you can switch between grams and cups without changing the result. This helps when a recipe lists cups but you would rather weigh or measure in grams. The converter above and the chart below cover both directions for any amount.
How much is 1 cup of fast-acting yeast in grams?
Fast-acting yeast is another name for instant yeast, so 1 cup of fast-acting yeast is 150 grams, exactly the same as instant yeast. The figure does not change with the name: 2 cups is 300 grams and 0.5 cups is 75 grams. Use the converter above for any quantity, or read the conversion chart on this page for the most common amounts.
Are instant yeast and fast-acting yeast the same thing?
Yes. Fast-acting yeast is another name for instant yeast, so they are the same ingredient and convert identically. 1 cup of instant yeast is 150 grams under either name, and 2 cups is 300 grams. Recipes use the two names interchangeably, so you can follow either one without changing quantities or weighing any differently.
What is 1/2 cup instant yeast in grams?
1/2 cup of instant yeast is 75 grams. The ratio is fixed, so 1 cup of instant yeast is 150 grams and 2 cups is 300 grams. Half measures come up often when scaling a recipe down, and the figure divides cleanly. Use the converter above for any other amount, or the chart below for the common ones.
What is 1/4 cup instant yeast in grams?
1/4 cup (0.25 cup) of instant yeast is 37.5 grams. The ratio is fixed, so 1 cup of instant yeast is 150 grams and 2 cups is 300 grams. Quarter amounts often come up when scaling a recipe down step by step, and the figure divides cleanly. Use the converter above for any other quantity, or the chart below for the most common amounts.
Is 1 cup of instant yeast 150 or 144 grams?
A cup of instant yeast weighs 150 grams in a metric cup (250 ml) and about 144 grams in a US cup (240 ml), since the metric cup holds a little more. Most US recipes mean the US cup, while UK, Australian, and European recipes use the metric cup. The difference is small but worth checking when a recipe is precise. Weigh on a scale for the most reliable result.

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