Convert Instant Yeast from Teaspoon to Cup (US)

How many US cups is 1 teaspoon of instant yeast?

1 teaspoon of instant yeast (fast-acting yeast) is 0.02 US cups. 2 teaspoons of instant yeast is 0.04 US cups. 1/2 teaspoon of instant yeast is 0.01 US cups. 1/4 teaspoon (0.25 teaspoon) of instant yeast is 0.01 US cups. Use the converter below for any amount.

  • These figures use the US cup (240 ml). A metric cup is slightly larger at 250 ml, so it holds a little more. Use the metric 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 →
  • A teaspoon here is the 5 ml standard, the same in the UK, Europe, and Australia. A US teaspoon is fractionally smaller at about 4.9 ml. When teaspoon size matters →
  • A little over or under won't ruin the bake, though it can nudge the final taste or colour.

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 our Active Dry Yeast converter.

No measuring cups? The tool below gets you close. For consistent results, grab a measuring cup set.

Instant Yeast Measurement Converter

Enter a value and pick your units.

Result

0 Cup (US)

Common Instant Yeast Conversions

Here are the most common instant yeast conversions from teaspoons to cups (US).

TeaspoonsCups (US)
0.25 tsp0.01 cups (US)
0.5 tsp0.01 cups (US)
1 tsp0.02 cups (US)
2 tsp0.04 cups (US)
3 tsp0.06 cups (US)
4 tsp0.08 cups (US)
6 tsp0.13 cups (US)
8 tsp0.17 cups (US)
12 tsp0.25 cups (US)

Instant Yeast Conversion Chart

The conversion chart below gives a quick reference for converting instant yeast from Teaspoon to Cup (US) and other measurements.

tspcup(US)cupgramsouncestbsp
1 tsp0.02 cup (US)0.02 cup3 g0.11 oz0.33 tbsp
2 tsp0.04 cup (US)0.04 cup6 g0.21 oz0.67 tbsp
3 tsp0.06 cup (US)0.06 cup9 g0.32 oz1 tbsp
4 tsp0.08 cup (US)0.08 cup12 g0.42 oz1.33 tbsp

Frequently Asked Questions

How many US cups is 1 teaspoon of instant yeast?
1 teaspoon of instant yeast is 0.02 US cups. The ratio is fixed, so 2 teaspoons of instant yeast is 0.04 US cups and 0.5 teaspoons is 0.01 US cups. 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 US cups is 1.5 teaspoons of instant yeast?
1.5 teaspoons of instant yeast is 0.03 US cups. The ratio is fixed, so 1 teaspoon of instant yeast is 0.02 US cups and 2 teaspoons is 0.04 US cups. Type any other amount into the converter above for the exact figure, or use the chart below for the common ones.
How many US cups is 2 teaspoons of instant yeast?
2 teaspoons of instant yeast is 0.04 US cups. Conversions scale in a straight line, so halving or doubling a recipe keeps the same ratio. 1 teaspoon of instant yeast is 0.02 US cups, and you can multiply or divide that figure to match whatever your recipe needs. Enter any amount in the converter above for an exact US cups reading.
How many teaspoons of instant yeast is 0.02 US cups?
0.02 US cups of instant yeast is 0.96 teaspoons. The conversion works the same in reverse, so you can switch between US cups and teaspoons without changing the result. This helps when a recipe lists teaspoons but you would rather weigh or measure in US cups. The converter above and the chart below cover both directions for any amount.
How many US cups is 1 teaspoon of fast-acting yeast?
Fast-acting yeast is another name for instant yeast, so 1 teaspoon of fast-acting yeast is 0.02 US cups, exactly the same as instant yeast. The figure does not change with the name: 2 teaspoons is 0.04 US cups and 0.5 teaspoons is 0.01 US cups. 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 teaspoon of instant yeast is 0.02 US cups under either name, and 2 teaspoons is 0.04 US cups. Recipes use the two names interchangeably, so you can follow either one without changing quantities or weighing any differently.
How many US cups is 1/2 teaspoon of instant yeast?
1/2 teaspoon of instant yeast is 0.01 US cups. The ratio is fixed, so 1 teaspoon of instant yeast is 0.02 US cups and 2 teaspoons is 0.04 US cups. 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.
How many US cups is 1/4 teaspoon of instant yeast?
1/4 teaspoon (0.25 teaspoon) of instant yeast is 0.01 US cups. The ratio is fixed, so 1 teaspoon of instant yeast is 0.02 US cups and 2 teaspoons is 0.04 US cups. 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.

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