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Active dry yeast — Teaspoons to Grams

One teaspoon of active dry yeast weighs about 3.13 grams, and one tablespoon is about 9.38 grams. One standard packet = 7 g = 2¼ tsp = ¼ oz, the same as instant yeast. About 3 g/tsp. Active dry traditionally proofs in warm water first, though King Arthur considers it optional. Use the converter below to switch active dry yeast between teaspoons, tablespoons, grams, ounces and more.

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Active dry yeast conversion chart

Active dry yeast conversion chart
Amount	Grams	Ounces
⅛ tsp	0.391 g	0.014 oz
¼ tsp	0.781 g	0.028 oz
½ tsp	1.56 g	0.055 oz
¾ tsp	2.34 g	0.083 oz
1 tsp	3.13 g	0.11 oz
1 tbsp	9.38 g	0.331 oz
2 tbsp	18.75 g	0.661 oz
¼ cup	37.5 g	1.32 oz

Yeast packet & spoon quick reference

One standard packet of active dry yeast is 7 g = ¼ oz = 2¼ teaspoons — the same for active dry and instant. These are the amounts people look up most:

Active dry yeast — spoons, packets and grams
Amount	Weight
2 teaspoons	about 6 g
2¼ teaspoons (1 packet)	7 g (¼ oz)
1 tablespoon	about 9 g
8 grams	about 2½ teaspoons

How to measure active dry yeast

One standard packet = 7 g = 2¼ tsp = ¼ oz, the same as instant yeast. About 3 g/tsp. Active dry traditionally proofs in warm water first, though King Arthur considers it optional.

Because a cup measures volume rather than weight, the most reliable way to measure active dry yeast is with a digital kitchen scale. If you are working from cups, keep your technique consistent every time so your results are repeatable. For more, see our guide on baking by weight versus volume.

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Substitutes for active dry yeast

1:1 by weight with instant yeast (King Arthur Baking)
Instant yeast can replace active dry 1:1; dough may rise faster. Active dry traditionally proofs in warm water first, though King Arthur considers it optional.
Reduce 25% in bread machines (King Arthur Baking)
Bread-machine recipes call for instant yeast; if using instant in place of active dry, reduce instant by 25% to prevent over-rising.

See all active dry yeast substitutes, ratios and sources →

Compare active dry yeast

Active dry yeast vs Instant yeast

Active dry yeast conversions: FAQ

Why doesn't a teaspoon of active dry yeast weigh the same as a teaspoon of water?

A teaspoon measures volume, not weight. Active dry yeast is less dense than water (about 3.13 g versus 4.9 g per teaspoon), so the same volume has a different weight. Weighing in grams is the most accurate way to measure it.

What is the difference between instant and active dry yeast?

They weigh the same — one packet is 7 g (2¼ tsp) for both. The difference is potency: instant yeast has more live cells and can go straight into the dry ingredients, while active dry is a little weaker and is traditionally dissolved in warm liquid first. To use active dry in place of instant, add about 25% more.

How many grams is a teaspoon of yeast?

About 3 grams per level teaspoon, for both instant and active dry. That puts a 2¼-teaspoon packet at 7 grams (¼ oz).

Common active dry yeast conversions

Quick-answer pages for the conversions people search for most.

¼ tsp to grams

¼ teaspoon active dry yeast ≈ 0.781 g

½ tsp to grams

½ teaspoon active dry yeast ≈ 1.56 g

1 tsp to grams

1 teaspoon active dry yeast ≈ 3.13 g

2 tsp to grams

2 teaspoons active dry yeast ≈ 6.25 g

½ tbsp to grams

½ tablespoon active dry yeast ≈ 4.69 g

1 tbsp to grams

1 tablespoon active dry yeast ≈ 9.38 g

2 tbsp to grams

2 tablespoons active dry yeast ≈ 18.75 g

3 tbsp to grams

3 tablespoons active dry yeast ≈ 28.13 g

Related converters

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* Conversion figures are typical average weights for one US customary cup (236.6 ml), based on the King Arthur Baking Ingredient Weight Chart and cross-referenced with the U.S. Department of Agriculture FoodData Central database. Actual weight varies with packing, brand and humidity — see our methodology.