🌿 Fresh to Dry Herb Conversion Calculator
Figure out how much dried herb to use in place of fresh (or vice versa) using the classic 3-to-1 substitution ratio.
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The 3-to-1 herb rule
Drying an herb removes most of its water content, which concentrates the flavor. The widely used culinary rule of thumb is that dried herbs are about three times stronger than fresh, so you need roughly three times as much fresh herb to match the flavor of a given amount of dried herb.
This calculator applies that standard 3:1 ratio in either direction: enter a fresh amount to see the dried equivalent, or enter a dried amount to see how much fresh herb to substitute.
- Example: 1 teaspoon of dried oregano ≈ 1 tablespoon (3 teaspoons) of fresh oregano.
- Very delicate herbs (like basil or cilantro) and very potent ones (like rosemary) can vary somewhat from the 3:1 average, so taste and adjust as you cook.
This is a general cooking guideline for home and educational use, not a precise scientific measurement — recipes and personal taste may call for small adjustments.
Last reviewed August 2026