Fresh to Dried Herb Converter (3 : 1 by volume, tsp, tbsp, ml)

Understanding the fresh to dried herb converter — concept and principle

This converter swaps fresh herbs for dried ones in a recipe, or the other way round, using the standard 3 : 1 volume ratio from Cooperative Extension substitution tables. It gives the answer in teaspoons, tablespoons and millilitres, so you can cook from whatever you have in the cupboard.

Three to one: with the default inputs the result is 2 tsp dried (≈ 9.9 mL).

How it is calculated

The amount is first converted to teaspoons: 1 tbsp = 3 tsp, 1 cup = 48 tsp, 1 ml = 1 ÷ 4.929 tsp.
Fresh → dried: divide by 3. Dried → fresh: multiply by 3.
The result is shown in tsp, tbsp (÷ 3) and ml (× 4.929).

The principle

Leafy herbs are mostly water. Drying removes that water and concentrates the aromatic oils that carry the flavour, so a smaller volume of dried herb does the same job as fresh. Extension services use 1 tablespoon of fresh, finely cut herbs to 1 teaspoon of dried herbs. Since a tablespoon is three teaspoons, that is a 3 : 1 ratio by volume. Ground herbs are stronger still than crushed dried leaves, because grinding packs more herb into each spoon and releases the oils.

Worked example

Default inputs: 2 tablespoons, fresh herbs → dried.

Amount in teaspoons = 2 × 3 = 6 tsp.
Dried = 6 ÷ 3 = 2 tsp.
In tablespoons = 2 ÷ 3 = 0.67 tbsp.
In millilitres = 2 × 4.929 = 9.9 ml.

Each point is the calculator re-run with only “Amount in the recipe” changed; the gold point is the default example. Change the inputs above and this chart follows your numbers.

Amount in the recipe	Converted amount (tsp)
0.5	0.5
1	1
1.5	1.5
2	2
2.5	2.5
3	3
4	4

How to read the result

Use the converted amount as a starting point and taste. Dried herbs lose strength over time, so old jars may need a little more. Add dried herbs early in cooking so they have time to soften and release flavour; add delicate fresh herbs such as basil, parsley or coriander near the end. Some herbs, such as basil and chives, lose much of their character when dried, so the swap works best for robust herbs like oregano, thyme and rosemary.

Common mistakes

Using the same amount of dried herb as fresh, which overpowers the dish.
Treating ground herbs like crushed leaves; start with less.
Packing fresh herbs loosely in one recipe and tightly in another.
Mixing up tsp and tbsp.

Keep in mind: The 3 : 1 ratio is a general kitchen guide. Herb strength varies with variety, freshness and storage, so adjust to taste.

Frequently asked questions

How much dried herb equals 1 tablespoon of fresh?

About 1 teaspoon of dried herb.

How do I convert dried herbs to fresh?

Multiply the dried amount by 3; 1 teaspoon dried is about 1 tablespoon fresh.

Is ground herb the same as dried leaves?

No. Ground herb is stronger, so use less and add it gradually.

Sources: New Mexico State University Cooperative Extension, Guide E-131 "In a Pinch Ingredient Substitution" · Iowa State University Extension AnswerLine, "Substitutions for Common Foods"

Checked 9 Nov 2026. New Mexico State University Cooperative Extension, Guide E-131 “In a Pinch Ingredient Substitution” (rev. 2016): herbs, fresh and finely cut, 1 Tbsp = 1 tsp dried herbs; Iowa State University Extension AnswerLine, “Substitutions for Common Foods” (same ratio). 1 US tsp = 1/6 US fl oz = 4.92892 ml.

Your numbers