About this tool
The Fresh ↔ Dried Herb Converter swaps between fresh and dried herb quantities so a recipe written for one still works with what is in your kitchen. Choose the direction, enter the amount in teaspoons or tablespoons, optionally pick the herb, and the tool returns the equivalent measure rounded to friendly kitchen fractions.
The conversion follows the widely used 3:1 rule: because drying concentrates a herb's flavor, roughly 3 parts fresh equals 1 part dried. Converting fresh to dried divides by three (1 tablespoon fresh ≈ 1 teaspoon dried), and dried to fresh multiplies by three. This ratio holds well for common leafy culinary herbs — basil, oregano, thyme, mint, dill, sage, and parsley — which is why they share the same math here.
A couple of herbs deserve a note. Rosemary is potent and its dried needles stay woody, so measure dried rosemary a touch conservatively and crush it. Very delicate herbs like parsley lose more aroma when dried, so fresh is strongly preferred when you can get it. Results are shown both as a practical measure (teaspoons, switching to tablespoons once you pass three) and as a total in teaspoons, using ⅛, ¼, ⅓, ½ style fractions. Everything runs locally in your browser.