What does 2.5cm of fresh ginger equals dried?

Approximately 2.5 cm of fresh ginger is equivalent to about 1 teaspoon of dried ginger powder. Fresh ginger has a more intense flavor than dried, so you may want to adjust the amount based on your taste preferences in recipes. Generally, the conversion ratio is about 1 tablespoon of fresh ginger to 1 teaspoon of dried ginger.