A one inch piece of fresh, grated ginger (generally yielding 1 tablespoon) equals approximately 1/8 teaspoon ground (dried) ginger. Source: http://www.evitamins.com/healthnotes.asp?ContentID=3602003
It is a spice
Typically, 1 teaspoon of ginger paste is equivalent to approximately 1/2 inch of fresh ginger. However, this can vary depending on the brand and concentration of the paste. It's always best to refer to the specific instructions on the packaging or adjust to taste when substituting ginger paste for fresh ginger in recipes.
One inch piece of ginger typically yields about one tablespoon of minced ginger. This is because when ginger is minced, it becomes more compact and takes up less space compared to the original piece. Therefore, one inch piece of ginger is roughly equivalent to one tablespoon of minced ginger.
Avoid doing this. The proportions unbalance a recipe when you substitute ground for freshly grated ginger.
1 inch of ginger grated will produce about 4 teaspoons.
To substitute fresh ginger with ground ginger in a recipe, use 1/4 teaspoon of ground ginger for every 1 tablespoon of fresh ginger called for in the recipe. Adjust the amount to taste, as ground ginger is more concentrated than fresh ginger.
When all else fails, go to "Joy of Cooking" --see "equivalents and or substitutions, and I quote: 1 Tsp raw ginger = 1/8 tsp pwd. This info is usually on the spice container, but I use a less expensive brand and it does not have the info. cmg
Herbs and spices (like ginger) have so few calories that they are essentially counted as being "calorie free". It is usually less than 5 calories per serving.
As a general guideline, you can use 1/4 teaspoon of dried ginger for every 1 tablespoon of fresh ginger in a recipe. Adjust to taste based on your preference for ginger flavor.
For the best flavor and health benefits, it is recommended to add about 1-2 teaspoons of fresh grated ginger to a cup of tea.
I would just use the same amount because ginger paste is basically really finely miced ginger. Maybe cut down a slight amount if your not a huge fan of ginger.