Estimated Spark Size:

Spark Length (L):
Input Power (P):
*Move (TAB) to next field to update result

A rough estimate of spark length can be made by entering in the output power of your transformer,or....

....a rough estimate of the amount of power required for a given length of spark can be found by entering in the desired length.

Moving between the boxes by clicking or using the 'TAB' button on your keyboard, will update the result.