Calculating Percentage increase in MPG

Enter miles per gallon AFTER installing an HHO Hydrogen Generator:

Click this button to calculate the percentage change in Miles per Gallon: %

Calculating Projected Savings

Enter the amount you spend on fuel every week: $

Click this button to calculate the projected savings in Dollars:

Percent	Weekly savings	Yearly savings
10%	$	$
20%	$	$
30%	$	$
40%	$	$
50%	$	$