This calculator can be used to calculate delta-V required to transfer from one cicrular orbit to another using the Hohmann transfer. To convert that into fuel, use the Fuel Calculator.
Reference
Body: The body you're orbiting.
From altitude: Your altitude above sea level.
To altitude: The altitude above sea level you wish to go to.
First burn: The delta-V required for the burn that takes you from your initial circular orbit into the elliptic Hohmann transfer orbit.
Second burn: The delta-V required for the burn that takes you from the Hohmann transfer orbit into your final circular orbit.