Ramp calculator Enter height in centimetresEnter the height you require the ramp to rise. This may be the difference in level between the internal floor and external area of a building entranceenter the height that ramp will need to rise to, this may be the level difference between inside and outside of building entranceMaximum length of ramp required in cmNote you will require an additional minimum 150cm for a clear landing area at top and bottom of rampMinimum length of ramp required in cmNote you will require an additional minimum 150cm for a clear landing area at top and bottom of rampUntitled