RAMP GRADIENT CALCULATOR

Use our ramp gradient calculator to determine the minimum ramp length required in accordance with AS1428.1 and NCC accessibility requirements.

Vertical Rise (mm) Select Gradient

Ramp Length: 4.20 m

Example: 300mm rise at 1:14 = 4.2m ramp length

Note: Ramp design requirements may vary depending on rise, landings, handrails, kerbs, slip resistance and applicable NCC / AS1428.1 provisions. Professional assessment may be required.

Gradient	Typical Use
1:20	Preferred accessible path
1:14	Access ramps
1:10	Short step ramps only