Kynric Trades Calculators

Ramp Calculator (AU AS 1428.1)

Calculate ramp length and grade, and check against the AS 1428.1 maximum accessible grade.

Estimate only — not a substitute for a licensed tradesperson, a certified engineer, or sign-off from your local building surveyor. Verify against current standards and site conditions before ordering materials or starting work.

Result

Minimum run length
4,200mm
Resulting grade
7.14%

Checks against the commonly-cited 1:14 max grade for a straight AS 1428.1 accessible ramp run - confirm landing/handrail requirements and any run-length limits separately.