Free surveyor's tool
Grade & slope calculator
Type into any box and the rest update instantly. Converts between 1 in X, percent grade, degrees and mm per metre, or work it out from a rise and a run.
Convert a grade
Fill in any one box.
From a rise and run
Height difference over a horizontal distance.
Ratio–
Grade–
Angle–
Fall over 10 m–
Quick reference
Common grades. Tap a row to load it.
| 1 in | Grade | Angle | mm/m |
|---|
Setting out a grade?
Hire a grade or pipe laser and get it right first time.