SAG Calculator

SAG Calculator

Calculate sag percentage or target sag length from a total travel distance.

Last updated: June 2026 | By Patchworkr Team

Calculation steps
Sag % = sag amount / total travel x 100
20 / 100 x 100 = 20%
Remaining travel: 80 mm
Sag percentage
20%

What Is Sag?

Sag describes how much a span drops relative to the total travel distance.

How To Use The SAG Calculator

  1. Choose sag percentage or target length mode.
  2. Enter the total travel distance.
  3. Enter the sag amount or desired percentage.
  4. Read the result in the panel on the right.

Related Tools