Sling Load Calculator Checklist for Fast Planning

Published: September 2025 | By SlingCalc Engineering Team

A sling load calculator gives you the total force on each sling, the split between legs, and the required working load limit. Use this checklist to confirm you captured every input before approving a lift.

Before You Open the Calculator

Gather verified load weight, including rigging gear.
Measure pick point locations and any offsets from the load center.
Confirm sling type, diameter, and rated capacity from the tag.

Inside the Calculator

Enter load weight and number of sling legs.
Input pick point spacing and hook position to define the geometry.
Review the per-leg load, total force, and recommended safety factor.
Toggle between vertical, basket, or choker to see how the load shifts.

What to Verify

Every sling leg must stay below its working load limit at your chosen safety factor.
Reduction factors are applied when using basket or choker hitches.
Angular loading adjustments appear when the hook sits off-center.

Why Use SlingCalc

SlingCalc tracks these checks in real time as you adjust the 3D model. Forces, angles, and safety factors stay visible, and any leg that exceeds its rated load turns red. Save the scenario, attach it to your job packet, and give the crew a clear plan.

Need a second opinion? Share the SlingCalc link so another engineer can review the same load case in minutes.