WISHA Lifting Calculator

Overview

The WISHA Lifting Calculator is an ergonomic tool — base d on the NIOSH Lifting Equation — that provides a simplified, user -friendly interface for calculating the recommended weight limit and lifting index for manual lifting tasks. The calculator guides users through the key task variables — load weight, horizon tal distance, vertical height, asymmetry, and lift frequency — and produces a recommended weight limit and lifting index in a format that is accessible to non-specialist users including supervisors and safety officers. WISHA ergonomics guidelines also cove r pushing, pulling, and carrying tasks — making the Washington State ergonomics framework one of the most practically comprehensive regulatory ergonomics toolsets available.