ergonomics · Free · Open Source · MIT

Manual Handling MAC Calculator

HSE UK Manual Assessment Charts. Based on HSE UK MAC tool. Results shown with the full formula so you can verify. Zero signup, zero tracking, zero data sent to a server — all calculation is client-side.

Inputs
HSE UK MAC tool · GREEN
4
Low risk — no action
Raw JSON result
{
  "color": "green",
  "score": 4,
  "action": "Low risk — no action"
}
Overview

About the Manual Handling MAC Calculator

HSE UK MAC tool (Manual Assessment Charts) simplified banding — Green / Amber / Red. A faster alternative to NIOSH Lifting Equation for field use.

Formula
Weighted score: load + distance + frequency + posture
Regulation

HSE UK MAC tool

How to use

Step-by-step: using the Manual Handling MAC Calculator

  1. 1
    Enter load, carry distance, frequency, postural adjustments.
Who uses this calculator

Used by safety professionals worldwide

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NIOSH Lifting Calculator
Recommended Weight Limit + Lifting Index

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Free for any website, blog, or course — MIT / CC BY 4.0. Attribution stays visible.

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