Free · No signup · Runs in your browser

Free GHS Tools & Software

Build compliant labels, pick the right pictograms by jurisdiction, and run the classification calculators — free GHS software backed by a database of 4,000+ substances with harmonised CLP classifications.

11 tools 4,178 substances CLP Annex VI data

Interactive tools

GHS Label Maker

Build print-ready GHS labels sized to your actual container per CLP Annex I — auto-filled pictograms, signal word and H/P statements for 4,000+ substances, your logo, PDF/SVG export. Free, no signup.

Build a Label → Jurisdiction-aware

GHS Pictogram Selector

Pick hazard classes and categories to get the correct label pictograms, signal word and hazard statements for UN GHS, EU CLP, GB CLP and OSHA HazCom — with CLP Article 26 precedence applied and explained.

Open the Selector → Transport

GHS vs ADR/DOT Inspector

Compare workplace GHS classification with ADR/DOT transport requirements: ADR class, packing group and transport placards for any substance in the database.

Open the Inspector →

GHS classification calculators

Nine boundary-tested calculators — one per hazard pictogram. Each lives on its pictogram page alongside the hazard explanation, the official SVG download and the full substance list.

GHS01

Explosive screening (waiver check)

The GHS screening step for explosives ahead of UN testing.

GHS02

Flash point → GHS category

Classify a flammable liquid from its closed-cup flash point.

GHS03

Oxidizer screening (waiver check)

The GHS screening step for oxidizers ahead of UN testing.

GHS04

Critical temperature → gas group

Assign the gas-under-pressure group from critical temperature.

GHS05

pH → corrosion trigger

Check whether extreme pH triggers skin/eye corrosion classification.

GHS06

LD50 / LC50 → acute toxicity category

Assign the acute toxicity category from LD50 or LC50 values.

GHS07

LLNA EC3 → skin-sensitiser sub-category

Assign skin-sensitisation sub-category 1A or 1B from LLNA EC3.

GHS08

Viscosity → aspiration hazard

Check aspiration hazard for hydrocarbons from kinematic viscosity.

GHS09

Aquatic L(E)C50 → environmental class

Classify aquatic hazard from the lowest acute L(E)C50 / EC50.

Why free, browser-based GHS tools?

Most GHS labeling software is desktop-based and licensed per seat. These tools cover the everyday tasks — checking a classification boundary, picking pictograms for a jurisdiction, printing a correctly sized label — directly in the browser, using harmonised classifications from CLP Annex VI. For managing a full SDS library, authoring Safety Data Sheets or running a chemical register, see our SDS compliance guides.