Exactus Labs

Precision tools for occupational health and safety.

Exactus Labs builds calculators and assessment tools for occupational/industrial health and hygiene professionals. Built to standard. Free to use.

Browse tools What this is
Tools

Available now

Each tool is calibrated to published regulatory or consensus standards. No guesswork, no proprietary models.

Noise Exposure Calculator Free
Dose, TWA, peak exposure, and hearing protector adequacy against OSHA, NIOSH, ACGIH, and Australian HWSA 2022.
Chemical Exposure Calculator Coming soon
TWA and STEL assessments against ACGIH TLVs, OSHA PELs, and jurisdictional workplace exposure standards.
NORM / Radiation Dose Estimator Coming soon
Occupational radiation dose estimation for NORM-handling environments.
Principles

Built for the work, not for show.

Three things every tool here commits to.

Standards-grounded
Calculations cite the regulatory or consensus source. Where standards disagree, the tool shows the disagreement rather than picking for you.
Transparent
Formulas and constants are shown in each tool. Nothing is hidden behind a proprietary engine.
Field-useful
Output is structured for documentation: exportable reports, clear verdicts, and the limits the calculation is valid within.