OSHA 200,000-hour basis
LTI & injury rates
Calculate a days-away case rate, with optional total recordable and DART rates.
Open calculatorSENTIVO / FREE TOOLS
Safety data.
Clear calculations.
Calculate, understand and review. Five tools with definitions, transparent formulas and sources beside the result.
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OSHA hours-worked guidance
Worked hours
Estimate a group’s actual regular and additional hours for a defined reporting period.
Open calculatorUS general industry · 5 dB exchange
Noise dose & TWA
Combine measured steady noise periods using OSHA Appendix A’s reference-duration method.
Open calculatorUS general industry · single substance
Exposure TWA
Combine same-substance exposure periods over a complete eight-hour assessment window.
Open calculatorSentivo administrative metric
Training hours & completion
Calculate completed and scheduled training person-hours, completion percentage and outstanding participants.
Open calculatorBuild your monthly HSE report.
Bring incident data, training person-hours, inspections, corrective actions and environmental measures into one printable management report.
Open Monthly HSE Report Builder ↗Choose the right calculation basis.
Injury rates use OSHA’s 200,000-hour incidence-rate basis. Noise and concentration TWA tools state their US general-industry scope. Training hours and completion are Sentivo administrative metrics. Every tool explains its purpose and limits before you interpret the result.
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