Interactive Calculators
Safety Calculators & OSHA Tools
Free tools for TRIR calculation, arc flash safety, confined space ventilation, heat stress prevention, fall protection requirements, crane safety, and hazard identification.
These tools are for general informational use only and do not replace site-specific review by qualified safety professionals. See our Terms of Service for details.
TRIR Calculator
Calculate Total Recordable Incident Rate (TRIR calculation), DART rate, and LTIR for OSHA reporting and safety performance review.
Open tool fall protectionFall Protection Calculator
Check fall protection requirements and OSHA-compliant fall clearance distances for personal fall arrest systems.
Open tool environmentalHeat Stress Calculator
Support heat stress prevention with WBGT estimates and recommended work/rest schedules based on ACGIH/NIOSH guidance.
Open tool environmentalNoise Exposure Calculator
Evaluate workplace noise exposure levels (TWA and Dose %) based on OSHA 29 CFR 1910.95 standards.
Open tool heavy equipmentCrane Swing Radius Tool
Support crane safety by calculating swing radius and hazard zone boundaries for lift planning and OSHA 1926.1424 compliance.
Open tool excavationExcavation & Trenching Calculator
Determine OSHA-compliant sloping, benching, or shoring requirements based on soil type and excavation depth.
Open tool formsPre-Task Plan (PTP) Form
Identify task-specific hazards, coordinate with nearby trades, and confirm safety controls before work starts.
Open tool formsJob Hazard Analysis (JHA) Form
Break down tasks, identify hazards, assess risk, and implement controls using the hierarchy of controls.
Open tool ergonomicsNIOSH Lifting Equation Calculator
Assess manual lifting risk and determine a Recommended Weight Limit (RWL) to prevent lower back injuries.
Open tool electricalArc Flash Calculator
Estimate incident energy, arc flash boundary, and required PPE level for electrical safety NFPA 70E planning.
Open tool confined spaceConfined Space Ventilation Calculator
Support confined space safety by calculating air exchanges and fan run time before confined space entry.
Open tool risk assessmentRisk Assessment Matrix Tool
Use hazard identification and a 5x5 matrix to score, prioritize, and control workplace hazards.
Open tool fall protectionLadder Safety Calculator
Ensure proper setup angle using the 4-to-1 rule with correct base distance, ladder length, and working heights.
Open tool electricalMAD Calculator
Calculate OSHA minimum approach distances for work near energized high-voltage lines per 29 CFR 1910.269 and 1926.960.
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