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 TRIR and DART from recordable cases and actual hours worked. Includes worked examples, calculation limits, and dated BLS industry comparisons.
Open tool fall protectionFall Clearance Calculator
Calculate fall clearance distance for personal fall arrest systems (PFAS) from lanyard length, deceleration distance, D-ring shift, worker height, and safety margin.
Open tool environmentalHeat Stress Calculator
Explore estimated heat conditions and the factors needed for a workplace heat assessment. Includes NIOSH guidance; estimates do not establish safe work/rest limits.
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 Calculator
Explore boom outreach and measured rear swing geometry, with worked examples and OSHA hazard-control references. Does not establish safe clearance or lifting capacity.
Open tool excavationExcavation & Trenching Calculator
Explore excavation slope geometry and protective-system considerations. Includes worked examples and OSHA references; does not design or approve shoring.
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
Estimate recommended weight limit and lifting index for applicable two-handed tasks. Review assumptions, examples, and NIOSH method limitations.
Open tool electricalArc Flash Calculator
Explore a simplified arc-flash estimate and its limitations. Learn why an equipment-specific assessment is needed for PPE, labels, and energized-work decisions.
Open tool confined spaceConfined Space Ventilation Calculator
Calculate airflow and air-change geometry for a confined space. Review assumptions and entry-control requirements; airflow alone cannot authorize 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 Angle Calculator
Explore ladder length, setback, and angle with a worked 4-to-1 example. Distinguish vertical rise from working length and check OSHA setup requirements.
Open tool electricalMinimum Approach Distance (MAD) Calculator
Look up qualified-worker AC minimum approach distances in OSHA tables R-6/R-7, apply altitude correction, and review worked examples and table conditions.
Open tool10 free toolbox talks
Your next safety talk is already written.
Skip the blank page. Pick a talk, gather your team, and walk into your next briefing prepared.
- 10 ready-written toolbox talks
- Questions to get your team talking
- Printable sign-in sheet included