Free online EHS calculators for safety professionals. Calculate safety rates, estimate injury costs, assess heat stress, and size SPCC containment systems. No login required.
Safety Rate & Injury Calculators
TRIR Calculator
Calculate your Total Recordable Incident Rate (TRIR) per 200,000 hours worked. Compare to national averages by industry.
Free Online ToolDART Rate Calculator
Calculate your Days Away, Restricted, or Transferred (DART) rate per 200,000 hours worked.
Free Online ToolSeverity Rate Calculator
Measure the impact of workplace injuries using lost workdays per 200,000 hours worked and average severity per incident.
Free Online ToolInjury Cost Calculator
Estimate direct and indirect costs of workplace injuries using OSHA multipliers and calculate the true cost impact.
Free Online ToolWorkplace Safety & Environmental Calculators
Heat Index Calculator
Enter temperature and humidity to determine the heat index, OSHA risk level, and recommended work/rest schedules aligned with NIOSH WBGT guidelines.
Free Online ToolGHG Emissions Calculator
Calculate your facility's carbon footprint using EPA emission factors. Covers Scope 1, 2, and 3: electricity, fuel combustion, fleet vehicles, refrigerants, and more.
Free Online ToolSPCC & Containment Calculators
Tank Volume Calculator
Calculate total capacity and partial fill volume for horizontal cylinders, vertical cylinders, and rectangular tanks in gallons, barrels, and cubic feet.
Free Online ToolSpill Volume Calculator
Estimate spill pool size, pipe leak flow rates, tank orifice discharge, and drainage time for SPCC plans and spill response.
Free Online ToolContainment Volume Calculator
Calculate net secondary containment volume for rectangular, circular, and custom-shaped containments after tank displacement and precipitation.
Free Online ToolContainment Rainfall Calculator
Look up your 25-year, 24-hour design storm depth and calculate precipitation displacement volume for SPCC containment sizing.
Free Online Tool
