Occupational Health Calculators: Noise, Heat & Lifting

Start from your question

What are you working out?

What is this worker's noise dose over the shift?Occupational Noise Dose TWA Calculator How much protection does this hearing protector really give?Hearing Protector Attenuation Calculator What is the recommended weight limit for this lift?Revised NIOSH Lifting Equation Calculator How does this WBGT reading compare with our heat-stress thresholds?WBGT Heat Stress Screening Calculator What is the daily A(8) vibration exposure from these tasks?Hand Arm Vibration A8 Calculator What is the shift-average exposure to this airborne contaminant?Airborne Contaminant TWA Ceiling Calculator

The calculators

All 6 occupational health and ergonomics calculators

Airborne contaminant exposure assessment

Airborne Contaminant TWA Ceiling Calculator

Combines concentration-duration entries into an actual-shift average, reference-period equivalent, entered-limit ratios, and a separate ceiling screen without embedding chemical exposure-limit data.

Physical-agent exposure assessment

Hand Arm Vibration A8 Calculator

Combines up to 12 task-specific hand-arm vibration exposures into daily A(8), HSE exposure points, threshold utilization, and a dominant-task result.

Hearing protection selection

Hearing Protector Attenuation Calculator

Estimates a protected A-weighted level from an individual fit-test Personal Attenuation Rating (PAR) or OSHA Noise Reduction Rating (NRR) adjustment methods.

Noise exposure assessment

Occupational Noise Dose TWA Calculator

Compares the same multi-segment workday under OSHA permissible-exposure-limit, OSHA hearing-conservation, and NIOSH recommended-exposure-limit rules.

Manual lifting ergonomics

Revised NIOSH Lifting Equation Calculator

Calculates single-task Recommended Weight Limit and Lifting Index at the origin and, when significant destination control is required, at the destination.

Occupational heat-stress screening

WBGT Heat Stress Screening Calculator

Calculates measured and clothing-adjusted WBGT from natural wet-bulb, globe, and conditionally required dry-bulb sensor readings, then compares the result with user-entered thresholds.