Field Tools

HSE Calculators

Quick screening calculations for site work. Everything runs on your device. Nothing is uploaded or stored.

⚠ Screening tools only. These give indicative results to support, never replace, professional judgement, calibrated instruments and the current published standard. Threshold tables change between editions. Always verify against the standard that applies in your jurisdiction before acting on a result.

Heat Stress: WBGTACGIH TLV screening · ISO 7243

Natural wet bulb, Tnwb (°C)

Globe, Tg (°C)

Dry bulb, Tdb (°C)

Environment Workload Acclimatisation

Noise Exposure: Dose & TWAOSHA 1910.95 · NIOSH / ACGIH

Standard Exposure segments: level (dBA) & duration (hours)

Chemical Exposure: 8-hour TWATime-weighted average vs OEL

Sample segments: concentration & duration (hours)

Occupational exposure limit (same units, optional)

Fall Clearance RequiredFall-arrest clearance below the anchor

Connecting device

Lanyard length (m)

Anchor above D-ring (m)

D-ring to feet (m)

Safety margin (m)

Sling Angle: Tension per LegRigging load factor

Load (kg)

Number of legs

Angle from horizontal (°)

Unofficial study and field aid: not affiliated with, endorsed by, or connected to BCSP, ACGIH, OSHA, NIOSH or ISO. Standard names are referenced only to identify the method used.