environmental
WBGT Heat Stress Calculator
Free WBGT heat stress calculator. Outputs work/rest ratio per ACGIH TLV. Critical for GCC summer working conditions, OSHAD heat safety, midday-work ban compliance.
Result
{
"wbgt": 34,
"riskLevel": "extreme",
"acgihWorkRestRatio": "Stop work",
"regulation": "ACGIH TLV / ISO 7243 / NIOSH Heat Stress Criteria"
}Formula
WBGT = 0.7·Tw + 0.2·Tg + 0.1·Td (outdoor with sun)Regulation
ACGIH TLV / ISO 7243
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Free for any website, blog, or course — MIT / CC BY 4.0. Attribution stays visible.
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