incident rates

Frequency Rate Calculator

Calculate Accident Frequency Rate (AFR) using the international 1,000,000-hour base. Used by HSE UK, IOGP, ADNOC, Aramco, QatarEnergy.

Reportable accidents

Total hours worked

Result

{
  "rate": 2.5,
  "base": 1000000,
  "formula": "(5 × 1,000,000) ÷ 2,000,000"
}

Formula

AFR = (Reportable Accidents × 1,000,000) ÷ Hours Worked

Regulation

HSE UK / IOGP

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