Fatal Accident Frequency Rate (FAFR) Calculator

What is Fatal Accident Frequency Rate?

A question ' How often do injuries occur?' is replied by the frequency rate which is defined as the disabling (Fatal Accident) injuries per 1000000 (Million) man-hours worked.

F = (Number of Fatal Accident injury x 1000000) / Number of manhours worked

If the injury does not cause loss of time in the period in which it occurs but in a subsequent period the injury should be included in the frequency rate of the period in which the loss of time begins.

If an injury causes intermittent fatality, it should only be included in the frequency rate once that is, when the first loss of time occurs.

Since frequency rate F, is based on the Fatal Accident injuries reportable to the statutory authorities, it may be used for official purposes only. In all other cases frequency rate F, should be used for comparison purposes.

In some country, the frequency coefficient (F) h determined by

F = (Number of Fatal Accident injury x 1000000) / Number of manhours worked

Frequency Rate Calculator

Noumber of Fatal Accident injury



Number of Manhours worked






Frequency Rate

Calculate FA Frequency Rate Here