Examples
Examples
Try the starting example
- Recorded incidents (incidents)
- 4
- Measured exposure in selected units (km or vehicle-hours)
- 200000
- Chosen rate denominator scale (same exposure units)
- 100000
- Exposure unit label: km or vehicle-hours
- km
- Exposure-normalized incident rate
- 2
- Rate unit statement
- Incidents per 100000 km
- Exposure per recorded incident
- 50000
Try another scenario
- Recorded incidents (incidents)
- 6
- Measured exposure in selected units (km or vehicle-hours)
- 200000
- Chosen rate denominator scale (same exposure units)
- 100000
- Exposure unit label: km or vehicle-hours
- km
- Exposure-normalized incident rate
- 3
- Rate unit statement
- Incidents per 100000 km
- Exposure per recorded incident
- 33,333.333333
Calculation method
Calculation method
Exposure-normalized incident rate
incidents/exposure*scale.
Rate unit statement
Incidents per <scale> <supplied exposure unit>.
Exposure per recorded incident
exposure/incidents; if incidents=0 return No incidents observed.
Symbols and units
- a
- Recorded incidents (incidents)
- b
- Measured exposure in selected units (km or vehicle-hours)
- c
- Chosen rate denominator scale (same exposure units)
- d
- Exposure unit label: km or vehicle-hours
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- Descriptive rate under a consistent user incident definition and exposure unit. Denominator scale is user chosen, not a regulatory metric. No causal safety comparison or confidence interval inferred. Supported limits: Incidents nonnegative integer; exposure,scale>0; unit label exactly km or vehicle-hours.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.