Bradford Score Calculator
Use this tool to calculate the Bradford Factor (also called Bradford Score): S² × D, where:
- S = number of absence spells/incidents
- D = total days absent
If you enter a list, the calculator will auto-fill spells and total days.
What is the Bradford Score?
The Bradford Score is a simple formula some employers use to monitor patterns of employee absence. It gives more weight to frequent short absences than to one long absence. The idea is that repeated unplanned absences may create more disruption than a single continuous absence.
The standard formula is:
Bradford Score = S × S × D
Where S is the number of separate absence incidents and D is the total number of days absent in a defined period (often 52 weeks).
Why frequency matters in this formula
Because the number of spells is squared, the score rises quickly when absences are frequent. For example:
- 1 spell and 10 days absent: 1² × 10 = 10
- 5 spells and 10 days absent: 5² × 10 = 250
Same total days, very different score.
How to use this Bradford score calculator
Option 1: Manual inputs
Enter the number of spells and total absent days directly, then click Calculate Score.
Option 2: Spell list input
Type each absence spell length separated by commas (for example, 1,1,2). The calculator will count spells and sum days for you automatically.
Worked examples
- Example A: 2 spells, 6 days total → 2² × 6 = 24
- Example B: 4 spells, 6 days total → 4² × 6 = 96
- Example C: 6 spells, 9 days total → 6² × 9 = 324
Common Bradford trigger bands (example only)
There is no universal legal threshold. Different organizations set their own policy triggers. A common example looks like this:
| Score Range | Typical Interpretation |
|---|---|
| 0 | No recorded absence |
| 1–49 | Low concern |
| 50–199 | Moderate concern / monitor |
| 200–499 | High concern / review meeting |
| 500+ | Very high concern / formal action in some policies |
Important limitations and fair use
The Bradford Score is a blunt metric. It should not be used alone to make decisions. Good absence management also considers:
- Medical evidence and occupational health advice
- Disability, pregnancy, and other protected legal contexts
- Workload, burnout, and mental health factors
- Team communication and return-to-work support
A high score does not automatically mean poor conduct. It only indicates a pattern that may need a conversation.
FAQ
Can the Bradford Score use half-days?
Yes. Some workplaces include partial days (for example, 0.5). This calculator supports decimal day values.
What period should I use?
Most employers use a rolling 52-week period, but policy varies. Use whatever period your organization defines.
Is a higher score always bad?
Not necessarily. It may signal operational disruption, but context is essential. A fair process always reviews individual circumstances.
Bottom line
The Bradford Score is best used as an early-warning indicator, not a final judgment. Use this calculator to get the number quickly, then pair that number with policy, context, and supportive management practice.