Business

Instant, private, and free

Bradford Factor Calculator.

Calculate the Bradford Factor from absence occurrences and total absence days.

On-device calculationNo signup

Set your values

Results update as you type.

02 / ANSWER

Absence spells

Total absent days

Bradford score

Score = absence spells² × absent days. Use this as a descriptive HR metric, not as a standalone employment decision.

FAQs

What does the Bradford Factor measure?

The formula weights frequent absence instances more heavily than the same number of days in one absence; employers should follow local policy and employment law.

Use Cases

Monitor employee absence patterns

HR professionals can use the Bradford Factor to identify employees with frequent short-term absences, enabling early intervention and support.

Example: An employee with 4 spells and 8 days absent scores 128, indicating a high-risk pattern.

Inform absence management policies

Managers can use the score to trigger discussions or apply consistent absence management procedures based on organizational thresholds.

Example: A company may set a trigger point at 100 for a formal review.

Frequently Asked Questions

What is the Bradford Factor and how is it calculated?: The Bradford Factor is a formula used in HR to measure the impact of employee absence on a business. It is calculated as: Bradford Factor = (Number of absence spells)² × (Total number of days absent). For example, 5 spells and 10 days gives a score of 250.
What does my Bradford Factor score mean?: The score helps identify patterns of absence. Generally, a score below 50 is considered low risk, 50-100 is moderate, 100-200 is high, and above 200 is very high. However, these thresholds vary by organization, and the calculator is for educational purposes only.
Why does the Bradford Factor emphasize frequent short absences?: Because the formula squares the number of spells, it gives more weight to frequent short absences than to occasional long ones. This reflects the disruption caused by many separate absences, which can be more damaging to productivity than a single long absence.

Tips & Common Mistakes

Tips

Ensure you count each separate absence period as one spell, even if it spans multiple days.
Use the calculator to compare scores over different time periods, such as quarterly or annually.
Combine the Bradford Factor with other metrics like total days lost for a fuller picture.
Remember that the Bradford Factor is a guide, not a definitive measure of employee performance.

Common Mistakes to Avoid

Counting each day as a separate spell instead of grouping consecutive days into one spell.
Using the calculator to make disciplinary decisions without considering the context or company policy.
Ignoring the educational limitation notice and treating the score as a formal HR assessment.

Last updated: August 13, 2026

Use Cases

Monitor employee absence patterns

HR professionals can use the Bradford Factor to identify employees with frequent short-term absences, enabling early intervention and support.

Example: An employee with 4 spells and 8 days absent scores 128, indicating a high-risk pattern.

Inform absence management policies

Managers can use the score to trigger discussions or apply consistent absence management procedures based on organizational thresholds.

Example: A company may set a trigger point at 100 for a formal review.

Frequently Asked Questions

What is the Bradford Factor and how is it calculated?

The Bradford Factor is a formula used in HR to measure the impact of employee absence on a business. It is calculated as: Bradford Factor = (Number of absence spells)² × (Total number of days absent). For example, 5 spells and 10 days gives a score of 250.

What does my Bradford Factor score mean?

The score helps identify patterns of absence. Generally, a score below 50 is considered low risk, 50-100 is moderate, 100-200 is high, and above 200 is very high. However, these thresholds vary by organization, and the calculator is for educational purposes only.

Why does the Bradford Factor emphasize frequent short absences?

Because the formula squares the number of spells, it gives more weight to frequent short absences than to occasional long ones. This reflects the disruption caused by many separate absences, which can be more damaging to productivity than a single long absence.

Tips & Common Mistakes

Tips

Ensure you count each separate absence period as one spell, even if it spans multiple days.
Use the calculator to compare scores over different time periods, such as quarterly or annually.
Combine the Bradford Factor with other metrics like total days lost for a fuller picture.
Remember that the Bradford Factor is a guide, not a definitive measure of employee performance.

Common Mistakes to Avoid

Counting each day as a separate spell instead of grouping consecutive days into one spell.
Using the calculator to make disciplinary decisions without considering the context or company policy.
Ignoring the educational limitation notice and treating the score as a formal HR assessment.

Business

Instant, private, and free

Bradford Factor Calculator.

Calculate the Bradford Factor from absence occurrences and total absence days.

On-device calculationNo signup

Set your values

Results update as you type.

02 / ANSWER

Absence spells

Total absent days

Bradford score

Score = absence spells² × absent days. Use this as a descriptive HR metric, not as a standalone employment decision.

FAQs

What does the Bradford Factor measure?

The formula weights frequent absence instances more heavily than the same number of days in one absence; employers should follow local policy and employment law.

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Use Cases

Monitor employee absence patterns

HR professionals can use the Bradford Factor to identify employees with frequent short-term absences, enabling early intervention and support.

Example: An employee with 4 spells and 8 days absent scores 128, indicating a high-risk pattern.

Inform absence management policies

Managers can use the score to trigger discussions or apply consistent absence management procedures based on organizational thresholds.

Example: A company may set a trigger point at 100 for a formal review.

Frequently Asked Questions

What is the Bradford Factor and how is it calculated?: The Bradford Factor is a formula used in HR to measure the impact of employee absence on a business. It is calculated as: Bradford Factor = (Number of absence spells)² × (Total number of days absent). For example, 5 spells and 10 days gives a score of 250.
What does my Bradford Factor score mean?: The score helps identify patterns of absence. Generally, a score below 50 is considered low risk, 50-100 is moderate, 100-200 is high, and above 200 is very high. However, these thresholds vary by organization, and the calculator is for educational purposes only.
Why does the Bradford Factor emphasize frequent short absences?: Because the formula squares the number of spells, it gives more weight to frequent short absences than to occasional long ones. This reflects the disruption caused by many separate absences, which can be more damaging to productivity than a single long absence.

Tips & Common Mistakes

Tips

Ensure you count each separate absence period as one spell, even if it spans multiple days.
Use the calculator to compare scores over different time periods, such as quarterly or annually.
Combine the Bradford Factor with other metrics like total days lost for a fuller picture.
Remember that the Bradford Factor is a guide, not a definitive measure of employee performance.

Common Mistakes to Avoid

Counting each day as a separate spell instead of grouping consecutive days into one spell.
Using the calculator to make disciplinary decisions without considering the context or company policy.
Ignoring the educational limitation notice and treating the score as a formal HR assessment.

Last updated: August 13, 2026