Mean Time to Remediate Calculator

Analyze incident fixes using timestamps and targets. Compare averages, medians, weighted results, and SLA attainment. See performance trends before bottlenecks damage reliability and delivery.

Calculator Inputs

This page uses a single main content column, while the form fields use a responsive 3-column, 2-column, and 1-column layout.

MTTR uses elapsed time from detection to remediation.

Severity Weights

Severity SLA Targets in Hours

Incident Log

Complete as many rows as needed. Blank rows are ignored.

Incident Row 1

Incident Row 2

Incident Row 3

Incident Row 4

Incident Row 5

Incident Row 6

Incident Row 7

Incident Row 8

Formula Used

Mean Time to Remediate (MTTR)

MTTR = Total remediation time for all incidents ÷ Number of resolved incidents

Severity Weighted MTTR

Weighted MTTR = Σ(Remediation time × Severity weight) ÷ Σ(Severity weights)

SLA Hit Rate

SLA Hit Rate = Incidents meeting target ÷ Total incidents × 100

Detection time is the moment an incident becomes known. Resolved time is the moment the fix or restoration is completed.

Elapsed hours are also converted to minutes or workdays for easier reporting. Workdays use your custom workday hours value.

How to Use This Calculator

  1. Enter the team name, reporting period, output unit, and workday hours.
  2. Set severity weights if you want critical incidents to influence averages more strongly.
  3. Enter SLA targets in hours for low, medium, high, and critical incidents.
  4. Fill in incident rows with an ID, severity, detected time, and resolved time.
  5. Optionally add owner and service names for a richer operational log.
  6. Click Calculate MTTR to show results above the form.
  7. Review the summary cards, detailed incident table, and Plotly trend chart.
  8. Use the export buttons to download CSV or PDF reports.

Example Data Table

Incident ID Severity Detected At Resolved At Remediation Hours SLA Status
INC-101 Critical 2026-03-01 02:15 2026-03-01 05:00 2.75 Met
INC-102 High 2026-03-02 09:20 2026-03-02 15:50 6.50 Met
INC-103 Medium 2026-03-04 11:00 2026-03-05 10:30 23.50 Met
INC-104 High 2026-03-07 18:40 2026-03-08 06:10 11.50 Breached
INC-105 Low 2026-03-09 08:00 2026-03-10 10:00 26.00 Met

These values are sample records to illustrate how the calculator works.

Frequently Asked Questions

1. What does mean time to remediate measure?

It measures the average time needed to fully resolve incidents after they are detected. Lower values usually indicate faster recovery and stronger engineering responsiveness.

2. How is MTTR different from mean time to detect?

MTTR focuses on fixing or restoring service after detection. Mean time to detect measures how quickly the team notices the incident in the first place.

3. Why include severity weights?

Severity weights let critical incidents influence the average more strongly than low-impact issues. This helps reporting reflect operational risk more realistically.

4. Should I use clock hours or workdays?

Use clock hours for operational incident reporting and always-on services. Use workdays when communicating performance to business teams that plan around standard working hours.

5. What counts as the resolved time?

Resolved time should be the moment service is restored or the issue is permanently fixed, based on your internal incident management rules.

6. Why calculate median and P90 too?

Average values can hide extreme incidents. Median shows the middle case, while P90 highlights the slower end of your remediation distribution.

7. How should SLA targets be set?

Targets should match service criticality, customer expectations, and operational commitments. Critical incidents usually need much shorter remediation goals than low-severity issues.

8. Can I use this for postmortem reporting?

Yes. The detailed table, summary metrics, and exported report make it useful for incident reviews, retrospectives, compliance checks, and management reporting.

This standalone file is intended to be saved as mean_time_to_remediate.php.

Related Calculators

Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.