What this SLA calculator is for

Support teams often promise a first response or resolution inside a number of business hours. A ticket opened late Friday may have a very different due date from a ticket opened Tuesday morning, especially when public holidays or regional weekends apply.

This page calculates the planning due date by moving through working-hour windows and skipping non-working time. It is useful for help desks, customer support operations, B2B service teams, and internal escalation planning.

How the calculation works

  • Start from the ticket opened date and time.
  • Count only minutes inside the selected business-hours window.
  • Skip weekends, national public holidays for the selected country, and any custom holiday dates you add.
  • Show a copyable note with the calculated due date and the assumptions used.

Use it as a planning aid

Different tools and contracts can pause SLA timers for pending customer replies, customer tier changes, emergency support, or regional calendars. Confirm the official support policy before treating the result as binding.

Frequently asked questions

Does this calculate SLA time in business hours or calendar hours?

The calculator consumes only the selected working-hour window on business days. Weekends, national holidays, custom holiday dates, and off-hours are skipped.

How should I choose the time zone?

Enter the opened time in the SLA owner's local time zone. The result is shown as the same wall-clock time zone label, which is usually how support policies define business hours.

Can this decide an official support, legal, or contract SLA?

No. Use DayBridge as a planning calculator. Official deadlines should still be checked against the contract, support policy, customer tier, holiday calendar, and escalation rules that control the SLA.

Related tools

Business days between dates

Count working days in a date range before modelling a longer SLA window.

Open page
Add business days

Convert simple business-day promises into calendar target dates.

Open page
Public holidays

Check the country holiday calendar used by the SLA calculator.

Open page
Time zone meeting planner

Compare support coverage windows across remote teams and customer regions.

Open page