Free Tools /Strategy
Business Hours & SLA Deadline Calculator
Enter a start time and an SLA duration, get the exact real deadline, correctly skipping weekends and hours outside your business calendar.
Deadline
How this tool works
Real business-hours math
Set your business hours and working days, then enter a start time and an SLA duration. The calculator counts only the hours that actually fall inside your working window.
Skips weekends and after-hours correctly
A Friday 4pm ticket with a 4-hour SLA does not resolve at 8pm Friday, it correctly rolls into the next working day at the point your business hours start again.
Shows the exact deadline, not an estimate
The result is a precise date and time you can put directly into a customer-facing SLA commitment or an automated escalation trigger.
Frequently asked questions
Why is this different from just adding hours to a timestamp?
Adding raw hours ignores your business calendar entirely: a "+4 hours" SLA started at 4pm Friday would naively land at 8pm Friday, outside working hours and misleading to a customer or an automation expecting a next-business-day escalation.
Can I use this for a workflow that escalates unresolved tickets automatically?
Yes, this is exactly the calculation an n8n workflow needs before scheduling a Wait node or a follow-up reminder for an SLA breach. Compute the deadline here first to sanity-check the logic before building it into a live workflow.
Does this account for public holidays?
Not currently, only weekly working days and daily business hours. For a holiday-aware calculation, subtract or add full working days manually for any holiday that falls within the calculated window.
What if the SLA duration is longer than the remaining hours today?
The calculator rolls the remaining duration into the next working day (or days), repeating the same time-window logic, correctly handling SLAs that span multiple working days.
Can I use fractional hours, like 1.5 hours?
Yes, the SLA duration field accepts decimals, so a 90-minute SLA can be entered as 1.5.
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