To evaluate the performance of your IT service desk or external vendors, you need a mathematically sound way to measure success. This is where the SLA compliance formula comes in.
The Basic SLA Compliance Formula
At its core, calculating SLA compliance is about finding the ratio of successful interactions to total interactions. The standard formula is:
(Number of Incidents Meeting SLA / Total Number of Incidents) × 100 = SLA Compliance %For example, if your service desk handled 1,000 tickets this month, and 950 of them were resolved within the agreed SLA timeframe, your calculation is:
(950 / 1000) * 100 = 95% SLA Compliance
Uptime SLA Compliance Formula
When measuring system availability, the formula shifts from counting tickets to measuring time. The formula for uptime compliance is:
(Total Hours in Period - Downtime Hours) / Total Hours in Period × 100 = Uptime %Why Automated Calculation Matters
Doing these calculations manually in spreadsheets is prone to human error and difficult to scale. Utilizing dedicated SLA metrics calculators ensures accuracy and transparency between providers and clients.
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