Response Time SLA Calculator
Calculate SLA compliance percentage and remaining latency budget from P50, P95, P99 response times against a target SLA.
How to Use the Response Time SLA Calculator
- Enter P50, P95, and P99 response times in ms.
- Enter your target SLA in ms.
- Click Calculate to see compliance and budget remaining.
Anwendungsfälle
- •Monitoring API performance against SLA commitments.
- •Identifying latency outliers in production systems.
- •Setting SLA targets for new API endpoints.
- •Reporting API reliability metrics to stakeholders.
Formel
SLA compliance = percentiles within target / total percentiles × 100%. Budget remaining = target SLA − P99.
Häufig gestellte Fragen
What are P50, P95, P99 percentiles?
P50 is median response time. P95 means 95% of requests are faster. P99 means only 1% of requests are slower.
Why use P99 instead of average?
Averages hide outliers. P99 reveals the worst experience for 1% of users, which matters for real user experience.
What is a good API response time?
Under 200ms for P50, under 500ms for P95, under 1000ms for P99 are common targets for web APIs.