# SLA credit calculator

Work out the service credit owed for a month, from the fee, the downtime and your credit tiers.

## How it works

Uptime is the share of the month without downtime. The credit is the percentage of the fee set by the lowest tier the uptime fell under.

```
uptime = 100 − downtime ÷ 43,200 minutes × 100
```

## Questions

### Is a credit the only cost?

No. Credits are usually small next to lost revenue and trust, which is why internal targets are stricter than the SLA.

### Which month length is used?

30 days, which is how most SLAs measure.

## Related tools

- [Speed vs revenue calculator](https://powertraces.com/tools/speed-vs-revenue)
- [Observability ROI calculator](https://powertraces.com/tools/observability-roi)
- [Funnel drop-off calculator](https://powertraces.com/tools/funnel-drop-off)
- [A/B test significance calculator](https://powertraces.com/tools/ab-test-significance)

[All tools](https://powertraces.com/tools)