# SLA Compliance Calculator

> Check measured availability against a commitment and its credit terms.

Page: https://freecalculator.tech/tools/sla-compliance-calculator
Last reviewed: 2026-09-16

## Formula

Achieved = (Measured time − Downtime) / Measured time; Credit = Credit rate × Fee, applied only when Achieved < Commitment

- Achieved = (Measured time − Downtime) / Measured time; Credit = Credit rate × Fee, applied only when Achieved < Commitment.
- Inputs used: Currency, Length of the service period, Unavailable time counted against the agreement, Time excluded by the agreement (optional), Availability committed in the agreement, Service credit due if missed (optional), Fee for the period (optional).
- Edge handling: Length of the service period is required.; Length of the service period cannot be negative.; Length of the service period must be no more than 1000000000000.; Unavailable time counted against the agreement is required.; Unavailable time counted against the agreement cannot be negative..

## Inputs

- Currency
- Length of the service period
- Unavailable time counted against the agreement
- Time excluded by the agreement (optional)
- Availability committed in the agreement
- Service credit due if missed (optional)
- Fee for the period (optional)

## Worked example: 65 minutes down in a 30-day month against a 99.9% commitment

The commitment, exclusions and any credit terms are the ones you entered.
1. Start with Currency: USD, Length of the service period: 720, Unavailable time counted against the agreement: 65, Time excluded by the agreement (optional): 0, Availability committed in the agreement: 99.9, Service credit due if missed (optional): 0.
2. Apply the method: Achieved = (Measured time − Downtime) / Measured time; Credit = Credit rate × Fee, applied only when Achieved < Commitment.
3. The commitment, exclusions and any credit terms are the ones you entered.

## Common questions

### Where does this formula come from?

Implementing SLOs — a service level objective is the share of good events among valid events (or of available time in the period); the error budget is the remainder that the objective permits. See the source link on this page.

### What kind of calculation is this?

Measured availability against a contractual commitment, with the credit the agreement states. Check the formula, example, and limitations on this page before using the result for a real professional & industry decision.

### What are its limits?

Arithmetic over the figures entered — it cannot tell whether the underlying monitoring, incident records or change records are complete. A mean over a short period, or over few events, is a weak description of behaviour. The result is only as current as the rates entered; a rate taken months ago is not a current cost. Many agreements use tiered credits or caps; only the single rate entered is applied. Not legal advice — the agreement's own wording governs.

### How do I use the SLA Compliance Calculator?

Enter the required values for Currency, Length of the service period, Unavailable time counted against the agreement, Time excluded by the agreement (optional), Availability committed in the agreement, and the other fields shown. The calculator applies the formula on this page and shows the main result with any supporting breakdown so you can check the arithmetic.

### What formula does the SLA Compliance Calculator use?

Achieved = (Measured time − Downtime) / Measured time; Credit = Credit rate × Fee, applied only when Achieved < Commitment The visible formula section above lists the calculation path and the edge cases the page handles, so the result can be checked without relying on the form alone. Check the formula, example, and limitations on this page before using the result for a real professional & industry decision.

### Can the SLA Compliance Calculator be used for exact decisions?

Use it as a calculation aid, not as a substitute for checking the underlying rule, contract, policy, or professional advice that applies to your situation. When a result depends on local rules, personal details, prices, or dates, enter those values yourself and confirm them before acting.

## Limitations and assumptions

- Inputs outside the supported range are rejected rather than forced into a result.
- The result depends on the values you enter for this sla compliance calculator; it does not supply missing rates, rules, prices, dates, or assumptions for you.

## Sources

- Google — https://sre.google/workbook/implementing-slos/

## Cite this page

- APA: Free Calculator. (2026, September 16). SLA Compliance Calculator. https://freecalculator.tech/tools/sla-compliance-calculator
- MLA: "SLA Compliance Calculator." Free Calculator, 16 Sept. 2026, https://freecalculator.tech/tools/sla-compliance-calculator.
- Link: SLA Compliance Calculator — Free Calculator, https://freecalculator.tech/tools/sla-compliance-calculator