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Network SLO Compliance Calculator

Compare measured availability against an SLO and see the compliance margin plus how much downtime is left in the period.

About Network SLO Compliance Calculator

The allowance is fixed by the SLO and the period length, so compliance is a subtraction. Comparing the share of budget spent with the share of the period elapsed gives the burn ratio, which flags a breach before it happens rather than after. A month is compliant until it suddenly is not, and the burn ratio is what tells you to freeze risky changes while there is still budget to protect.

Formula

Network SLO Compliance

allowed downtime = period × (1 − SLO); achieved availability = (elapsed − downtime) ÷ elapsed.

SLO
Availability objective for the period
burn ratio
Budget consumed divided by the fraction of the period elapsed

Worked example

With the default values below, Network SLO Compliance Calculator returns Availability Achieved So Far of 99.9460%. Change any input above and every figure here is recalculated in your browser.

Inputs used

Availability SLOaccepts 50–100 %
99.95 %
Measurement periodaccepts 1–366 days
30 days
Downtime recorded so faraccepts 0–500,000 minutes
14 minutes
Days elapsed in the periodaccepts 0.1–366 days
18 days

Results

Availability Achieved So Far
99.9460%
Downtime Allowed in the Period
21.6 minutes
Downtime Remaining
7.6 minutes
Downtime Budget Consumed
64.8%
Compliance Status
At risk — burning budget 1.08 times faster than the period elapses

Step by step

  1. 1Values used
  2. 2Network SLO Compliance
  3. 3Availability Achieved So Far= 99.9460
  4. 4Downtime Allowed in the Period= 21.6 minutes
  5. 5Downtime Remaining= 7.6 minutes
  6. 6Downtime Budget Consumed= 64.8
  7. 7Compliance Status= At risk — burning budget 1.08 times faster than the period elapses

Assumptions and limits

  • The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax or fees or charges into account.
  • Figures are rounded for display to 4 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

How is Network SLO Compliance calculated?

allowed downtime = period × (1 − SLO); achieved availability = (elapsed − downtime) ÷ elapsed. The allowance is fixed by the SLO and the period length, so compliance is a subtraction. Comparing the share of budget spent with the share of the period elapsed gives the burn ratio, which flags a breach before it happens rather than after.

Why does Network SLO Compliance matter?

A month is compliant until it suddenly is not, and the burn ratio is what tells you to freeze risky changes while there is still budget to protect.

What values do I need to enter?

This calculator takes 4 inputs: Availability SLO, Measurement period, Downtime recorded so far, Days elapsed in the period. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.

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