Tools
Free SLA, uptime, error budget and DORA calculators.
Calculators for the numbers behind uptime targets, SLA credits, error budgets and incident reporting deadlines. No sign-up, nothing stored, and every result has a link you can share.
Uptime calculator
Open the full calculator%
- Day
- 1 min 26.4 s
- Week
- 10 min 4.8 s
- Year
- 8 h 45 min 36 s
Allowed downtime at 99.9% in a 30-day month
43 min 12 s
Exact
Integer arithmetic, rounded the safe way.
Downtime is computed to the millisecond and rounded down, attainment truncated, so a missed target never reads as met.
Private
Nothing stored.
Calculators run in your browser. The checker keeps only daily totals, never the address you enter.
Shareable
Every result has a link.
Copy a link to the exact inputs and anyone sees the same answer, with its working.