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Uptime & SLA downtime calculator

Enter an uptime percentage and see how much downtime it actually allows. Useful for reading any host's SLA — including ours.

Allowed downtime
per day
per week
per month
per year

What the numbers mean

A "99.9% uptime" SLA still allows about 43 minutes of downtime per month; "99.99%" allows about 4 minutes. The percentage alone tells you the promise — not what actually happened. That is why we publish our real, live uptime at up.overnight.host alongside our 99.9% SLA: you can check the proof instead of trusting a number.

FAQ

Straight answers.

What does 99.9% uptime allow?

Roughly 43 minutes of downtime per month (or about 8.8 hours per year). 99.99% allows about 4 minutes/month.

Is a higher SLA always better?

A higher SLA is a stronger promise, but only matters if the host honours it and is transparent. Look for a public status page, not just a number.

Does overnight.host offer an SLA?

Yes — a 99.9% uptime SLA, and we publish live uptime publicly at up.overnight.host so you can verify it.

How is downtime usually measured?

Over a billing period (month) against the SLA percentage; many hosts credit you if they miss it. Check the host's SLA terms.

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