tools ▸ uptime calculator

What does 99.9%really mean?

Turn any SLA percentage into real minutes of allowed downtime — or enter the downtime you had and see the uptime you actually delivered.

Uptime / SLA %

or: downtime this month (minutes)

result—

runs 100% in your browser — nothing is uploaded or stored

uptime calculator ▸ explained

What you need
to know.

Convert an uptime percentage into allowed downtime per day, week, month and year.

99.9%

About 43 minutes of downtime a month — our standard hosting SLA.

99.99%

About 4.3 minutes a month — needs redundant servers, not just a good host.

credits

Check how downtime is measured and what credit you get when the SLA is missed.

related ▸ more free tools

faq ▸ before you buy

How much downtime is 99.9% uptime?+

About 8 hours 46 minutes per year, 43 minutes 50 seconds per month, or 1 minute 26 seconds per day.

What is the difference between 99.9% and 99.99%?+

99.99% allows ten times less downtime — about 52 minutes a year instead of almost 9 hours.

What uptime does The PowerHost guarantee?+

Our hosting carries a 99.9% uptime SLA, monitored around the clock from our Noida datacenter.

~$ provision --region in ✓ done in 47s