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Free uptime tools

Calculators and checks for everyday uptime work. Free, no signup required.

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SLA & Uptime Calculator

Turn 99.9% into real minutes of downtime per day, month and year, or convert an outage into the uptime it cost you.
Is Website Down?

Check from the outside whether a website is down for everyone or just for you, and see live status for popular services.

Monitor your uptime for free

2-minute setup · Cancel any time
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