⏱️ Website Uptime SLA (99.9% vs 99%) & Downtime Loss Calculator

See exactly how many hours of downtime a "99% Uptime" free host allows vs a 99.9% paid host, and calculate your lost traffic & revenue.

1. Enter Hosting Uptime Percentage (%)

Daily Downtime
1m 26s
Weekly Downtime
10m 5s
Monthly Downtime (30d)
43m 12s
Yearly Downtime (365d)
8h 45m 36s

2. Annual Traffic & Revenue Lost to Hosting Outages

Even a 1% drop in uptime (from 99.9% to 98.9%) means over 3 full days of lost visitors and AdSense/affiliate clicks every year:

Lost Visitors / Year (Current SLA)
300 views
Lost Visitors on 98% Free Host
6,000 views
Annual Revenue Saved at 99.9% vs 98%
$102.60 / yr

3. Quick Reference: The "Nines" of Web Hosting Uptime

Uptime Tier Monthly Downtime Yearly Downtime Typical Hosting Type
98.0%14 hours 24 mins7 days 7.2 hoursFree cPanel Hosting (InfinityFree / Byet)
99.0% ("Two Nines")7 hours 12 mins3 days 15.6 hoursUltra-cheap / Overloaded Shared Hosting
99.9% ("Three Nines")43 mins 12 secs8 hours 45 minsStandard Reputable Shared & WordPress Hosts
99.99% ("Four Nines")4 mins 19 secs52 mins 34 secsMulti-Region Cloud / Cloudflare Pages
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