Free tool · Reliability
Uptime SLA calculator
See what 99.9%, 99.95% or 99.99% uptime really allows in downtime per day, week, month and year, and what that could mean for your revenue in pesos.
Uptime SLA & downtime cost calculator
| Period | Allowed downtime | Revenue at stake (₱) |
|---|---|---|
| Per day | ||
| Per week | ||
| Per month (avg. 30.44 days) | ||
| Per year (365 days) |
Revenue at stake assumes your sales are spread evenly across the month, so an outage at peak hours can cost more. An SLA usually pays service credits, not your lost sales; read the provider’s SLA terms.
Worked example
A 99.9% SLA allows 0.1% downtime. An average month has about 730.5 hours, so 0.1% is roughly 43.8 minutes (43 minutes 50 seconds). Over a 365-day year that adds up to about 8 hours 46 minutes. At 99.99%, the monthly allowance drops to about 4 minutes 23 seconds.
What an SLA does and doesn’t cover
- Most SLAs pay service credits on your hosting bill, not compensation for lost sales.
- Planned maintenance windows are often excluded, so read how the provider counts downtime.
- Your own setup counts too: plugins, DNS and payment gateways can take a site down even when the server is up.