Metrics · Ops · Product · Monthly · % · Updated 2026-07-21

What is Service Uptime?

Short answer: The percentage of time a product or service is fully operational and available to customers.

Definition

The percentage of time a product or service is fully operational and available to customers.

Formula

(Total time - Downtime) / Total time x 100

How to measure

Track outage duration from monitoring tools and calculate the percentage of total time the service was available and functioning correctly.

Why track it

Uptime is a trust metric that directly affects retention and renewal for B2B products, where downtime disrupts a customer's own operations.

Example

A company maintains 99.95% uptime this quarter, meeting the service level agreement promised to enterprise customers.

FAQ

What is Service Uptime?
The percentage of time a product or service is fully operational and available to customers.
How do you calculate Service Uptime?
(Total time - Downtime) / Total time x 100
Why track Service Uptime?
Uptime is a trust metric that directly affects retention and renewal for B2B products, where downtime disrupts a customer's own operations.
What is Service Uptime? Definition, formula, and growth use · Cofounderbase