# uptime

> English word · Noun · frequency rank #38,221

## Definitions
1. The period of time a computer has functioned since last requiring a reboot.
2. The amount of time, or the proportion of total time, during which some system or machinery is operable.

## Etymology
From up (“(computing) functional, working”, adjective) + time.

## Easily confused with
- **upside** (https://plainspell.com/en/vs/upside-vs-uptime)
- **uptake** (https://plainspell.com/en/vs/uptake-vs-uptime)
- **uptick** (https://plainspell.com/en/vs/uptick-vs-uptime)
- **ultima** (https://plainspell.com/en/vs/ultima-vs-uptime)
- **ultimo** (https://plainspell.com/en/vs/ultimo-vs-uptime)

## Common misspellings (8)
`putime`, `upitme`, `upptime`, `uptiem`, `uptimme`, `uptmie`, `upttime`, `utpime`

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/uptime