Date and time difference
Date and time difference lets you calculate elapsed milliseconds, seconds, and duration between instants in your browser.
Availability and downtime
Availability and downtime lets you calculate time-based allowed downtime from period and availability in your browser.
Availability and downtime
⌂ Inputs and results stay in this browser and are not automatically stored or sent.
Waiting for input
Input and conditions
Output
Waiting for input
Complete text result
How to use
Set availability and observation days to interpret a percentage as downtime, or use the reverse mode.
The allowed downtime changes with the period. This is time-based availability, not request success rate or an SLA determination. Keep the period and assumptions with the result.
Examples
99.9Principles and limits
Each input is limited to 1,048,576 bytes, output to 33,554,432 bytes, and processing to 5,000 ms. Input is never silently truncated.
Guides
Related tools
Percentage calculator
Percentage calculator lets you calculate percentages, change rates, and original values with zero checks in your browser.