Convert between Unix timestamps, ISO dates and human-readable time.
Every tool below runs entirely in your browser. Nothing you type or upload is sent to a server, there is no account to create, and no page reloads.
All time & dates tools
| Tool | What it does |
|---|---|
| Date Difference Calculator | Find the exact time between two dates in days, weeks, months and years. Also shows weekdays and total hours. |
| Epoch Converter | Convert between Unix timestamps, ISO 8601, RFC 2822, SQL datetimes, Excel serials and more. Covers every timestamp format you will meet. |
The tools in detail
Date Difference Calculator
Find the exact time between two dates in days, weeks, months and years. Also shows weekdays and total hours.
Open Date Difference Calculator →
Epoch Converter
Convert between Unix timestamps, ISO 8601, RFC 2822, SQL datetimes, Excel serials and more. Covers every timestamp format you will meet.
Why these run in your browser
Every tool on this site is client-side. That is a deliberate choice, and it has three practical consequences.
Your data stays on your machine. There is no upload step, no server processing and nothing stored. You can confirm this yourself: open your browser's developer tools, switch to the Network tab and use any tool. Nothing is sent.
Results are instant. There is no round trip to wait for, so the output appears as fast as the browser can compute it.
It is free. There is no server cost per request to pass on, which is why there is no paywall and no usage cap.