The Unix timestamp converter for macOS – right in your menu bar. Auto-detects seconds and milliseconds from your clipboard, converts and copies in one click. Runs fully offline – no internet needed, your data never leaves your Mac. No subscription, no annoying ads.
$2.99 · One-time · macOS 14+ · No subscription
UnixTime converts Unix timestamps without opening a window or filling in a field — it reacts straight to your clipboard.
UnixTime reads your clipboard, detects whether it's a timestamp or a date, converts it, and copies the result — all in one click. Nothing in clipboard? You get the current timestamp.
A clean panel shows all formats at once. Click any row to copy it. Reorder and hide formats via drag & drop — show only the ones you actually use.
Need a timestamp for a specific date or time offset? Enter year, month, day, hour, minute, second and timezone. Add or subtract time spans. Copy in one click.
Keyboard-free, no context-switching. Just your menu bar, right where you need it.
From raw epoch seconds to localized long-form dates — all without copy-pasting into a browser tab.
Hover over the menu bar icon to see what's in your clipboard and what UnixTime will do — before you even click.
Quickly access previous conversions and copy them again – no need to redo anything. The history shows the copied value, its calculated counterpart, the source app, and the timestamp at a glance.
Work across timezones with the date generator — pick any timezone for your timestamp output.
Follows macOS appearance automatically, or pin to light or dark mode.
Fully localized in 12 languages: English, Dutch, French, German, Hindi, Italian, Japanese, Portuguese, Russian, Simplified Chinese, Spanish, Turkish
Generate random timestamps for full days including time, for specific days with a fixed time, or just a random time within a single day.
Create as many custom date formats as you need. Weekdays and months are automatically displayed in the app's language. Add custom strings or include the calendar week.
A thoughtfully designed UI that focuses on what matters. Helpful tooltips and copy notifications keep you informed at every step.
Unix and epoch timestamps exactly the way you need them: seconds or milliseconds, custom format strings, custom order – and hide any formats you don't use.
Crafted with attention to detail – with the goal of becoming the best and most complete timestamp app for Mac. Missing a feature? Your feedback is always welcome.
UnixTime is a native macOS app. No Electron, no cloud, no account, no ads — and fully usable offline.
Zero network connections. Your clipboard data never leaves your machine.
No analytics, no telemetry, no crash reporters phoning home.
Built natively for macOS. Fast startup, minimal memory footprint, battery friendly.
Pay once, own it forever. No subscription, no in-app purchases, no upsells.
Short, honest answers. See the full FAQ for everything else.
The fastest way is a native menu bar app like UnixTime: copy the timestamp, click the menu bar icon, and the converted date is on your clipboard. No browser tab required.
macOS doesn't ship with a built-in Unix timestamp converter. You can use the Terminal (date -r 1720512000), a web tool like epochconverter.com, or a native app. Native apps are fastest because they don't require switching context to a browser or terminal. UnixTime lives in your menu bar, auto-detects timestamps in seconds or milliseconds from your clipboard, and copies the result back automatically — one click, done.
A Unix timestamp is a number representing the seconds elapsed since January 1, 1970 UTC (the "Unix epoch"). It's the standard way computers store and exchange points in time, used in APIs, logs, and databases.
Unix timestamps come in two common variants: seconds (10 digits, e.g. 1720512000) and milliseconds (13 digits, e.g. 1720512000000). JavaScript, MongoDB, and many modern APIs use milliseconds; PostgreSQL, Redis, and traditional Unix tools use seconds. Both refer to the same moment — just at different precision. UnixTime automatically detects which format is on your clipboard and converts it to a readable date.
For daily use, a native menu bar app is the best choice — it's always accessible, works offline, and doesn't require a browser tab. UnixTime is purpose-built for this workflow, with clipboard auto-detection, custom formats, and history.
The "best" tool depends on your use case: for one-off conversions, a web tool like epochconverter.com is fine; for command-line workflows, date -r works; for repeated daily use, a native menu bar app saves the most time. UnixTime combines automatic clipboard detection, configurable date formats (ISO 8601, RFC 2822, custom Unicode), a history of past conversions, and native macOS integration — all in a lightweight, offline app.
UnixTime is available in 12 languages: English, Dutch, French, German, Hindi, Italian, Japanese, Portuguese, Russian, Simplified Chinese, Spanish and Turkish. It follows your Mac's system language automatically.
Beyond the interface, the output formats are localized too: weekday and month names appear in the selected language. Set the language automatically (macOS system language) or manually in settings — changes take effect instantly, no restart.
Yes — UnixTime is a native macOS app that runs completely offline, with no network requests and no telemetry. Everything happens locally on your Mac.
Most Unix timestamp converters are web-based, which means every conversion sends data through a server. That's fine for public timestamps but problematic when you're working with sensitive log data or under strict network policies. UnixTime is sandboxed and has no network entitlement — it literally cannot make outbound connections. All conversions, history, and settings stay on your device.
Both count time from January 1, 1970 UTC, but at different precision: seconds have 10 digits (e.g. 1720512000), milliseconds have 13 digits (e.g. 1720512000000). They represent the same moment, just scaled by 1000.
JavaScript's Date.now(), MongoDB's ISODate, and most modern web APIs use milliseconds. PostgreSQL's to_timestamp(), Redis TTLs, the Unix date command, and traditional Linux tools use seconds. When you see a 10-digit number, it's seconds; 13 digits means milliseconds. UnixTime auto-detects both and converts correctly regardless.
One-time · No subscription · Yours forever
Requires macOS 14.6 or later · Apple Silicon & Intel