Unix Timestamp Converter
Timestamp ↔ date both ways — plus live epoch clock
Right now
Current Unix epoch (seconds)
Timestamp → Date
Not a valid timestamp.
Date → Timestamp
Unix Timestamp Converter — Complete Guide & Instructions
MakeCard Unix Timestamp Converter translates epoch values into human-readable dates and back in both directions. Paste a timestamp to see local time, UTC, ISO 8601, and a friendly relative label like "3 days ago" — millisecond values are auto-detected. The page also shows a live epoch clock ticking each second, plus a date-time picker that outputs Unix seconds and milliseconds.
How to Use Unix Timestamp Converter
- 1 Read the live current Unix timestamp at the top and press "Copy" if you need it.
- 2 Under "Timestamp to Date", type an epoch value like 1735689600 — seconds or milliseconds both work.
- 3 View Local, UTC, ISO, and the relative label (e.g. "5 months ago").
- 4 Under "Date to Timestamp", pick a date and time to get the Unix seconds, milliseconds, and UTC string.
Key Features & Capabilities
- Bidirectional conversion — timestamp to date and date to timestamp.
- Live epoch clock updating every second with a Copy button.
- Local, UTC, ISO 8601, and relative-time outputs together.
- Auto-detection of millisecond vs second timestamps by length.
- Native datetime picker for the reverse direction.
- Relative labels from seconds to years, past and future.
Supported Formats & Specifications
| Parameter | Specification |
|---|---|
| Inputs | Unix seconds or milliseconds (auto-detected), or datetime-local pick |
| Outputs | Local string, UTC string, ISO 8601, relative time, epoch sec & ms |
| Live Clock | Current epoch updated every second |
| Locale | Indian English formatting for local time |
| Precision | Seconds and milliseconds both shown |
Practical Everyday Use Cases
- Decoding a timestamp found in logs or an API response.
- Generating an epoch value for a JWT expiry or API parameter.
- Checking how long ago a recorded event occurred.
- Verifying whether a value is in seconds or milliseconds.
- Grabbing the current epoch quickly for testing.
Pro Tips for Best Results
- Thirteen-digit values are milliseconds — the tool detects them automatically by length.
- Watch the relative label to sanity-check a timestamp from a log line.
- The datetime picker uses your local timezone; the UTC row shows the equivalent universal time.
- Copy the live epoch at the top for quick "now" values in curl commands and tests.
Common Problems & Solutions
The input must be numeric — remove spaces, colons, or date text; those go in the Date to Timestamp picker instead.
The input was interpreted as seconds near zero — a 13-digit millisecond value pasted as text still works; verify the digits.
The label compares against your device clock — check your system time if it seems wrong.
Privacy & Security
100% Client-Side Execution
Conversion uses your browser's clock and date functions — nothing is sent to a server.
Frequently Asked Questions
Everything you need to know about using Unix Timestamp Converter
Paste the number into the Timestamp to Date field — seconds or milliseconds both work — and read the local, UTC, ISO, and relative results instantly.
The top card shows the live epoch seconds ticking every second — press Copy to use it in scripts or API calls.
Seconds have ~10 digits; milliseconds have ~13. JavaScript uses milliseconds while most APIs and logs use seconds — the tool detects both by length.
Use the Date to Timestamp picker to choose the date and time; it outputs the Unix seconds, milliseconds, and UTC string.
Related FreeToolsBazaar Tools
Ready to Use Unix Timestamp Converter?
100% free, browser-based, and private. No installation, registration, or file upload to external servers required.
Start Using Unix Timestamp Converter