Converter Tools
Timestamp Converter — Unix Time, Dates, Timezones & Batch
Convert Unix timestamps to dates free with live clock, batch lines, 13 timezones & ISO/GMT/local output. Not a cron builder — convert timestamps now.
Timestamp Converter on FYN Tools is a free Converter Tools utility. Open Timestamp Converter in your browser — no signup required. Watch a live Unix timestamp update every second, convert seconds or milliseconds to ISO/GMT/local dates, parse date strings back to timestamps, shift datetimes across 13 timezones, or batch-convert many lines — not a cron expression builder. Related: Date Difference Calculator.
Privacy & processing: Live clock and conversions run in your browser using JavaScript Date and Intl APIs. No cron schedule builder is included.
TL;DR: Watch a live Unix timestamp update every second, convert seconds or milliseconds to ISO/GMT/local dates, parse date strings back to timestamps, shift datetimes across 13 timezones, or batch-convert many lines — not a cron expression builder.
Reviewed by FYN Tools Editorial · Guides ·
Data input / output
| Inputs | Unix timestamp (seconds or ms), date string, timezone datetime, or batch lines of timestamps/dates |
|---|---|
| Outputs | ISO, GMT, and local formatted strings; seconds/ms values; timezone conversions; batch mapped lines |
| Formats | Unix seconds (live badge), ISO 8601, GMT string, locale string |
| Limits | 13 timezone presets; batch processes newline-separated lines; auto-detects ms when input length > 10 digits |
| Processing | Client-side (browser Date and Intl) |
How to Use the Timestamp Converter
- Copy the live Unix timestamp from the badge at the top (updates every 1s).
- Paste a timestamp in Timestamp → Date to see ISO, GMT, and local strings.
- Enter a date string in Date → Timestamp for seconds and milliseconds.
- Set source and target timezones, enter YYYY-MM-DD HH:MM, and read both zone labels.
- Paste multiple timestamps or dates into Batch Convert and pick ISO, GMT, or local output.
- Use Copy buttons beside each formatted result as needed.
What is a Timestamp Converter?
A live Unix timestamp badge updates every second so you can copy the current epoch seconds. Paste a timestamp to see ISO, GMT, and local interpretations — inputs with more than 10 digits are treated as milliseconds. A separate panel converts human-readable date strings back to seconds and milliseconds.
Timezone conversion accepts a YYYY-MM-DD HH:MM value in a source zone and shows the equivalent in a target zone from 13 presets including UTC, IST, PST, EST, JST, and AEST. Batch mode maps each non-empty line to a converted value in ISO, GMT, or local format. This is not a cron expression generator.
Timestamp parsing uses Number() with an ms heuristic based on digit count. Timezone math uses Intl.DateTimeFormat formatToParts to compute offsets. Batch output joins lines as input -> formatted result, marking invalid lines explicitly.
How it works
You set convert timestamp to date in the live panel. Timestamp Converter then convert Unix timestamps to dates and dates to timestamps with timezone support. Results show as result from timestamp converter you can copy or download.
Calculate date differences with our Date Difference Calculator.
Usage scenarios
- Log timestamp decode: Paste 1700000000 and read ISO/GMT/local instantly for a server log entry.
- Cross-timezone meeting: Enter 2026-08-05 14:00 in America/New_York and see Asia/Kolkata equivalent.
- Batch epoch cleanup: Paste dozens of epoch lines and export ISO-formatted results in one pass.
Input / Output Examples
Input
1704067200
Output
2024-01-01 00:00:00 UTC
Frequently Asked Questions
What is a Unix timestamp?+
A Unix timestamp is the number of seconds since January 1, 1970 (UTC). It's commonly used in databases and APIs.
Does this tool support milliseconds?+
Yes. If you enter a longer timestamp, the tool treats it as milliseconds and converts correctly.
Can I convert between timezones?+
Yes. Enter a date/time and choose a source and target timezone to convert accurately.
Can I batch convert multiple timestamps?+
Yes. Paste one timestamp or date per line in the batch area to convert them all at once.
Key Features
- Live Unix timestamp (1s refresh)
- Timestamp ↔ date panels
- 13 timezone dropdown presets
- Batch convert with ISO/GMT/local output
- Per-field copy buttons
Benefits
Decode epoch values without a terminal date command.
Compare times across regions using named zones.
Process many timestamps in one paste.
When to Use Timestamp Converter
- Checking what a Unix log timestamp means in local time
- Converting API epoch values during backend debugging
- Translating a meeting time between IST and EST
- Bulk-converting a list of epoch values from a CSV export
Advantages
- Live Unix clock updating every second
- Seconds and milliseconds auto-detection
- 13 timezone presets with source/target selectors
- Batch multi-line conversion
Tips
- Use 13-digit (or longer) values when your source stores milliseconds.
- Pick the correct source timezone before interpreting a wall-clock datetime.
- Batch mode skips empty lines and labels invalid input per line.
- Copy the live badge when you need the current epoch in scripts.
Common Mistakes
Expecting a cron builder — this tool converts timestamps and dates only.
Feeding seconds where milliseconds are required (or vice versa) without checking digit count.
Assuming every possible IANA zone is listed — only 13 presets are available.
Pasting non-parseable date strings and expecting a timestamp instead of no result.
Summary
Copy the live epoch, convert timestamps and dates, shift across 13 timezones, or batch-process lines — not a cron builder.