Unix Timestamp Batch Converter
Free batch Unix timestamp converter. Paste multiple epoch timestamps and convert them all to human-readable dates at once. Auto-detects seconds vs milliseconds, supports 18 timezones, and exports CSV.
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What is Unix Timestamp Batch Converter?
The Unix Timestamp Batch Converter is a free online tool that converts a list of Unix epoch timestamps into human-readable dates all at once. Paste timestamps from server logs, database exports, or API responses, choose a target timezone, and copy or download the results. It auto-detects seconds vs milliseconds, highlights invalid entries, and exports to CSV.
Key Benefits
- Convert hundreds of timestamps in a single paste
- Auto-detect seconds and milliseconds in mixed lists
- Render every timestamp in your chosen timezone
- Export to CSV with UTC ISO 8601 column
- Works offline in the browser, no uploads
Common Use Cases
- •Parsing timestamps from application and server logs
- •Converting database exports for reporting
- •Decoding API response timestamps for debugging
- •Preparing timestamped data for spreadsheets
How to Use the Unix Timestamp Batch Converter
- Paste your timestamps: Type or paste your Unix timestamps into the input box, one per line. Commas, semicolons, spaces, and tabs are also accepted as separators, so you can paste straight from a log or a database export.
- Pick seconds or auto-detect: Leave auto-detect on to let the tool figure out 10-digit seconds vs 13-digit milliseconds automatically. If all your values are in one unit, uncheck auto-detect and pick the unit explicitly.
- Choose a target timezone: Select the timezone you want the dates displayed in. The default is UTC; common options include Bangkok, Tokyo, London, and New York. Every row updates instantly.
- Copy or export the results: Click the copy icon next to any row to copy that timestamp and date, use Copy all for the whole list as tab-separated values, or download a CSV with timestamp, UTC ISO 8601, local datetime, and local date columns.
Key Features
- Bulk convert unlimited timestamps separated by newlines, commas, semicolons, or spaces.
- Auto-detection of 10-digit seconds and 13-digit milliseconds, with a manual override.
- 18 common timezones including Bangkok, Tokyo, London, New York, and Sydney.
- Per-row copy button plus copy-all and CSV download with a UTC ISO 8601 column.
- Invalid rows are highlighted red and removable in a single click.
- Runs entirely in the browser — no uploads, no API calls, works offline.