Epoch & Unix Timestamp Converter
Two-way Unix timestamp converter with live system clock and client-side bulk log/CSV batch conversion.
Unix Timestamp → Human Date
Auto-Detect Sec/MsHuman Date → Unix Timestamp
Local TimezoneBulk Timestamp Batch Converter
Paste a column of timestamps or drop a CSV/Log file to convert hundreds of entries at once.
| Timestamp | UTC Time | Local Time |
|---|---|---|
| Paste timestamps on the left or upload a file to view batch conversions. | ||
Intelligent Precision Detection
Automatically resolves 10-digit Unix seconds and 13-digit JavaScript milliseconds without manual mode toggling.
Bulk Column Conversion
Drop raw database exports, server logs, or CSV dumps to parse thousands of records in local memory in milliseconds.
Zero Telemetry & Private
No log data or server timestamps ever leave your browser. All string parsing and mathematical formatting execute client-side.
Frequently Asked Questions
What is a Unix epoch timestamp?▼
A Unix epoch timestamp is the count of elapsed seconds (or milliseconds) since 00:00:00 UTC on January 1, 1970 (the Unix Epoch), excluding leap seconds. It is a universal standard for storing timestamps in databases and system logs.
How does the converter distinguish seconds from milliseconds?▼
Standard Unix timestamps in seconds are typically 10 digits (e.g., 1700000000). Millisecond timestamps are 13 digits (e.g., 1700000000000). SwiftKit automatically detects precision based on integer length and parses accordingly.
Can I paste an entire spreadsheet column or log file?▼
Yes. Switch to the 'Batch & Bulk Converter' tab to paste raw log outputs or spreadsheet columns, or upload a .csv/.txt file. All conversions execute 100% locally in browser memory without sending data to an external server.