Unix Timestamp Batch Converter

Convert multiple Unix timestamps to human-readable dates, or multiple dates to Unix timestamps, all at once. Enter one value per line.

How It Works

This tool processes multiple values at once, converting each line of input independently. All processing happens entirely in your browser — no data is sent to any server.

• Timestamps → Dates — enter Unix timestamps (seconds since Jan 1, 1970 UTC) and get formatted dates. Supports seconds, milliseconds (13 digits), and microseconds (16 digits).
• Dates → Timestamps — enter date strings in most common formats (ISO 8601, RFC 2822, or natural date strings like 2024-01-15 09:30:00) and get Unix timestamps.
• Output Formats — choose between ISO 8601, RFC 2822, RFC 3339, locale-formatted, or UTC strings.
• Error Handling — invalid lines are flagged individually without stopping the rest of the batch.

Supported Input Formats

When converting dates to timestamps, the following formats are recognized:

• 2024-01-15T09:30:00Z — ISO 8601
• 2024-01-15 09:30:00 — Date and time
• Mon, 15 Jan 2024 09:30:00 GMT — RFC 2822
• Jan 15, 2024 — Natural date string
• 2024/01/15 — Slash-separated date

Common Unix Timestamps