Pick a date and time, choose a timezone (IST / UTC / local), and get the equivalent Unix timestamp. Output as seconds (10 digits) for most APIs and databases, or milliseconds (13 digits) for JavaScript / Java / Node.js. Useful when filling 'created_at' fields in test data, querying time-based logs, or scheduling future events.
When to use this
Use to: prepare test fixtures with specific epoch values, schedule a cron job to run at a specific date, query log systems by epoch range, populate a 'starts_at' column in a calendar app database, generate seed data for time-series tests.
Frequently Asked Questions
Does the converted timestamp depend on timezone?
Yes, very much. '2026-05-16 12:00' is a different timestamp in IST (1747375200) vs UTC (1747402800) vs PST (1747422000). The tool defaults to your local timezone but lets you switch - always double-check before using the value in code.
Can I convert a date before 1970?
Yes, the result is negative. E.g. 1969-12-31 23:59:59 UTC = -1. Most modern systems accept negative epochs; some older or constrained systems (32-bit unsigned int storage) can't. If you need pre-1970 dates frequently, use ISO 8601 strings instead of Unix epoch.
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