date
Date to Timestamp
Convert a date into a Unix timestamp
6 free tools
Date and time calculations are a constant source of developer headaches — timezone conversions, epoch timestamps, date arithmetic, and ISO 8601 formatting. Our free date tools cover Unix timestamp conversion, date difference calculation, age calculation, timezone conversion, ISO date formatting, and time duration math — all without leaving your browser.
date
Convert a date into a Unix timestamp
date
Calculate the number of days between two dates
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Calculate the precise duration between two dates and times
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Convert local time instantly across multiple global timezones
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Calculate exact age in years, months, and days
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Convert a date into ISO 8601 format
A Unix timestamp (also called epoch time) is the number of seconds elapsed since January 1, 1970 00:00:00 UTC. It is the standard time representation in most databases, APIs, and programming languages.
ISO 8601 is the international standard for representing dates and times, e.g., 2025-04-14T23:59:59Z. It is unambiguous, machine-readable, and used by nearly all modern APIs, databases, and programming languages.