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Free timestamp math calculator to add or subtract time from Unix timestamps. Supports seconds to nanoseconds, flexible time units, and instant ISO/RFC/MySQL outputs.
Add or subtract time from any timestamp
Match the selected precision
Learn more about this powerful tool
This tool provides essential functionality for your timestamp needs.
Designed to help you work with timestamps efficiently.
Save time and improve accuracy in your timestamp operations.
Discover what makes this tool powerful
Add or subtract time across seconds, milliseconds, microseconds, and nanoseconds without losing precision.
Adjust timestamps using seconds, minutes, hours, days, weeks, months, or years based on your workflow.
Start from the current time instantly and run timestamp math without manual lookup.
Instantly receive ISO 8601, RFC 3339, MySQL, and human-readable results alongside the adjusted timestamp.
Copy any result with a single click for quick use in code, logs, or databases.
Everything runs locally in your browser, so timestamp data never leaves your device.
Professional-grade timestamp processing with enterprise-level reliability
Simple steps to use this timestamp tool effectively
Paste your base timestamp and choose the precision (seconds, milliseconds, microseconds, or nanoseconds).
Select add or subtract, then choose the time unit and amount for the adjustment.
Get the adjusted timestamp plus ISO 8601, RFC 3339, MySQL, and human-readable outputs for quick use.
Common questions about timestamp tools and date conversion
Can't find the answer you're looking for? Contact our support team for assistance with timestamp conversion and date formatting questions.
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