CloudWatch Logs Insights Timestamp Converter
CloudWatch Logs Insights returns epoch milliseconds. Convert them to a date without doing the math yourself.
Epoch → Date
Date → Epoch
FAQ
Why does CloudWatch Logs Insights show timestamps as huge numbers?
CloudWatch Logs Insights returns the @timestamp field and any bin()-generated fields as Unix epoch milliseconds — the number of milliseconds since January 1, 1970 UTC. This tool converts those numbers to readable dates and back.
Does this tool send my data anywhere?
No. The conversion is simple date math that runs entirely in your browser.
Seconds or milliseconds — how do I know which one I have?
Unix timestamps in seconds are 10 digits today (e.g. 1751500000). Timestamps in milliseconds are 13 digits (e.g. 1751500000000). CloudWatch Logs Insights uses milliseconds.