Keepa Time Converter

Convert Keepa's minute-based timestamps into readable dates, and back again. Keepa stores time as the number of minutes since 1 January 2011 (UTC), which is why a raw CSV export shows large integers instead of dates. Everything below runs in your browser.

Keepa time → date

Paste a Keepa time value (the large minute number from a CSV export).

Keepa time (minutes)

UTCSat, 5 Apr 2025, 10:03

ISO 8601 (UTC)2025-04-05T10:03:00.000Z

Your local time4/5/2025, 10:03:00 AM

Date → Keepa time

Pick a date and time to get the Keepa minute value.

Date & time (your local time zone)

Keepa time (minutes)8,097,177

UTCMon, 25 May 2026, 00:57

How Keepa time works

Keepa records every data point (price, sales rank, Buy Box changes) against a timestamp measured in minutes since 1 January 2011 at 00:00 UTC. Most software counts time from 1 January 1970 (the Unix epoch), and exactly 21,564,000 minutes separate the two dates.

So to turn a Keepa minute value into a normal date you add 21,564,000 and convert minutes to milliseconds (× 60,000); to go the other way you subtract it. The converter above does both, and shows the result in UTC and your local time zone so you can line Keepa data up with your own records.

Frequently asked questions

How do I convert Keepa time to a normal date?: Keepa stores time as the number of minutes since 1 January 2011 (UTC). To convert it to a standard date, add 21,564,000 and multiply by 60,000 to get milliseconds since 1 January 1970, then read it as a date, or simply paste the Keepa value into the converter above.
Why does my Keepa CSV export show large numbers instead of dates?: Those large integers are Keepa time in minutes counted from the start of 2011. Spreadsheets don't recognise them as dates, so they appear as raw numbers until you convert them.
What is the Keepa epoch?: It is 1 January 2011 at 00:00 UTC, the zero point Keepa counts minutes from. Exactly 21,564,000 minutes separate it from the Unix epoch (1 January 1970) used by most software.
Can I convert a normal date back into Keepa time?: Yes. Use the second panel above: pick a date and time and it returns the Keepa minute value, which is the whole number of minutes between that moment and 1 January 2011 UTC.

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How Keepa time works

Frequently asked questions

How do I convert Keepa time to a normal date?

Keepa stores time as the number of minutes since 1 January 2011 (UTC). To convert it to a standard date, add 21,564,000 and multiply by 60,000 to get milliseconds since 1 January 1970, then read it as a date, or simply paste the Keepa value into the converter above.

Why does my Keepa CSV export show large numbers instead of dates?

Those large integers are Keepa time in minutes counted from the start of 2011. Spreadsheets don't recognise them as dates, so they appear as raw numbers until you convert them.

What is the Keepa epoch?

It is 1 January 2011 at 00:00 UTC, the zero point Keepa counts minutes from. Exactly 21,564,000 minutes separate it from the Unix epoch (1 January 1970) used by most software.

Can I convert a normal date back into Keepa time?

Yes. Use the second panel above: pick a date and time and it returns the Keepa minute value, which is the whole number of minutes between that moment and 1 January 2011 UTC.