CalcBrew

Converters

Time Converters

Military time, time zones and Unix timestamps. · 4 tools

Read and write time the way another system does: 24-hour military time and 12-hour AM/PM, meeting times across time zones, and Unix timestamps that logs and APIs use. The military-time pages cover every hour from 0000 to 2300 with a full chart.

Each converter explains the rule it applies, so you learn to do it in your head: military time drops the AM/PM and counts to 23, time zones add or subtract a fixed offset that changes with daylight saving, and Unix time counts seconds from 1970 in UTC.

How to choose

Military time
Open the page for the exact hour you were given (for example 1730) to see the 12-hour equivalent, how to say it aloud and a full 24-hour chart, or use the general converter for any time.
Time zones
Pair pages such as EST to IST show the current time in both zones, the offset in winter and summer and a 24-hour table, which is what you need to schedule a call across the world.
Timestamps
Paste a Unix timestamp from a log or an API and get a readable date in your own time zone; the converter also goes the other way for testing.

Frequently asked questions