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Unix Time Converter

Convert a Unix timestamp (seconds or milliseconds) to a readable date and back, with the live current timestamp.

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Unix Timestamp ConverterConvert a Unix timestamp into a readable UTC date and time.Daily Time Savings CalculatorSee how a few minutes saved each day compound into hours, work days and weeks over a year.Email Reply Time CalculatorA tongue-in-cheek guide to the ideal window to reply to an email, from sender, urgency, timing and your strategy.Military Time ConverterConvert between 12-hour and 24-hour military time in both directions, with the full 0000-2300 chart, how to say each time out loud and the NATO zone letters.Reading time calculatorEstimate how long a text takes to read from its word count.Screen time calculatorSee how much your daily screen time adds up to over a week and a year.Speech time calculatorEstimate how long it takes to read a speech aloud from its word count.Time converterConvert between s, min, h, day, week and more. Free time converter, instant and accurate.

Unix Time Converter works straight from this page — free, instant, nothing to install. You will find it under Dates & time, with Unix Timestamp Converter and Daily Time Savings Calculator for the neighbouring cases.

How to use it

  1. Open the tool — no signup or install needed.
  2. Enter your input or adjust the available options.
  3. Get your result instantly, then copy or download it.

Frequently asked questions

What does Unix Time Converter do?

Convert a Unix timestamp (seconds or milliseconds) to a readable date and back, with the live current timestamp.

When would I actually use this?

Answering a scheduling question exactly: how many working days until a deadline, what date falls sixty days out, and what time that is for a colleague elsewhere.

What is the most common mistake?

Counting days by subtracting dates and forgetting whether the endpoints are included. Inclusive and exclusive counts differ by one, which is the difference between meeting a deadline and missing it.

How is Unix Time Converter different from Unix Timestamp Converter?

They sit next to each other but answer different questions: Unix Timestamp Converter is the one to open when you need it to convert a Unix timestamp into a readable UTC date and time. Pick whichever matches what you're starting from — both are free.

Is there a tool for the next step?

Daily Time Savings Calculator is the closest one after this: See how a few minutes saved each day compound into hours, work days and weeks over a year.

What else is worth having open alongside it?

Email Reply Time Calculator and Military Time Converter — they come up in the same task often enough to be worth a second tab.

Where do the figures come from?

Calendar arithmetic follows the proleptic Gregorian calendar and the IANA time-zone database, so daylight-saving transitions and leap years are handled. Public holidays vary by country and region and are not assumed.

Further reading

All guides →
ExplainerUnix Timestamps, Leap Seconds and the 2038 ProblemUnix time counts seconds since 1970 while deliberately ignoring leap seconds, which is why it is not a count of elapsed physical seconds. Here is what that trade buys, what a leap second does to the counter, the exact instant a signed 32-bit counter overflows, and the factor-of-1000 bug that lands you in 1970 or the year 58589.GuideThe Pomodoro Method: How Long to Work and How Long to RestTwenty-five and five come from Francesco Cirillo's method, not from a trial. What the research actually measured is task switching and the cost of getting back in — and the reason a fixed interval helps is not that 25 minutes is optimal. Plus what the planner really returns, including the long break it quietly leaves out.ExplainerWhat Is a Unix Timestamp?A Unix timestamp counts the seconds since January 1, 1970 UTC. Learn why computers use it, how to convert it, and the 2038 problem.ExplainerReading and Writing Military Time0800 is not “eight o'clock” and not “08:00” — it is “zero eight hundred”, with a zone letter on the end. The four digits, the spoken form, midnight at 0000, the argument about 2400, and the reason 12-hour notation cannot settle noon.ExplainerHow Daylight Saving Time Works: Spring Forward, Fall BackDaylight saving time shifts clocks an hour in spring and back in autumn. Learn spring-forward and fall-back, why one day is 23 hours and another 25, and how US and EU dates differ.How-toHow to Convert Time Zones: UTC Offsets, Day Rollover and DSTConverting between time zones is adding or subtracting the difference in UTC offsets, then handling any day rollover. Learn the method, a worked example, and the DST caveat.
Unix Time Converter — OneKitly