How long is a month in this converter?

A month here is the average length across a year, about 30.44 days, because months vary from 28 to 31 days. That makes month and year conversions consistent rather than tied to one particular calendar month. For a specific month, use its actual number of days.

How many seconds are in a day?

There are 86,400 seconds in a day: 24 hours times 60 minutes times 60 seconds. From there, a week is 604,800 seconds, which is why these conversions are exact whole numbers up to the day and week.

Does this work offline and is anything sent to a server?

The conversion runs entirely in your browser, so nothing you type is sent anywhere, and once the page has loaded it keeps working with no connection. There is no sign-up and no limit on how many conversions you make.

Time Converter

Convert time between milliseconds, seconds, minutes, hours, days, weeks, months and years. Type a value and see it in every unit at once. A free, instant time converter that runs in your browser, with no sign-up.

Exact, standard factors
100% free
No sign-up, no app
Instant as you type
Works offline after first load

Convert

From

60min

1 h = 60 min

1 h in every unit

Millisecond3,600,000 ms

Second3,600 s

Minute60 min

Hour1 h

Day0.04166667 d

Week0.00595238 wk

Month (avg)0.00136893 mo

Year (365.25 d)0.00011408 yr

How to use it

1
Enter a value

Type the number you want to convert. The result updates as you type, with no button to press.
2
Pick the units

Choose what you are converting from and to. Swap them with one click if you need the reverse.
3
Read or copy

See the exact result, plus a table of your value in every unit. Copy any line you need.

When it comes in handy

Planning and scheduling

Work out how many hours are in a number of days, or how many weeks make up a period in days.

Coding and timeouts

Convert seconds to milliseconds for a timer or timeout, or the other way for a log.

Everyday maths

Answer a quick question like how many minutes are in a day or seconds in an hour.

Instant, exact & 100% in your browser

The conversion runs right here in your browser using exact, standard factors. Nothing you type is sent to a server, there is no sign-up and no limit, and once the page has loaded it keeps working even with no connection.

Frequently asked questions

How long is a month in this converter?: A month here is the average length across a year, about 30.44 days, because months vary from 28 to 31 days. That makes month and year conversions consistent rather than tied to one particular calendar month. For a specific month, use its actual number of days.
How many seconds are in a day?: There are 86,400 seconds in a day: 24 hours times 60 minutes times 60 seconds. From there, a week is 604,800 seconds, which is why these conversions are exact whole numbers up to the day and week.
Does this work offline and is anything sent to a server?: The conversion runs entirely in your browser, so nothing you type is sent anywhere, and once the page has loaded it keeps working with no connection. There is no sign-up and no limit on how many conversions you make.