Time Unit Converter Calculator

A calculator that helps convert time units: 1300 seconds is how many minutes?, minutes to seconds, hours to seconds, seconds to days, seconds to hours, and more.

How many days, hours, minutes, and seconds are in a year? (based on 365 days)

1 year	365Day
	8,760Time
	525,600Minute
	31,536,000Second

How many seconds are in a month?

28 days	2,419,200Second
29 days	2,505,600Second
30 days	2,592,000Second
31 days	2,678,400Second

Seconds per time unit

1 minute	60Second
1 hour	3,600Second
1 day	86,400Second
1 month (30 days)	2,592,000Second
1 year (365 days)	31,536,000Second

How many days, hours, minutes, and seconds is the Sun's orbital period?

The Sun's orbital period is about 365 days, 6 hours, 14 minutes, and 46 seconds. That is about 365.25 days, about 8,766 hours, or about 31,556,926 seconds.

The 24 solar terms do not divide the year into 24 equal time periods; they divide the Earth's position relative to the Sun into 24 parts (15° each). Each term therefore lasts a different amount of time, and the start of spring (Ipchun) each year is the point where the Sun's angle reaches 27.5° (315°).

Simple time unit conversion

Conversion result

About This Calculator

This time unit converter switches between seconds, minutes, hours, days, months and years. Individually these conversions are simple, but chains of them — like reading a log file of 3,600 seconds — are where a converter saves time.

Enter a value and pick its unit to convert it into every other time unit at once.

Time units are not a decimal chain: a day is 24 hours, an hour 60 minutes, a minute 60 seconds, a week 7 days and a year 365 or 366. Converting 100,000 seconds gives 27 hours 46 minutes 40 seconds — more than a day, which is why conversions have to cascade from the largest unit downward.

Key Formula:1 min = 60 s · 1 h = 60 min · 1 day = 24 h · 1 year ≈ 365.25 days

Frequently Asked Questions

How many seconds are in a day?

A day has 86,400 seconds: 24 × 60 × 60. A week has 604,800 seconds and a non-leap year 31,536,000 seconds.

Should a month be 30 or 31 days?

For conversions, a month is usually averaged at about 30.44 days (365.25 ÷ 12). Using exactly 30 days is fine for rough estimates but causes drift over long periods.

How many seconds are there in a month?

It depends on the month: 28 days is 2,419,200 seconds, 30 days is 2,592,000 and 31 days is 2,678,400. Averaged over a non-leap year it works out at about 2,629,746 seconds.

Why is a year not exactly 365 days?

A tropical year is about 365.2422 days. Leap years add a day every four years, and the century rule skips three of every four century leap years so the calendar stays aligned with the seasons.

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Sources & last update

2026-10-19