What Time Converter does
Enter a number of seconds and this tool shows how long that is in minutes, hours, days, weeks, months and years. It works in every direction between eight units, so the same form turns years into minutes or hours into milliseconds. A day is 86,400 seconds and a year is 31,536,000 seconds. Two conventions matter: a month is counted as exactly 30 days and a year as exactly 365 days, with no leap days. Results are decimal, so 26,000 seconds comes out as 7.222222 hours, not 7 hours 13 minutes 20 seconds; the examples below show how to split the decimal by hand.
How many seconds are in each unit of time
The factors the converter uses, with the multiplication behind each one.
| Unit | Seconds | Worked out as |
|---|---|---|
| Millisecond | 0.001 | 1 ÷ 1,000 |
| Minute | 60 | 60 |
| Hour | 3,600 | 60 × 60 |
| Day | 86,400 | 3,600 × 24 |
| Week | 604,800 | 3,600 × 24 × 7 |
| Month (30 days) | 2,592,000 | 3,600 × 24 × 30 |
| Year (365 days) | 31,536,000 | 60 × 60 × 24 × 365 |
Related products: 24 × 3,600 × 2 = 172,800 seconds in two days, 3 × 3,600 × 24 = 259,200 in three days, 2 × 60 × 60 × 24 × 365 = 63,072,000 in two years and 400 × 60 × 60 × 24 × 365 = 12,614,400,000 in 400 years.
How long is that many seconds?
Second counts converted to the units that make them readable.
| Seconds | Minutes | Hours | Days |
|---|---|---|---|
| 740 | 12.33 | 0.21 | 0.0086 |
| 1,000 | 16.67 | 0.28 | 0.0116 |
| 1,972 | 32.87 | 0.55 | 0.0228 |
| 3,600 | 60 | 1 | 0.0417 |
| 10,000 | 166.67 | 2.78 | 0.1157 |
| 26,000 | 433.33 | 7.22 | 0.3009 |
| 49,000 | 816.67 | 13.61 | 0.5671 |
| 86,400 | 1,440 | 24 | 1 |
| 100,000 | 1,666.67 | 27.78 | 1.1574 |
| 140,000 | 2,333.33 | 38.89 | 1.6204 |
| 1,000,000 | 16,666.67 | 277.78 | 11.5741 |
| 40,000,000 | 666,666.67 | 11,111.11 | 462.963 |
| 1,000,000,000 | 16,666,666.67 | 277,777.78 | 11,574.0741 |
One billion seconds is 31.709792 years in this converter, using 365-day years.
Years to days, minutes and seconds
Whole years of 365 days each. Leap days are not included.
| Years | Days | Minutes | Seconds |
|---|---|---|---|
| 1 | 365 | 525,600 | 31,536,000 |
| 2 | 730 | 1,051,200 | 63,072,000 |
| 3 | 1,095 | 1,576,800 | 94,608,000 |
| 5 | 1,825 | 2,628,000 | 157,680,000 |
| 10 | 3,650 | 5,256,000 | 315,360,000 |
| 20 | 7,300 | 10,512,000 | 630,720,000 |
| 29 | 10,585 | 15,242,400 | 914,544,000 |
| 50 | 18,250 | 26,280,000 | 1,576,800,000 |
| 100 | 36,500 | 52,560,000 | 3,153,600,000 |
| 400 | 146,000 | 210,240,000 | 12,614,400,000 |
| 5,730 | 2,091,450 | 3,011,688,000 | 180,701,280,000 |
1,460 days, which is four 365-day years, is 2,102,400 minutes.
365 or 365.25 days: which year the converter uses
The Year unit is exactly 365 days, or 31,536,000 seconds. That matches a common calendar year and the arithmetic most people do by hand, but it ignores leap years.
Science and astronomy often use the Julian year of exactly 365.25 days, which is 31,557,600 seconds, 525,960 minutes or 8,766 hours. The two differ by six hours a year, about 0.07 percent. Over the 5,730-year half-life of carbon-14 that adds up to roughly 1,432 days. If you need the 365.25-day figure, multiply your years by 365.25 and enter the answer with From set to Day; the table then gives the seconds, minutes and hours.
The Month unit is exactly 30 days, or 2,592,000 seconds. Twelve of these months make 360 days, not 365, so one Year shows as 12.166667 months. Real months run from 28 to 31 days. For the time between two actual calendar dates, use a date difference calculator instead of a fixed-factor conversion.
Worked conversions, with hours, minutes and seconds split out
The tool returns decimals. To split a decimal into parts, keep the whole number, then multiply the leftover fraction by 60 for the next unit down.
Seconds to minutes
Value 1972, From Second (s), To Minute (min)
32.866667 min (Rounded: 32.87 min)
32 whole minutes, and 0.866667 × 60 = 52 seconds. So 1,972 seconds is 32 minutes 52 seconds.
Seconds to hours
Value 26000, From Second (s), To Hour (h)
7.222222 h (Rounded: 7.22 h)
7 whole hours; 0.222222 × 60 = 13.33 minutes; 0.33 × 60 = 20 seconds. So 26,000 seconds is 7 hours 13 minutes 20 seconds.
Years to minutes
Value 3, From Year (365 days), To Minute (min)
1576800 min (Rounded: 1,576,800 min)
A log duration in milliseconds
Value 5400000, From Millisecond (ms), To Hour (h)
1.5 h
The table also shows 5,400 seconds and 90 minutes.
A cache lifetime of 30 days in seconds
Value 30, From Day, To Second (s)
2592000 s (Rounded: 2,592,000 s)
Formula for converting between time units
result = value × seconds in the From unit ÷ seconds in the To unit minutes = seconds ÷ 60 hours = seconds ÷ 3,600 days = seconds ÷ 86,400 years = seconds ÷ 31,536,000
Every input is first turned into seconds and then divided by the size of the target unit. Converting 2 years to days, for example, is 2 × 31,536,000 ÷ 86,400 = 730. The single factor for your chosen pair is displayed as Formula under Conversion details, such as 1 yr = 525600 min.
How to use it
- 1
Type the amount into Value, for example 140000.
- 2
Set From to the unit you have, such as Second (s).
- 3
Set To to the unit you want, such as Hour (h).
- 4
Read Result for up to six decimal places, or Rounded under Conversion details for two.
- 5
Look at the Same value in every unit table to see the duration in ms, s, min, h, days, weeks, months and years together.