Convert 1 s to yr

How to convert seconds to years

1. Formula: years = seconds × 3.168809e-8
2. Put in the value: 1 second.
3. Result: 3.168809e-8 years.

Seconds to years table

Converting the other way: years to seconds

seconds = years × 31,557,600. So 3.168809e-8 years is back to 1 second; one year is 31,557,600 seconds. See the years to seconds table.

Quick estimate in your head

For a rough answer, multiply by about 3e-8: 1 × 3e-8 ≈ 3e-8 yr, against the exact 3.168809e-8 yr (5.3% out). Good enough to check that a calculated result is sensible.

Common mistakes

The usual slip is using the factor the wrong way round. A second is smaller than a year, so the number of years must come out smaller than the number of seconds. If your answer goes the other way, divide instead of multiplying.

About the units

Second (s) and year (yr) are both units of time. One second equals 3.168809e-8 years, and one year equals 31,557,600 seconds. Results on this page are rounded for display; the conversion itself uses the exact definitions.

Time conversions come up in planning and scheduling, timesheets and pay, project estimates and working out ages or durations.

1 second in other units

The most readable unit for this amount is seconds (1).

• 0.01666667 min
• 0.00027778 h
• 0.00001157 d
• 0.00000165 wk
• 3.168809e-8 yr

How this answer was calculated

The result is worked out from the numbers in this page's address when the page is opened, using exact arithmetic wherever possible and rounding only for display. Nothing is copied from a printed table. If you think an answer is wrong, please tell us through the contact page and we will check it.

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