Time Conversion Table

Values shown for 1 Second

About Time Conversions

Time conversions span twelve orders of magnitude in our converter, from nanoseconds (billionths of a second, relevant in computing where CPU cycles are measured in nanoseconds) to centuries. While most time relationships are exact and well-known (60 seconds = 1 minute, 3,600 seconds = 1 hour), month and year lengths require careful definition. Our converter uses the Julian year (exactly 365.25 days), which is the basis for the astronomical light-year, and the Julian month (30.4375 days, one-twelfth of a Julian year). These definitions avoid ambiguity inherent in calendar months, which vary from 28 to 31 days.

Unit Name	Symbol	Value	Formula
Century	c	3.16881 × 10⁻¹⁰	multiply by 3,155,760,000 (100 Julian years)
Day	d	0.0000115741	multiply by 86,400
Decade	dec	3.16881 × 10⁻⁹	multiply by 315,576,000 (10 Julian years)
Hour	h	0.000277778	multiply by 3600
Julian Month	mo	3.80257 × 10⁻⁷	multiply by 2,629,800 (365.25 days / 12)
Julian Year	yr	3.16881 × 10⁻⁸	multiply by 31,557,600 (365.25 × 86,400)
Microsecond	μs	1000000	divide by 1,000,000
Millisecond	ms	1000	divide by 1000
Minute	min	0.0166667	multiply by 60
Nanosecond	ns	1000000000	divide by 1,000,000,000
Second	s	1	base unit
Week	wk	0.00000165344	multiply by 604,800