How many light-day in 1 petametre? The answer is 38.606955462749. We assume you are converting between light day and petametre. You can view more details on each measurement unit: light-day or petametre The SI base unit for length is the metre. 1 metre is equal to 3.8606955462749E-14 light-day, or 1.0E-15 petametre. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between light days and petameters. Type in your own numbers in the form to convert the units!
1 light-day to petametre = 0.0259 petametre
10 light-day to petametre = 0.25902 petametre
20 light-day to petametre = 0.51804 petametre
30 light-day to petametre = 0.77706 petametre
40 light-day to petametre = 1.03608 petametre
50 light-day to petametre = 1.2951 petametre
100 light-day to petametre = 2.59021 petametre
200 light-day to petametre = 5.18041 petametre
You can do the reverse unit conversion from petametre to light-day, or enter any two units below:
A light day (also written light-day) is a unit of length. It is defined as the distance light travels in an absolute vacuum in one day (of 86,400 seconds) or 25,902,068,371,200 metres (~26 Tm).
Note that this value is exact, since the metre is actually defined in terms of the speed of light. The light day isn't very frequently used at all since there are few astronomical objects or distances of that magnitude; the Oort cloud, for example, is thought to extend between 290 and 580 light-days out from the Sun.
A petametre (American spelling: petameter, symbol: Pm) is a unit of length equal to 10^15 metres.
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