Convert light-years to miles

Explanation

From this page you can convert light-years to miles (or ly to mi) simply, by using the application above.

In case you are wondering, to convert from light-years to miles you need to multiply by 5.8786 × 10¹². This factor is calculated using the respective definitions of the two units you can find below.

Formula

1 ly≈5.8786 × 10¹² mi

light-yearsly

dimension	length
symbol	ly

The light-year (ly) is a unit of length.

It is used to measure astronomical distances like the one between stars or the size of galaxies in popular science publications. It is superseded by the parsec in scientific contexts.

Definition of the light-year

A light-year is the distance that light travels in vacuum in one julian year (i.e. 365.25 days of 86400 seconds each).

Value in terms of the SI

One light-year is equivalent to 9460730472580800 meters.

Equivalences

One light-year is also equivalent to:

Some Facts

After the Sun, Proxima Centauri is the nearest star. Nearest and yet extremely far away, 4.244 light-years (25 trillion miles) from Earth. We have to agree that in a first approximation, the universe is almost empty. And yet, here we are, converting things to light-years.

Other Light Lengths

light-nanosecond	lns	0.000 000 001
light-microsecond	lµs	0.000 001
light-millisecond	lms	0.001
light-second	ls	1
light-minute	lmin	60
light-hour	lh	3600
light-day	ld	86 400
light-year	ly	31 557 600
kilolight-year	kly	31 557 600 000
megalight-year	Mly	31 557 600 000 000
gigalight-year	Gly	31 557 600 000 000 000

Related Conversions

milesmi

dimension	length
symbol	mi

The mile (mi) is a unit of length in the international mass and length units.

Definition of the mile

One mile is defined as 1760 yards.

From the Weights and Measures Act of 1985: Measurement of length

Value in terms of the SI

One mile is equivalent to 1.609344 kilometers.

History

The mile was a ubiquitous unit throughout history with vastly different lengths in different countries. Today, the mile is used in the United States and in the United Kingdom for road signs.

The name of the unit derives from the latin mille passus meaning a thousand paces.

Some Facts

At 410 miles (660 kilometers), the A1 is the longest road in the UK.

International length units

inch	in
foot	ft	12 inches
yard	yd	3 feet
chain	ch	22 yards
furlong	fur	10 chains
mile	mi	8 furlongs
league	lea	3 miles

The International Mass and Length Units

The International Mass and Length Units are units based on the international yard and the international pound.

They were created in 1959 when Australia, Canada, New Zealand, South Africa, the United Kingdom and the United States of America agreed upon a common definition of the yard and the pound.