The light-second is a unit of length useful in astronomy, telecommunications and relativistic physics. It is defined as the distance that light travels in free space in one second, and is equal to exactly 2997 ..more definition+
An em is a unit in the field of typography, equal to the currently specified point size. For example, one em in a 16-point typeface is 16 points. Therefore, this unit is the same for all typefaces at a given point size. ..more definition+
In relation to the base unit of [length] => (meters), 1 Light Seconds (ls) is equal to 299800000 meters, while 1 Ems (EM) = 0.0042175176 meters.| 1 Light Seconds | to common length units |
|---|---|
| 1 ls | = 299800000 meters (m) |
| 1 ls | = 299800 kilometers (km) |
| 1 ls | = 29980000000 centimeters (cm) |
| 1 ls | = 983595800.52493 feet (ft) |
| 1 ls | = 11803149606.299 inches (in) |
| 1 ls | = 327865266.84164 yards (yd) |
| 1 ls | = 186287.08343275 miles (mi) |
| 1 ls | = 3.1687982242892E-8 light years (ly) |
| 1 ls | = 1133102504957.8 pixels (PX) |
| 1 ls | = 1.87375E+43 planck length (pl) |
| Light Seconds | to Ems (table conversion) |
|---|---|
| 1 ls | = 71084469214.782 EM |
| 2 ls | = 142168938429.56 EM |
| 3 ls | = 213253407644.35 EM |
| 4 ls | = 284337876859.13 EM |
| 5 ls | = 355422346073.91 EM |
| 6 ls | = 426506815288.69 EM |
| 7 ls | = 497591284503.47 EM |
| 8 ls | = 568675753718.25 EM |
| 9 ls | = 639760222933.04 EM |
| 10 ls | = 710844692147.82 EM |
| 20 ls | = 1421689384295.6 EM |
| 30 ls | = 2132534076443.5 EM |
| 40 ls | = 2843378768591.3 EM |
| 50 ls | = 3554223460739.1 EM |
| 60 ls | = 4265068152886.9 EM |
| 70 ls | = 4975912845034.7 EM |
| 80 ls | = 5686757537182.5 EM |
| 90 ls | = 6397602229330.4 EM |
| 100 ls | = 7108446921478.2 EM |
| 200 ls | = 14216893842956 EM |
| 300 ls | = 21325340764435 EM |
| 400 ls | = 28433787685913 EM |
| 500 ls | = 35542234607391 EM |
| 600 ls | = 42650681528869 EM |
| 700 ls | = 49759128450347 EM |
| 800 ls | = 56867575371825 EM |
| 900 ls | = 63976022293304 EM |
| 1000 ls | = 71084469214782 EM |
| 2000 ls | = 1.4216893842956E+14 EM |
| 4000 ls | = 2.8433787685913E+14 EM |
| 5000 ls | = 3.5542234607391E+14 EM |
| 7500 ls | = 5.3313351911086E+14 EM |
| 10000 ls | = 7.1084469214782E+14 EM |
| 25000 ls | = 1.7771117303695E+15 EM |
| 50000 ls | = 3.5542234607391E+15 EM |
| 100000 ls | = 7.1084469214782E+15 EM |
| 1000000 ls | = 7.1084469214782E+16 EM |
| 1000000000 ls | = 7.1084469214782E+19 EM |