1500000 km to light second conversion result above is displayed in three different forms: as a decimal (which could be rounded), in scientific notation (scientific form, standard index form or standard form in the United Kingdom) and as a fraction (exact result). Every display form has its own advantages and in different situations particular form is more convenient than another. For example usage of scientific notation when working with big numbers is recommended due to easier reading and comprehension. Usage of fractions is recommended when more precision is needed.
If we want to calculate how many Light Seconds are 1500000 Kilometers we have to multiply 1500000 by 500 and divide the product by 149896229. So for 1500000 we have: (1500000 × 500) ÷ 149896229 = 750000000 ÷ 149896229 = 5.0034614279723 Light Seconds
So finally 1500000 km = 5.0034614279723 light second
