how far is 40 light years

40 light years is approximately 378 trillion kilometers (3.78 x 10^14 km). A light year is the distance light travels in one year, and since light travels at about 299,792 kilometers per second, in one year it covers an immense distance totaling around 9.46 trillion kilometers. Multiplying this by 40 gives the total distance of 40 light years.