When I was a lad I had a 1966 Chevy Impala with a 283 cubic inch engine. In the mid 1980's all the cars were saying their engine displacements in liters. I came up with a way to convert cubic inches into cubic liters and I thought I was SO SMART!
2.54 * 2.54 * 2.54 / 1000 * Cubic Inches = Cubic Liters
2.54 * 2.54 * 2.54 / 1000 * Cubic Inches = Cubic Liters
