Want to know your 1/4 performance? Want to know your engine power based on 1/4 mile performance? Changing tire or wheel size? Want to know how will it affect the highway rpm's or the 1/4 mile performance? Easy to know with this calculator! The Calculator for Drag Racing! 1/8 to 1/4 mile E. T. Converter. Easily convert short track times to 1/4 mile times!