*This calculator provides an approximation only and should only be used for reference.

Affinity Table

To use affinity template fill in RPM and Dia. blanks. Ratios are automatically calculated. Enter old GPM, TDH and BHP if required. New values will calculate when you move out of the cell. Use TAB or SHIFT TAB to move from cell to cell.


OLD RPM
NEW RPM
OLD DIA
NEW DIA
RPM RATIO
DIA RATIO
COMBINED RATIO

C is the ratio of diameter and/or speed. It will automaticly appear when the table is filled in.

GPM TDH BHP C GPM2 TDH2 BHP2