square metre per second m2 s-1 square centimetre per second cm2 s-1 stokes St square millimetre per second mm2 s-1 centistokes cSt square inch per second in2 s-1 square inch per minute in2 min-1 square inch per hour in2 h-1 square foot per second ft2 s-1 square foot per minute ft2 min-1 square foot per hour ft2 h-1 poise cubic foot per pound P ft3 lb-1