Spindle RPM from cutting speed and tool diameter, and feed rate from chip load and number of flutes — for milling, drilling or turning. Enter your numbers; the cutting speed depends on tool and material, so use your tooling chart.
RPM = cutting speed ÷ (π × diameter). Feed rate = RPM × feed per tooth × number of teeth. For drilling/turning set teeth = 1 and use feed per rev in the chip-load box. Values are a starting point — trust your machine, tool and a test cut.