Automotive, Welding & Machine Shop Calculations
Precision math for hands-on careers
• Automotive: 1 liter ≈ 61 cubic inches. Torque × RPM ÷ 5252 = Horsepower
• Welding: Amps × Volts × 60 ÷ (Travel speed × 1000) = Heat input (kJ/in)
• Machining: RPM = (CS × 4) ÷ Diameter. Tolerance = ± acceptable variation
• All shops: Thousandths matter. 0.001" can mean pass or fail.