Taper Calculator — Modern, Responsive, Elementor-ready

🔻 Taper Calculator Live • AJAX style

Choose input mode Use 📏 Length (D_l, D_s, T_l) Use 📐 Angle (D_l, D_s, θ) Tip: Angle mode lets you solve for missing taper length from the angle.

🔩 Major diameter (D_l) larger end

🎯 Minor diameter (D_s) smaller end

📏 Taper length (T_l)

📐 Taper angle (θ) degrees

📉 Taper (T) unit-selectable

🧮 Detail: TPI & TPF

🧾 Step-by-step algebraic derivation

Enter values to see the algebra with your numbers.

Formulas shown match standard machining relations: TPI = (D_l − D_s)/T_l, TPF = 12 × TPI, θ = arctan(TPI/2), and for angle mode TPI = 2·tan(θ), T_l = (D_l − D_s)/TPI.

📚 Reference table (units)

Unit conversions used: 1 in = 25.4 mm = 2.54 cm; 12 in = 1 ft; 36 in = 1 yd; 1 m = 39.37007874 in.
T representation: in/in = TPI, in/ft = TPF = 12×TPI, ft/yd = 3×TPI.