Calcubench

Fast, offline unit conversions and engineering calculators, right in your pocket.

Calcubench is a fast, offline toolkit built for engineers, technicians, and students who need reliable conversions and calculations without hunting through reference books or spreadsheets.

UNIT CONVERTER Convert length, mass, force, pressure, energy, power, torque, area, volume, speed, angle, density, viscosity, and flow rate all offline, all instant.

FRACTION ↔ DECIMAL Convert fractional inch measurements to decimal and back, with adjustable precision down to 1/64".

POWER ↔ TORQUE Convert between power and torque at a given rotational speed.

MATERIAL & FLUID DATABASE Built-in mechanical properties for common engineering materials and fluids—density, elastic modulus, shear modulus, yield and tensile strength, and viscosity—plus the ability to add your own custom materials.

PRO TOOLS Unlock a full set of mechanical engineering calculators:

• Beam Deflection — rectangular, circular, tube, and I-beam profiles
• Torsion — angle of twist and shear stress for shafts
• Shear — maximum shear force and safety factor
• Fastener Calculator — torque, preload, and tensile stress area
• Pipe Flow Analysis — Reynolds number, pressure drop, and flow rate
• Weight Estimator
• Bolt & Torque Chart, Drill & Tap Size Chart, Structural Shapes reference

WORKS OFFLINE No internet connection needed — every calculation runs on your device.

Available in English and Spanish, with metric and imperial units throughout and adjustable decimal precision.