Calcubench

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.