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,
viscosity — plus the ability to add your own custom materials.

DEFLECTION (free)
Maximum beam deflection, bending stress, and safety factor. Pick a basic
profile (rectangular, circular, tube, I-beam) or a real rolled steel shape
from the built-in AISC/DIN/JIS catalog — with its actual published moment
of inertia, not an estimate. Optionally include the profile's own
self-weight as an additional distributed load.

PRO TOOLS
Unlock a full set of mechanical engineering calculators:
• Torsion — angle of twist and shear stress for shafts
• Shear — maximum shear force and safety factor, with the same real
steel-shape catalog and self-weight option as Deflection
• 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 — dimensions, weight, and moment of inertia
(Ix, Iy) for common AISC, DIN, and JIS steel shapes

WORKS OFFLINE
No internet connection needed — every calculation runs on your device. No
ads, no tracking, no account required.

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