RoyMech provides a growing collection of free online engineering calculators for mechanical, structural and manufacturing applications. The calculators have been developed using recognised engineering equations and are intended to provide quick solutions for design, checking and educational use.
All calculators support both metric and imperial units where appropriate and include the engineering equations used together with practical guidance.
The calculators are organised into subject areas to make it easy to locate the correct engineering tool.
Calculate reactions, shear forces, bending moments and beam deflections for a wide range of loading conditions including simply supported beams, cantilever beams, fixed beams and overhanging beams. Calculators are based on Euler-Bernoulli beam theory and include both metric and imperial outputs.
Engineering calculators for bolted joints including tightening torque, preload, proof load, tensile stress, shear stress and bolt strength calculations based on recognised engineering practice.
Browse Bolt & Fastener Calculators →
Calculate weld throat size, weld strength, allowable loads, fillet weld design and structural weld capacities for common engineering applications.
The RoyMech engineering calculator library is continually expanding and future categories will include:
Yes. All RoyMech online engineering calculators are free to use.
Most calculators support both metric and imperial units, allowing engineers worldwide to perform calculations using their preferred system.
The calculators are intended to assist engineering calculations and checking. Final responsibility for any engineering design remains with the design engineer.
Yes. The RoyMech engineering calculator library is continually expanding with new mechanical engineering calculators covering additional engineering disciplines.