Practical mechanical engineering data, formulas, and design tools used by engineers worldwide
RoyMech provides a comprehensive engineering reference data covering mechanical, electrical, mathematical, physical and chemical principles. The site includes practical data, formulas, tables, material properties and design guidance used by engineers in real-world applications.
Calculate weld strength, throat size, and load capacity for fillet and butt welds used in structural and mechanical design.
Tools for bolt torque, preload, stress, and joint analysis based on standard fastener properties and engineering formulas.
Reference values for static and kinetic friction between common engineering materials, used in design and calculation.
Metric and imperial thread dimensions including pitch, diameter, and tolerances for bolts, screws, and fasteners.
Standard flange sizes, bolt patterns, and pressure ratings for piping and mechanical systems.
Dimensions and properties of structural steel sections including beams, channels, and angles for engineering design.
RoyMech is a long-established engineering reference website originally created by Roy Beardmore. For over 20 years, it has provided reliable technical data and design guidance for engineers, designers, and students worldwide.
The site covers materials, manufacturing processes, machine design, and engineering calculations, offering practical and accessible reference information for real-world applications.
RoyMech is widely used as a trusted source of engineering reference data, supporting both professional design work and engineering education.
A German inventor, Nikolaus Otto is credited with the development of the four stroke engine. Also referred to as the Otto-cycle engine, his invention helped to initiate the development of motor cars. The same four steps of drawing in fuel and air, compressing the mixture then igniting it, and finally expelling through the exhaust is still the basis for our modern day combustion engines.
The greatest of all the classical engineers, Archimedes has influenced for all time the fields of maths, physics, engineering and astronomy. Though little is known about the precise details of his life, what he invented and discovered is not in doubt - the screw pump and compound pulleys can be attributed to him. The island of Syracuse, where he lived all his life, were also protected by various defense mechanisms of his design.
Brunel an English Engineer at the heart of many of the key building projects of the British industrial revolution. He built the Great Western Railway from Bristol to London and also developed powerful steamships. He also built the Clifton suspension bridge in Bristol and the first tunnel under the River Thames.
Engineers are professionals who design, analyse, and build machines, systems, and structures to meet practical needs while balancing safety, efficiency, and cost.
Engineering combines scientific principles with practical experience to solve real-world problems across industries including energy, manufacturing, transportation, and infrastructure.
Access formulas, tables, and calculators used in real engineering design.