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The machining tolerances calculator determines the machining tolerances (maximum and minimum diameters) for mating holes and shafts according to ISO and ANSI fit criteria.

The metal fatigue calculator is used to determine the fatigue life of any mechanical component according to three recognised theories: Linear, Non-Linear and Goodman Modified Diagram.

The metal properties database is a collection of the principal physical properties for over 120 standard metals and alloys including strength, elastic, thermal, electrical and chemical.

Mode 14 determines the natural frequency of a submerged pipe according to DnV's guidelines No. 14 for free spanning pipelines, including the effects of axial tension/compression

Mode Shapes determines deflection and natural frequency of each mode of a beam vibrating between pinned and/or fixed supports (up to 1000 modes)

Area Moments+ calculates the strucural properties of complex shapes comprising up to to 18 sub-shapes, the input data for which can be entered manually or imported from Area Mom...

Newton calculates the orbital properties of a satellite; such as a star, planet, moon, etc. orbiting a force-centre; such as a black-hole, star, planet, etc. along with its dynamic proper...

Ocean Waves calculates the parameters of an hydrodynamic wave according to Linear, Hyperbolic, Cnoidal, Solitary, Stokes II, III & V theories

Ocean Waves plus calculates the hydrodynamic forces induced on a structural member due to added mass and drag

Our lens calculator determines the performance of spherical optical lenses made from any material and in any enviroment(s)

A ꞌ.pdfꞌ version of a book explaining how all universal orbits (celestial and atomic) work.

The padeye calculator sizes a padeye to fit a recognised shackle design

Partial Pressures calculates the pressure, mass and number of moles of each individual gas in a mixture of fluids

A ꞌ.pdfꞌ version of a book explaining Isaac Newtonꞌs laws of orbital motion in a form that anybody can understand.

Physics calculates the properties and behaviour of all the matter in the universe, from Quanta to the 'Big-Bang', using a single unified set of formulae and theories.

Our piling calculator determines the installation criteria, operational parameters and limitations of tubular metal piles hammered into soil

Pipe Flow+ calculates fluid flow rate, pressure drop, velocity and velocity limitations of liquids, gases and two-phase fluids according to API recommended practice 14E

Pipe Flow calculates the properties of a fluid (liquid or gas) flowing in a circular enclosed pipe at any point across its diameter and anywhere along its length.

Pipe calculates the properties of a pipe with closed or open ends including: buoyancy filled or empty, internally or externally pressurised and externally applied moments and forces

Spin calculates the angular velocity or delta value (for its polar moment of inertia) of stars, planets and moons according to Newton's laws of motion

Plastic Stress calculates the bending moments required to generate plastic deformation in metal beams