Engineering Calculators

This page brings together every calculator on the site in one place, grouped by subject so you can find the right tool quickly. Each calculator takes your inputs and works through the underlying formula for you, showing the method as well as the answer where it helps to see how the result was reached.

Broadly, the calculators fall into a handful of areas:

• Area & volume — flat-sided and round-sided shape calculators for cross-sectional area, perimeter, volume, and related geometric properties.
• Beam deflection — cantilever and simply supported beam calculators covering point, uniform, varying, and combined loads.
• Hydraulics & pneumatics — cylinder force, pump flow, pipe sizing, pipe loss, and Reynolds number calculators.
• Power, torque & motion — power/torque/speed relationships, and force/torque/ distance calculators.
• Hardware & bearings — bearing life, limits & fits, keyway size and strength, bolt strength, o-ring length, and tapping drill size calculators.
• Materials & sections — springs, sheet metal, and section property calculators.

If you're not sure which calculator you need, the Information pages cover the background and standards behind most of these tools, which can help narrow down the right one for your situation.

Please use the tabs below to find the calculator you require

RELATED PAGES

• Engineering Information — reference charts and standards background
• Unit Conversion Calculator
• Engineering Glossary

FREQUENTLY ASKED QUESTIONS

Are these calculators free to use?

Yes, every calculator on this site is free to use, with no sign-up required.

How accurate are the results?

The calculators use standard engineering formulas and, where relevant, the same reference data used throughout the site's information pages. They're intended as a design aid and quick check — for safety-critical or load-bearing applications, always verify results against the relevant standard and, where appropriate, get them checked by a qualified engineer.

Can I use these calculators for both metric and imperial units?

Most calculators accept metric input. For unit conversions between metric and imperial, use the universal unit converter alongside the calculator you need.

I can't find a calculator for what I need — can you add one?

Possibly — get in touch via the Contact Us page with what you're trying to calculate and we'll see what we can do.