ConvertUnits.Engineer was built to solve a simple but persistent problem: reliable unit conversions for real engineering work.

Engineers and scientists convert units every day-length, mass, volume, temperature, pressure, force, energy, and more. While many general-purpose calculators exist online, they often fall short when it comes to specialized, discipline-specific units that professionals actually use. If you’ve ever tried to convert something like pounds per cubic foot (pcf) to kilonewtons per cubic meter (kN/m³), you’ve probably discovered that even popular tools don’t always support what you need.

That frustration is exactly why this site exists.

Built by an Engineer, for Engineers

ConvertUnits.Engineer was created by a geological and geotechnical engineer with over 20 years of professional experience working on real-world engineering problems. In day-to-day practice, unit conversions aren’t academic, they directly affect calculations, designs, reports, and decisions. When the available tools didn’t support many of the specialty units used in geotechnical, geological, and civil engineering, the solution was to build something better.

This site focuses on engineering-relevant unit systems, including SI (metric), imperial, and hybrid units that appear in legacy drawings, technical specifications, laboratory data, and field measurements. The goal is not just to convert common quantities, but to support the full range of units professionals encounter across disciplines.

Practical, Accurate, and Engineer-Friendly

ConvertUnits.Engineer is designed to be fast, flexible, and friendly for scientists and engineers. The interface is intentionally simple, avoiding unnecessary clutter while still supporting a wide range of unit types and conversions.

Every conversion is based on standard mathematical relationships between units. While the tools are intended for reference and everyday use, users are always encouraged to verify results independently when applying them to critical engineering or scientific work.

If you don’t see a unit you need, feedback is most welcome. Many of the units and features on this site are added specifically to support real engineering workflows, not just textbook examples.

About the Founder

ConvertUnits.Engineer is part of a broader effort by Randy Post to build useful, niche tools that solve practical problems for engineers, technical professionals, and the public.

Related projects include geoprac.net, a resource site focused on topics relevant to practicing geological and geotechnical engineers, and namedrawing.com, a lightweight tool designed to generate holiday and gift-exchange name drawings.

Each site follows the same philosophy: keep things simple, accurate, and genuinely useful for the people who rely on them.

Designed for Real-World Use