About UnitTables

UnitTables.com is a free online platform that provides over 1,600 calculators and conversion tools designed for professionals, students, and everyday users. Whether you need to solve a complex engineering equation, convert between units of measurement, or plan your household budget, UnitTables has the right tool for the job.

Our Mission

Our mission is to make accurate, easy-to-use calculation tools freely available to everyone. We believe that access to reliable math, science, and engineering tools should not be locked behind paywalls or cluttered with intrusive ads. UnitTables is built to be fast, accessible, and straightforward so you can get the answers you need and move on with your work.

What We Offer

With more than 1,600 calculators spanning 13 categories, UnitTables covers a wide range of disciplines and use cases:

From BMI and TDEE calculators in Health & Fitness to Ohm's Law and wire-size calculators in Electrical, every tool is built with domain-specific formulas and clear explanations so you understand the result, not just the number.

Our Commitment to Accuracy

Accuracy is the foundation of everything we build. Each calculator on UnitTables is:

• ✓Formula-driven — based on established mathematical, scientific, and engineering formulas sourced from recognized standards and references.
• ✓Tested — verified against known results and edge cases to ensure reliability across a wide range of inputs.
• ✓Transparent — formulas and explanations are displayed alongside results so you can verify the logic yourself.

If you ever spot an error or have a suggestion for improvement, we encourage you to reach out. Keeping our tools accurate and up to date is an ongoing effort, and user feedback plays a vital role in that process.

Get in Touch

Have a question, feature request, or feedback? We would love to hear from you. Visit our Contact page to send us a message. We do our best to respond to every inquiry in a timely manner.