About Us

Welcome to Calculator Headquarters!

At Calculator Headquarters, our mission is to provide you with fast and accurate answers to common day-to-day problems. Whether you need to make financial decisions, plan your fitness routine, manage your home, or explore other aspects of daily life, our online tools and calculators are here to assist you.

We believe that valuable tools like these should be accessible to everyone. That’s why Calculator Headquarters provides all our calculators completely FREE of charge. No subscriptions, no hidden fees, just free access to the tools you need to simplify your life and make informed decisions.

Our calculators are designed to be simple, intuitive, user-friendly, and reliable, ensuring that you get the answers you need in no time. Our team of experts have meticulously developed these tools to cover a wide range of topics, and we are committed to continually expanding our calculator collection, ensuring that we meet your evolving needs and provide solutions for various aspects of your life.

At Calculator Headquarters, we prioritize accuracy. We understand the importance of precise calculations, especially when it comes to making informed decisions. You can trust that our calculators are built on sound mathematical principles, giving you peace of mind that the results are reliable and trustworthy. Find an error with one of our tools? Please reach out and let us know!

Start exploring our calculator collection today and unlock a world of accurate and reliable calculations. We’re here to empower you with the tools you need to make the most of your everyday life.

Calculator Headquarters – Empowering Decision-Making with Calculated Precision


Our Team


Founder and Lead Engineer

Kevin Sando is a mechanical engineer with a degree from the Rochester Institute of Technology. He has move than a decade of experience in new product design, prototyping and early stage manufacturing. He loves to code, and this technical background has led him to create all sorts of useful tools for his daily work. Calculator Headquarters was born as a place to host and share these resources free of charge to all who could benefit from them.

As the site has grown so has Kevin’s resolve to make this one of the most comprehensive libraries of free tools on the internet – with resources for both work and home. Bookmark Us, as new calculators and online tools are being developed all the time!

In his free time Kevin can be found spending time with his family, following the markets, and sharpening his coding skills, He is also the founder of several online brands in the pet space and a digital marketing company.