Clear by design
We keep inputs, results, and explanations straightforward so the tools are easy to use on any device.
About volcaprint
Health numbers, made easier to understand
volcaprint creates free calculators and plain-English guides that help people explore common health and fitness measurements with more clarity.
What we do
Our calculators turn widely used formulas into simple, accessible tools. Alongside each tool, we explain what the result means, how it is calculated, and where its limitations are.
volcaprint is an educational resource—not a healthcare provider. Results are estimates and should never replace advice from a qualified healthcare professional.
Responsible information
We avoid diagnoses, guarantees, and exaggerated claims, and we explain the limits of every estimate.
Privacy-minded
Calculator entries are processed in your browser and are not submitted to volcaprint or stored in an account.
Explore the library
Start with a calculator or guide
Use a free tool, then read the supporting guide to understand the result in context.