About
HexaCalc publishes calculators built to stay useful page by page: clear inputs, a visible formula, a worked example, stated limits and real sources. The catalogue covers math, finance, health, building work, energy, units, dates and grades.
Who writes these pages
An editorial team writes and maintains every page. It does not present itself as a medical practice, an accounting firm or an engineering office. When a real professional review exists, it will be named with its credentials; so far, none is claimed.
What the site does not do
No result is produced by a language model: every number comes from a tested TypeScript function. Health and finance pages give estimates, never a diagnosis or personalised advice. Unsourced statistics are refused rather than rounded off.
Getting in touch
To report an error or suggest a source: contact page — [email protected]