Built for scale and clarity

The platform behind the calculators is designed to grow to thousands of pages without losing speed or consistency.

• Data-driven pages

  Calculators are defined as data — inputs, formula, copy — and rendered by one shared system.

• Live calculation

  Results update as you type, computed in the browser with no round trip to a server.

• Shown working

  Formulas, factors and intermediate steps sit right below every answer.

• Instant search

  Keyword search across titles, slugs and synonyms from the header on every page.

• Accessible by design

  Labelled inputs, live regions for results, keyboard-friendly navigation and strong contrast.

• Privacy first

  Your inputs stay on your device. No calculation logging, no account required.