About Browser Calculators

Browser Calculators helps you find practical calculation and reference tools and use them directly in your browser.

Calculations with their context

Each tool provides its method, intended population, exclusions and sources. Medical calculations and reference tables support professional judgment informed by the individual situation.

Getting started

Search the tool directory by name or abbreviation. Select a star to save a favorite in this browser.

Your inputs

Calculations run in your browser. Values entered into calculators are not sent to a server or stored with your favorites.

Feedback

When you select a rating or send feedback, your rating, category, optional comment, calculator ID, language, site version, prompt trigger and receipt time are stored in a Cloudflare database to improve this site. Calculator inputs and results are not sent automatically. Do not include patient or personal information. Feedback is reviewed privately by the operator.

Automatic prompts are limited to once per session. A response timestamp is stored in this browser to suppress prompts for that calculator for 30 days. Comments are not saved to persistent browser storage or Google Analytics. Sharing opens only on your request and includes the calculator name and link.