Overview
CalculatorFox is a free online calculator library holding 1,336 tools across mortgages, tax, payroll, fitness, math and construction. Each result shows its working steps and cites the sources behind the formula.
Key Features
- Step-by-step workings: Every calculator lists its arithmetic in order and updates it live as figures change, so answers can be checked rather than trusted.
- Cited sources: Pages name the regulations and references they draw on, such as HUD mortgagee letters behind the loan maths.
- Free embeds: Three lines of code put any calculator on a website, with no ads inside it and no tracking of readers.
- Hosted figures: Businesses set opening values like an interest rate or tax band once in their account, and every embed showing that calculator follows.
- Saved scenarios: Paid plans store and compare scenarios, export them, and group client work per website.
It suits anyone who wants to see how a number was reached, with workspace extras kept behind a paid tier.
