STEM educators, reference sites, travel publishers, cooking resources and classroom websites.
Embed it in a lesson or reference article so readers can check length, mass, temperature, area, volume and other unit conversions in context.
The widget is interactive. Inputs remain in the visitor’s browser.
Paste the complete snippet into an HTML block in WordPress, Webflow, Squarespace or your website template. Keep the included attribution link visible.
Percentage CalculatorSolve a common percentage-of-a-number problem and show the decimal form plus values after adding or subtracting the percentage.
Simple Interest CalculatorCalculate simple interest and ending balance from principal, annual rate and time while displaying the underlying classroom formula.
Mortgage CalculatorGive home buyers an instant estimate of principal, interest, property tax, insurance, PMI, HOA fees and optional extra payments without sending their inputs to a server.
House Affordability CalculatorHelp prospective buyers estimate a practical home-price range from household income, down payment, debt, interest rate, taxes and insurance.