Free calculator widgets for your website
Add a working fin·calc calculator to any page with one line of code. Choose a calculator, a theme, a width and a currency, check the live preview, then copy the code. Free, no sign-up, no API key. The widgets set no cookies, store nothing and load nothing from anywhere else.
Choose a calculator
Using the widgets
Paste the code where you want the calculator to appear. It works in any HTML page, WordPress (Custom HTML block), Webflow, Squarespace, Wix (Embed code) and most site builders. Visitors can type their own figures; the starting numbers are only examples.
Each widget carries a small “Calculator by fin·calc” credit link to the full calculator. Please leave it in place: it is the only thing we ask in return.
What the widgets do not do
No cookies, no local storage, no analytics, no ads and no requests to any other server: each widget is one HTML file with its CSS and JavaScript inside it. The optional auto-height script only listens for the widget’s own height message from fincalcyou.com. Rates are never filled in for you: the widgets show no live or published bank rates, so the result depends on the rate your visitor types.
The maths
The formulas are the same ones used across fincalcyou.com: reducing-balance payments for the mortgage and car loan, quarterly compounding for fixed deposits, monthly compounding for compound interest and SIP, and 2.5% of net wealth for zakat, with the nisab worked out as 87.48 g of gold at the price your visitor enters. See the methodology and the financial disclaimer.
Prefer a widget that renders inline without an iframe? Use the script embed instead.