Widgets
Free calculators for your website
Give your readers a working calculator instead of a formula. Copy a snippet, paste it into any page (WordPress, Webflow, Ghost, Substack custom HTML or plain HTML) and you’re done.
Free, no account
No sign-up, no API key, no usage limits.
No ads, no tracking cookies
Calculations run in the visitor’s browser. Nothing they type is stored.
Fits your page
Responsive, resizes its height automatically, light or dark theme.
Always up to date
Rates, formulas and fixes ship to every embed automatically.
Live preview: Compound Interest Calculator
Free for blogs, media and financial advisors. Paste this code where you want it to appear. It resizes itself to fit.
Calculators (24)
Compound Interest Calculator
Loan Payoff Calculator
Auto Loan Calculator
Credit Card Payoff Calculator
Debt Snowball vs Avalanche Calculator
Refinance & Debt Consolidation Calculator
Credit Card Installment Calculator
Budget Planner (50/30/20 Rule)
Emergency Fund Calculator
Savings Goal Calculator
Retirement Calculator
Financial Freedom Calculator (FIRE)
Investment vs Debt Calculator
Inflation Impact Calculator
Real ROI Calculator
Net Worth Calculator
Salary & Paycheck Calculator
Side Hustle Income Calculator
Hourly to Salary Calculator
Tip Calculator
Mortgage Payment Calculator
Mortgage Affordability Calculator
Housing Cost Explorer
Financial Health Score
Fair use
Widgets are free for any site. Please keep the small “by Finelta” credit link under the widget. It’s what keeps this free. Don’t frame the full site or remove the attribution.