Free Calculator Widgets for Your Website
Add clean, lightweight CalcJoy calculators to your site with a simple iframe. No accounts, no tracking, no fees.
Why embed CalcJoy calculators?
- ·Free to use, including on commercial sites.
- ·No signup, no API keys, no tracking pixels.
- ·Lightweight iframe — no heavy bundle on your page.
- ·Calculators run client-side in the visitor's browser.
- ·Useful for readers, students and customers.
- ·Attribution links back to the full CalcJoy calculator.
How to embed
- Choose a calculator from the list below.
- Copy the iframe code under that calculator.
- Paste it into your website, blog post or CMS.
- Keep the small “Powered by CalcJoy” attribution.
Lightweight iframe · runs in your visitor's browser · inputs are not stored · embed pages are noindex.
Mortgage, debt and salary widgets that fit any article.
Hourly ↔ salary conversions for candidate-facing posts.
Percentage, discount and date math for classroom pages.
Recipe scaler and per-serving cost widgets readers love.
Auto loan and pricing math for client landing pages.
Drop a calculator into any post with one snippet.
Browse widget categories
30 widgets, grouped by use case.
Everyday calculators
Tips, percentages, dates and quick math.
Percentage Calculator
Open calculator →% of a number, X is what %, or increase by %.
Embed this calculator
Free · noindex iframeAdd this calculator to your site. Copy the snippet — it works on any page with a simple iframe.
Discount Calculator
Open calculator →Sale price and savings after a % off.
Embed this calculator
Free · noindex iframeAdd this calculator to your site. Copy the snippet — it works on any page with a simple iframe.
Business Days Calculator
Open calculator →Mon–Fri working days between any two dates.
Embed this calculator
Free · noindex iframeAdd this calculator to your site. Copy the snippet — it works on any page with a simple iframe.
Date Difference Calculator
Open calculator →Days, weeks and months between two dates.
Embed this calculator
Free · noindex iframeAdd this calculator to your site. Copy the snippet — it works on any page with a simple iframe.
Tip Calculator
Open calculator →Tip, total and per-person split.
Embed this calculator
Free · noindex iframeAdd this calculator to your site. Copy the snippet — it works on any page with a simple iframe.
Split Bill Calculator
Open calculator →Bill, tax and tip split evenly across people.
Embed this calculator
Free · noindex iframeAdd this calculator to your site. Copy the snippet — it works on any page with a simple iframe.
Work & pay calculators
Hourly, salary, paycheck and time-card tools.
Hourly to Salary Calculator
Open calculator →Hourly rate → annual, monthly, weekly pay.
Embed this calculator
Free · noindex iframeAdd this calculator to your site. Copy the snippet — it works on any page with a simple iframe.
Salary to Hourly Calculator
Open calculator →Annual salary → hourly and other pay periods.
Embed this calculator
Free · noindex iframeAdd this calculator to your site. Copy the snippet — it works on any page with a simple iframe.
Salary Calculator
Open calculator →Annual, monthly, weekly and hourly from one figure.
Embed this calculator
Free · noindex iframeAdd this calculator to your site. Copy the snippet — it works on any page with a simple iframe.
Time Card Calculator
Open calculator →Single shift hours, minutes and gross pay.
Embed this calculator
Free · noindex iframeAdd this calculator to your site. Copy the snippet — it works on any page with a simple iframe.
Paycheck Calculator
Open calculator →Estimate take-home from gross, taxes and deductions.
Embed this calculator
Free · noindex iframeAdd this calculator to your site. Copy the snippet — it works on any page with a simple iframe.
Debt & money calculators
Payoff plans, budgets, savings rate and runway.
Debt Payoff Calculator
Open calculator →Months to debt-free and total interest.
Embed this calculator
Free · noindex iframeAdd this calculator to your site. Copy the snippet — it works on any page with a simple iframe.
Credit Card Payoff Calculator
Open calculator →How long to pay off a card and interest cost.
Embed this calculator
Free · noindex iframeAdd this calculator to your site. Copy the snippet — it works on any page with a simple iframe.
Monthly Budget Calculator
Open calculator →Income vs expenses with savings-rate readout.
Embed this calculator
Free · noindex iframeAdd this calculator to your site. Copy the snippet — it works on any page with a simple iframe.
Savings Rate Calculator
Open calculator →What % of income you save each month and year.
Embed this calculator
Free · noindex iframeAdd this calculator to your site. Copy the snippet — it works on any page with a simple iframe.
Financial Runway Calculator
Open calculator →How many months your savings cover expenses.
Embed this calculator
Free · noindex iframeAdd this calculator to your site. Copy the snippet — it works on any page with a simple iframe.
Emergency Fund Calculator
Open calculator →Target fund size and months to reach it.
Embed this calculator
Free · noindex iframeAdd this calculator to your site. Copy the snippet — it works on any page with a simple iframe.
Housing & auto calculators
Mortgage, rent vs buy, car loan and fuel cost.
Mortgage Calculator
Open calculator →Monthly P&I, loan amount and total interest.
Embed this calculator
Free · noindex iframeAdd this calculator to your site. Copy the snippet — it works on any page with a simple iframe.
Mortgage Affordability Calculator
Open calculator →Affordable home price from income and debts.
Embed this calculator
Free · noindex iframeAdd this calculator to your site. Copy the snippet — it works on any page with a simple iframe.
Rent vs Buy Calculator
Open calculator →Monthly and total cost of renting vs buying.
Embed this calculator
Free · noindex iframeAdd this calculator to your site. Copy the snippet — it works on any page with a simple iframe.
Auto Loan Calculator
Open calculator →Car loan payment with tax, fees and trade-in.
Embed this calculator
Free · noindex iframeAdd this calculator to your site. Copy the snippet — it works on any page with a simple iframe.
Car Payment Calculator
Open calculator →Simple monthly car payment from price and APR.
Embed this calculator
Free · noindex iframeAdd this calculator to your site. Copy the snippet — it works on any page with a simple iframe.
Fuel Cost Calculator
Open calculator →Fuel cost per trip, month and year.
Embed this calculator
Free · noindex iframeAdd this calculator to your site. Copy the snippet — it works on any page with a simple iframe.
Food & grocery calculators
Recipe, grocery and per-serving cost tools.
Recipe Scaler Calculator
Open calculator →Scale ingredients up or down by servings.
Embed this calculator
Free · noindex iframeAdd this calculator to your site. Copy the snippet — it works on any page with a simple iframe.
Grocery Budget Calculator
Open calculator →Weekly, monthly and annual grocery costs.
Embed this calculator
Free · noindex iframeAdd this calculator to your site. Copy the snippet — it works on any page with a simple iframe.
Meal Cost per Serving Calculator
Open calculator →Cost per serving from total cost and servings.
Embed this calculator
Free · noindex iframeAdd this calculator to your site. Copy the snippet — it works on any page with a simple iframe.
Price per Unit Calculator
Open calculator →Compare value — price per ounce, gram or item.
Embed this calculator
Free · noindex iframeAdd this calculator to your site. Copy the snippet — it works on any page with a simple iframe.
Health & fitness calculators
BMR, TDEE and heart-rate zones.
BMR Calculator
Open calculator →Calories your body burns at rest.
Embed this calculator
Free · noindex iframeAdd this calculator to your site. Copy the snippet — it works on any page with a simple iframe.
TDEE Calculator
Open calculator →Daily calories with activity multiplier.
Embed this calculator
Free · noindex iframeAdd this calculator to your site. Copy the snippet — it works on any page with a simple iframe.
Heart Rate Zones Calculator
Open calculator →Max HR and five training zones.
Embed this calculator
Free · noindex iframeAdd this calculator to your site. Copy the snippet — it works on any page with a simple iframe.
Frequently asked
Are CalcJoy widgets free?
Yes — every CalcJoy widget is free to embed on any site, including commercial ones.
Can I embed them on my website?
Yes. Copy the iframe snippet under any calculator and paste it into any HTML, blog post or CMS that allows embeds.
Do the widgets store user inputs?
No. Widgets run entirely in the visitor's browser. No accounts, no databases, no tracking of inputs.
Can I remove the CalcJoy attribution?
Please keep the small “Powered by CalcJoy” line — it lets readers find the full calculator and keeps the widgets free for everyone.
Are the widget pages indexed by Google?
No. /embed/... pages are marked noindex so they don't compete with the full calculator pages in search.
Will the widget size adjust on mobile?
Yes — widgets render responsively inside the iframe. The default 640px height fits most calculators on phones and desktops.
Can I request another calculator widget?
Yes — reach out from the Contact page with the calculator you want.
Need a different calculator widget?
Tell us which calculator you'd like to embed — we'll prioritise the most requested ones. Contact CalcJoy →