Free calculators for your website

Give your readers a working calculator right on your page. Every tax, finance and budget calculator on Converterin can be embedded for free: copy the code, paste it into your site and it works straight away. The calculators stay up to date automatically, for example when tax rates change.

Try it: the VAT calculator, embedded

VAT Calculator – Converterin

How it works

  1. Choose a calculator from the list below.
  2. Click “Copy code” and paste the code into your page, as HTML (in WordPress, use a “Custom HTML” block).
  3. Done: the calculator adjusts its height and works on phones, tablets and computers.

Why use them

  • Free, with no account and no ads inside the calculator
  • Tax rates and formulas are kept up to date for you
  • Fits any page and adjusts its height automatically
  • Available in English, Spanish, German, French and Portuguese
  • Each calculator explains the formula on its own page, so readers can check the result

Calculators you can embed

Tax Calculators

China Income Tax Calculator
Calculate Chinese individual income tax (IIT) on annual comprehensive income for 2026. Enter your yearly…
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Australian Income Tax Calculator
Calculate Australian income tax for the 2026-27 financial year (1 July 2026 to 30 June 2027) for residents…
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France Income Tax Calculator
This calculator estimates French income tax (impôt sur le revenu) with the progressive scale that applies to…
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Germany Income Tax Calculator
Calculate German income tax (Einkommensteuer) for 2026 from your taxable income (zu versteuerndes Einkommen)…
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Indian Income Tax Calculator
Calculate Indian income tax for FY 2026-27 under the new tax regime, which is the default. Enter your gross…
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Malaysia Income Tax Calculator
Calculate Malaysian personal income tax for resident individuals for year of assessment 2026. Enter your…
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Italy Income Tax Calculator
Calculate Italian personal income tax (IRPEF) for 2026 from your taxable income (reddito imponibile) in…
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Japan Income Tax Calculator
Estimate Japanese national income tax (shotokuzei) for 2026 from your taxable income in yen, after deductions…
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New Zealand Income Tax Calculator
Estimate New Zealand income tax (PAYE) for the 2026-27 tax year from your annual income in New Zealand…
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Philippines Income Tax Calculator
Calculate Philippine income tax for 2026 with the graduated rates of the TRAIN law for individuals earning…
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Turkey Income Tax Calculator
Calculate Turkish income tax (gelir vergisi) for 2026 on wage income. Enter the annual tax base in lira –…
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UK Income Tax Calculator
Work out UK income tax and employee National Insurance for the 2026/27 tax year (6 April 2026 to 5 April…
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US Income Tax Calculator
Estimate US federal income tax for tax year 2026 (returns filed in 2027) from your gross annual income in…
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Brazil Income Tax Calculator (IRRF)
Calculate the Brazilian income tax withheld from a monthly salary (IRRF) and your take-home pay for 2026…
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Financial Calculators & Tools

Break-Even Calculator
Find the break-even point: the number of units you need to sell to cover all fixed and variable costs. Enter…
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GDP Calculator
Calculate gross domestic product (GDP) with the expenditure approach from its five components: personal…
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VAT Calculator
Add VAT to a net price or remove it from a gross price. Enter the amount and the VAT rate and choose whether…
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Straight Line Depreciation Calculator
Calculate yearly depreciation with the straight-line method. Enter the cost of the asset, its salvage…
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Portfolio Return Calculator
Calculate the expected return of an investment portfolio of three assets from the return of each asset and…
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Interest Coverage Ratio Calculator
Calculate the interest coverage ratio of a company: how many times its operating profit covers its interest…
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Monthly Annuity Payments Calculator
Find what three monthly payments of 1 are worth at the end of a quarter, given the annual interest rate. The…
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Quarterly Annuity Calculator (Recurring Deposit)
Calculate the value of regular monthly deposits with interest compounded every quarter, as in a recurring…
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Gratuity Calculator India
Calculate the gratuity an employee in India receives on leaving a job after at least five years of continuous…
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Annuity Due Payment Calculator
Calculate the regular payment needed to reach a target amount with an annuity due, where payments are made at…
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Budget Calculators

Phone Bill Calculator
Keep track of the cost of a phone call while you talk. Enter the connection fee charged on every call and the…
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Discounted Payback Period Calculator
Calculate the discounted payback period of an investment: the time it takes for the discounted cash flows to…
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Markup and Margin Calculator
Work out markup, gross margin, selling price and profit from the cost of a product. Choose your currency…
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Electricity Bill Calculator
Calculate your electricity bill from two meter readings. Enter the previous and the current reading in kWh…
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Car Running Cost Calculator
Find out how much it costs to drive your car per kilometre or mile, and its real fuel consumption. Enter the…
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Household Budget Calculator
Plan your household budget: enter all sources of income (salary, rental income, pension, interest and…
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Cost of Living Comparison Calculator
Compare the cost of living in two cities and find the salary you need in the new city to keep the same…
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Markup Selling Price Calculator
Calculate the selling price of a product from its cost and the markup percentage you want to add. The result…
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Car Expense Calculator
Plan the full cost of owning a car: fuel, insurance, maintenance and repairs, servicing, lubrication…
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Payback Period Calculator
Find out how long it takes to recover an investment from the cash it generates. Enter the initial investment…
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Click-Through Rate (CTR) Calculator
Calculate the click-through rate (CTR) of an online ad campaign from the cost per impression and the cost per…
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Cost Per Click (CPC) Calculator
Calculate the cost per click (CPC) of an ad campaign from the cost per thousand impressions (CPM) and the…
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Equivalent Annual Annuity (EAA) Calculator
Compare investment projects with different lifetimes with the equivalent annual annuity (EAA) approach. Enter…
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Frequently asked questions

Is it really free?

Yes. You can embed as many calculators as you like on as many pages as you like. We only ask you to keep the small link to the calculator under it.

Will it slow down my page?

No. The calculator loads in a lightweight frame only when a visitor scrolls to it, and it contains no ads or tracking from your side.

Can I use it in another language?

Yes. Open this page on our Spanish, German, French or Portuguese site and copy the code there: the calculator will appear in that language.