Embed a Calculator on Your Site — Free
A drop-in widget: paste two lines of HTML and a live, working finance calculator appears on your page. No API key, no account, no JavaScript to install, and no cost — now or later.
Built and maintained by EMICalcs — 44 free calculators for Indian money decisions. Every formula is covered by 159 automated tests that run on every deploy, and each statutory figure cites the rule it comes from. If you want to know how that works before you embed anything, the editorial process page sets it out.
Quick start
Paste this wherever you want the calculator to appear:
That is the whole integration. To use a different calculator, swap the slug in both URLs — the list is below.
⚠️ The one thing to get right
Keep the <p> credit line outside the iframe, exactly where it is above.
Anything inside an <iframe> belongs to the framed document, not to your page. A link placed in there is not part of your page to a reader's browser, and not part of it to a search engine crawling you. The credit line sits in your HTML, which is what makes it work — and it is the only thing we ask in return.
Please don't add rel="nofollow" or rel="sponsored" to it. Nothing was paid for this, in either direction.
Choose a calculator
Any of the 44 will work. These six tend to suit a general personal-finance audience best:
| Calculator | Slug | Why it fits |
|---|---|---|
| Income Tax FY 2026-27 | income-tax-calculator | Freelancers and contractors filing their own returns |
| GST | gst-calculator | Anyone raising invoices — add or strip GST |
| GST Interest & Late Fee | gst-interest-calculator | Late-filing interest, computed the way Rule 88B(1) specifies |
| In-Hand Salary (CTC to Take-Home) | salary-calculator | What an offer letter actually pays each month |
| Loan EMI | loan-emi-calculator | The general-purpose one |
| Home Loan EMI | home-loan-calculator | Highest-traffic category |
All 44 slugs
8th-pay-commission-calculatoraverage-calculatorbrokerage-calculatorcagr-calculatorcar-loan-calculatorcompound-interest-calculatorcredit-card-emi-calculatorepf-calculatorfd-calculatorgoal-sip-calculatorgold-loan-calculatorgratuity-calculatorgst-calculatorgst-interest-calculatorhome-loan-calculatorhome-loan-eligibility-calculatorhome-loan-prepayment-calculatorhome-loan-tax-benefit-calculatorhra-exemption-calculatorincome-tax-calculatorinflation-calculatorloan-emi-calculatorlumpsum-calculatorno-cost-emi-calculatornps-calculatornsc-calculatorod-loan-calculatorpercentage-calculatorpersonal-loan-calculatorpost-office-mis-calculatorppf-calculatorrd-calculatorretirement-calculatorsalary-calculatorsalary-hike-calculatorsimple-interest-calculatorsip-calculatorsolar-loan-calculatorstep-up-sip-calculatorstock-average-calculatorsukanya-samriddhi-calculatorswp-calculatortds-calculatorxirr-calculator
Every calculator page on EMICalcs also carries its own ready-made snippet under “Embed this calculator on your website — free”. Open the page, click, copy.
Technical notes
Framing is allowed. The /embed/ path is served with content-security-policy: frame-ancestors *, so it renders on any domain. The rest of the site is SAMEORIGIN; the embed path is the deliberate exception.
Sizing. height="760" suits most calculators. A few with longer schedules want more — adjust to taste. width="100%" with max-width:680px keeps it responsive without overflowing a narrow column.
It won't slow your page down. loading="lazy" means the iframe only loads when it is scrolled into view. The widget has no framework, no runtime dependencies and no CDN calls.
JavaScript. The markup and the input fields are static HTML, but the arithmetic runs in the reader's browser — so with JavaScript disabled the calculator renders and does not compute. Worth knowing: your credit link is plain HTML in your own page, so it is unaffected either way.
No tracking of your readers. The embed carries no ads and no analytics. The link back includes ?utm_source=embed only so we can see which partners send traffic.
It stays current. Statutory figures — tax slabs, GST rates, gratuity ceilings — are updated at our end. Your embed picks the change up automatically; there is nothing to re-paste.
The URLs are stable. If a calculator is ever retired, its embed URL will redirect rather than 404.
Checking it worked
After publishing, confirm the credit link is in your page's own HTML:
You should get back one anchor carrying rel="noopener". If nothing comes back, the link most likely ended up inside the iframe — see the warning above.
Questions
Write to hello@emicalcs.com — happy to help with sizing, styling, or picking the calculator that fits your audience. If you would like one built for a topic we don't cover yet, ask; that is how several of these started.