Do I need a paid Wix app to add a calculator?

No. Wix includes a free Embed HTML element that handles iframe embeds natively. Paid calculator apps from the Wix App Market are unnecessary for standard financial calculators.

Why is my Wix calculator cut off or showing a scrollbar?

Wix embeds use a fixed-size frame that you resize by dragging, and it does not auto-expand to fit content. Drag the element's bottom handle down until the whole calculator is visible. Wix requires more manual sizing than most platforms for this reason.

Can I add a calculator on the free Wix plan?

Yes. The Embed HTML element is available on free Wix plans. Your site will still display Wix ads and use a wixsite.com subdomain until you upgrade, but the calculator itself works normally.

How do I make the Wix calculator work on mobile?

Switch to the Mobile Editor using the phone icon at the top of the Wix Editor and resize the embed element separately for mobile. Wix keeps desktop and mobile layouts independent, so resizing on desktop does not carry over. Allow extra height on mobile since input fields stack vertically.

How to Add a Calculator to Wix (Free, No App)

The short version

Wix has a built-in Embed HTML element that accepts iframe code. Paste a snippet from the embed library, resize the frame, and publish. The one Wix quirk worth knowing: the embed frame is a fixed size you drag to fit — it will not auto-expand around the calculator, so budget a minute for resizing.

Step-by-step

1Copy an embed code

Open the CalcIQ embed library and click Copy on any calculator:

<iframe src="https://calciq.app/app?calc=sip" width="100%" height="500" style="border:none;border-radius:8px;" title="SIP Calculator - CalcIQ"></iframe>
<p style="font-size:12px;text-align:center;margin:8px 0 0">Powered by <a href="https://calciq.app" target="_blank" rel="noopener" style="color:#10b981;font-weight:600;text-decoration:none">CalcIQ</a></p>

2Add an Embed HTML element

In the Wix Editor click Add Elements (the + on the left), choose Embed Code, then pick Embed HTML. A placeholder box drops onto your page.

3Paste the iframe code

Click the placeholder, then Enter Code. In the panel, select the Code option (not "Website address"), paste the snippet, and click Apply.

If you choose "Website address" instead and paste a plain URL, Wix wraps it in its own frame — that works too, but the Code option gives you control over sizing and styling.

4Resize the frame, then publish

Drag the element's handles until the entire calculator is visible without an internal scrollbar. This step matters more on Wix than on other platforms because the frame does not grow to fit its contents.

Then switch to the Mobile Editor (phone icon at the top) and resize again — Wix keeps desktop and mobile layouts independent.

Sizing on Wix

Because the Wix frame is fixed, size the element itself rather than relying on the iframe's height attribute:

Calculator	Desktop element size	Mobile element size
Tip, age, BMI	600 × 500px	320 × 560px
EMI, SIP, FD	700 × 600px	320 × 680px
Rent vs Buy, Loan Comparison	800 × 700px	320 × 750px

If an internal scrollbar appears, the frame is too small — drag the bottom handle down another 100px. Visitors can still scroll inside the frame, but it looks unfinished.

Troubleshooting

Calculator cut off or scrollbar inside the frame — The Wix element is smaller than the calculator. Drag the bottom handle down.
Looks fine on desktop, broken on mobile — Wix layouts are independent. Open the Mobile Editor and resize there separately.
Nothing appears after clicking Apply — You may have used the "Website address" field with iframe code in it. Switch to the Code option and re-paste.
Works in the editor, not on the live site — You have unpublished changes. Click Publish.
Frame has an unwanted border — The snippet already sets border:none. Check that Wix's own element border is off in the Design panel.

Popular calculators for Wix sites

FAQ

Do I need a paid Wix app?

No. The free built-in Embed HTML element handles iframe embeds. App Market calculator apps are unnecessary for standard financial calculators.

Why is my calculator cut off?

Wix embed frames are a fixed size you drag to fit — they do not auto-expand. Drag the bottom handle down until the whole calculator shows.

Does it work on the free Wix plan?

Yes. Embed HTML is available on free plans. Your site keeps Wix ads and the wixsite.com subdomain until you upgrade, but the calculator works normally.

How do I fix mobile?

Switch to the Mobile Editor via the phone icon and resize the element separately. Desktop changes do not carry over to mobile on Wix.

Is it free and does it track visitors?

Free with no signup or API key. Zero tracking, no cookies — calculations run in the visitor's browser and their numbers never leave their device.