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Free Calculator Widgets for Your Site

67 TOOLS · YOUR COLORS · SCRIPT OR IFRAME · FREE

Put any of 67 deterministic trading tools on your site: options, forex, risk and statistics, prediction markets, on-chain, spot and crypto futures. Pick the widget, set the colors, copy the code. No signup, no ads, one text link back to TradingCalc.

THEME
BACKGROUND AROUND THE CARDS

This is the space around the cards; the cards follow the theme.

Fill the calculator on its own page, press Copy share link, paste it here.

<!-- TradingCalc widget: please keep the link below exactly as given (address and words) -->
<div class="tradingcalc-widget" data-widget="suite"><a href="https://tradingcalc.io/widgets?utm_source=embed&amp;utm_medium=backlink&amp;utm_campaign=suite">TradingCalc Suite (12 crypto futures calculators) by TradingCalc.io</a></div>
<script async src="https://tradingcalc.io/embed.js"></script>

Keep the text link in the code exactly as given: do not change its address or its words. It is the attribution, it sits in your own page next to the frame, and it sends readers to the full calculator.

BADGE

If our calculators are useful to you, we would be grateful for a badge on your site

It is a small image with a link back to TradingCalc, free and with no script. Pick a look, copy the code and paste it on your site, in an article or in an app, wherever you credit your sources. It works with or without a widget on the page.

SHAPE
STYLE
SIZE
PREVIEW ON
Calculated by TradingCalc
<a href="https://tradingcalc.io/?utm_source=badge&utm_medium=referral&utm_campaign=calculated-by" target="_blank" rel="noopener"><img src="https://tradingcalc.io/badges/calculated-by-compact-dark.svg" alt="Calculated by TradingCalc" width="220" height="72" style="width: 220px; height: 72px;" /></a>
  • It is only an image and a link. No JavaScript, so it cannot slow your page or break when this site changes.
  • You may host the SVG yourself instead of linking to ours, as long as the link goes to TradingCalc. Keep the link address and the alt text as given.
  • The badge is free. No signup, no payment.
  • The text link form is for pages that want words instead of an image.

Installation guide and FAQ

Step-by-step installation, every option, what to do when something does not show, a paragraph to paste for your readers and the full FAQ are in the widget guide.

What you get

  • Deterministic math, the same engine as the calculator pages and the MCP server; the canonical vectors are public at /verify.
  • Two forms: a script that sizes the frame to its content, and a plain iframe. The script is versioned by file name, so a page that includes it keeps working.
  • Your colors, set by a whitelist (hex colors only), so a widget never carries raw CSS from a link.
  • A text link to the full calculator in your own page, next to the widget. It is a plain link, written in your HTML, and it is the only price.

All embeddable tools

Open a tool in the configurator, or read its page first.

CRYPTO PERPETUAL FUTURES

OPTIONS

FOREX

RISK AND STATISTICS

PREDICTION MARKETS

ON-CHAIN

CRYPTO SPOT

TRADE WORKFLOWS

FAQ
Q.01

Is this really free?

Yes. No signup and no API key. All we ask is that you keep the text link that comes with the code exactly as given, without changing its address or its words: it is the attribution, it sits in your own page next to the widget, and it sends readers to the full calculator. Widgets with live data call our market endpoints, which limit each visitor's IP address to protect the service, so ordinary traffic is fine; if you expect a lot of visitors on one page, write to us first.

Q.02

Which tools can I embed?

Every calculator and workflow page that has a tool on it: 67 in total, grouped below by area (options, forex, risk and statistics, prediction markets, on-chain, spot, crypto futures and trade workflows), plus one widget that holds the 12 crypto futures calculators behind a dropdown.

Q.03

Script or iframe?

The script form turns a small div into a frame that grows and shrinks with the result, so there is no scrollbar and no fixed height to guess. The iframe form is one plain tag with a fixed height, for sites that do not allow scripts. Both show the same widget and both carry the text link.

Q.04

What can I customize?

The accent color (links, highlights and buttons), the space around the cards (the theme default, transparent or a color of your own), compact spacing, and start values: fill the calculator on its own page, press Copy share link, and paste the link into the configurator to open your embed with those numbers. The theme is dark or light, and the cards follow it.

Q.05

Does it work on WordPress, Wix, Webflow, or a plain HTML site?

Anywhere that accepts a custom HTML block: WordPress (Custom HTML block), Wix, Webflow, Squarespace, Ghost, or a hand-written page. The script form needs a block that allows script tags; otherwise use the iframe form.

Q.06

Does the data stay up to date?

Widgets that use live prices or funding rates fetch them when they load, under the same per-visitor limit as the calculator pages; the formulas are the same ones behind the calculator pages and the MCP server. There is nothing on your end to keep updated.

Q.07

Is anything my visitors type stored?

No. What a visitor types into a widget stays in their browser; it is not stored or forwarded, in the frame or on the site.

Q.08

Will it slow down my page?

The frame loads lazily and is self-contained, so it does not block the rest of your page from rendering, same as embedding a video or a tweet. The loader script is a few kilobytes and reads nothing from your page except its own div.