Free embeddable widgets
Embed a free betting calculator on your site
Add an accumulator calculator, each way or Rule 4 calculator, odds converter, golf dead-heat tool or system bet calculator to your blog, website, forum, tipster site, or build something new around one. One line of HTML, no signup, no API key, no rate limits. Works on Wordpress, Medium, Ghost, Notion, and any platform that allows iframe embeds. Got an idea but no site yet? We’ll help you scope it.
Accumulator calculator
Multi-leg bets with each-way support, per-leg odds-format switching (decimal / fractional / American), and live return calculation. Suggested height: 640px.
<iframe src="https://betcalc365.com/widget/accumulator"
width="100%" height="640"
style="border:0; max-width:520px"
loading="lazy"
title="Betting accumulator calculator"></iframe>
<p style="font-size:12px; margin:4px 0 0">Calculator by <a href="https://betcalc365.com/">betcalc365</a></p>Preview the widget
Odds converter
Convert between decimal, fractional and American odds in real time, with implied probability shown. Suggested height: 520px.
<iframe src="https://betcalc365.com/widget/odds-converter"
width="100%" height="520"
style="border:0; max-width:520px"
loading="lazy"
title="Odds converter, decimal, fractional, American"></iframe>
<p style="font-size:12px; margin:4px 0 0">Calculator by <a href="https://betcalc365.com/oddsconverter">betcalc365</a></p>Preview the widget
Each way calculator
Settles an each-way bet for any result: wins, places, unplaced, dead heat for any position or non-runner, with 1/4 or 1/5 terms, 2 to 8 places and Rule 4, with the win and place returns in one line. Built for racing previews and tips posts. Suggested height: 1360px.
<iframe src="https://betcalc365.com/widget/each-way"
width="100%" height="1360"
style="border:0; max-width:520px"
loading="lazy"
title="Each way calculator, wins, places, dead heats and Rule 4"></iframe>
<p style="font-size:12px; margin:4px 0 0">Calculator by <a href="https://betcalc365.com/each-way-calculator">betcalc365</a></p>Preview the widget
Rule 4 deduction calculator
Enter a non-runner’s price to get the Rule 4 deduction from the standard table, add more non-runners (capped at 90p) and see the new return, win only or each way. Handy for race-day tips posts when the non-runners come in. Suggested height: 1040px.
<iframe src="https://betcalc365.com/widget/rule-4"
width="100%" height="1040"
style="border:0; max-width:520px"
loading="lazy"
title="Rule 4 deduction calculator, non-runners and returns"></iframe>
<p style="font-size:12px; margin:4px 0 0">Calculator by <a href="https://betcalc365.com/rule-4-calculator">betcalc365</a></p>Preview the widget
Golf dead heat calculator
Top-N golf bet returns when finishers tie at the boundary of the paid places. Handles 2-way through 7+ way ties at the standard place fractions. Useful for tournament-week tipster posts and majors coverage. Suggested height: 640px.
<iframe src="https://betcalc365.com/widget/golf-dead-heat"
width="100%" height="640"
style="border:0; max-width:520px"
loading="lazy"
title="Golf dead heat calculator, Top N finishing positions"></iframe>
<p style="font-size:12px; margin:4px 0 0">Calculator by <a href="https://betcalc365.com/golf-dead-heat-calculator">betcalc365</a></p>Preview the widget
How to embed
Wordpress (block editor)
Add a Custom HTML block and paste the snippet above. Hit Update, the calculator appears inline.
Wordpress (classic editor)
Switch to the Text tab (top right of the editor) and paste the snippet where you want the calculator to appear.
Ghost
Use the HTML card (/html) and paste the snippet.
Generic HTML
Paste the snippet anywhere in your page body. No script tag, no additional CSS, no dependencies.
Forums (vBulletin, phpBB, Discourse, Reddit)
Most forums don't allow raw iframes, link to the calculator directly instead. The iframe approach works for self-hosted forums where the admin can grant iframe permissions.
System bet widgets
Eleven pre-configured system bet widgets, one URL per bet type. Each opens to the right bet pre-selected so blog readers don’t need to fiddle with mode tabs. Pick the URL that matches your post topic, the embed code structure is the same across all of them.
Trixie
3 selections · 4 bets · URL: /widget/trixie
<iframe src="https://betcalc365.com/widget/trixie"
width="100%" height="720"
style="border:0; max-width:520px"
loading="lazy"
title="Trixie calculator"></iframe>
<p style="font-size:12px; margin:4px 0 0">Calculator by <a href="https://betcalc365.com/trixie-calculator">betcalc365</a></p>Patent
3 selections · 7 bets · URL: /widget/patent
<iframe src="https://betcalc365.com/widget/patent"
width="100%" height="720"
style="border:0; max-width:520px"
loading="lazy"
title="Patent calculator"></iframe>
<p style="font-size:12px; margin:4px 0 0">Calculator by <a href="https://betcalc365.com/patent-calculator">betcalc365</a></p>Yankee
4 selections · 11 bets · URL: /widget/yankee
<iframe src="https://betcalc365.com/widget/yankee"
width="100%" height="760"
style="border:0; max-width:520px"
loading="lazy"
title="Yankee calculator"></iframe>
<p style="font-size:12px; margin:4px 0 0">Calculator by <a href="https://betcalc365.com/yankee-calculator">betcalc365</a></p>Lucky 15
4 selections · 15 bets · URL: /widget/lucky-15
<iframe src="https://betcalc365.com/widget/lucky-15"
width="100%" height="800"
style="border:0; max-width:520px"
loading="lazy"
title="Lucky 15 calculator"></iframe>
<p style="font-size:12px; margin:4px 0 0">Calculator by <a href="https://betcalc365.com/lucky-15-calculator">betcalc365</a></p>Canadian
5 selections · 26 bets · URL: /widget/canadian
<iframe src="https://betcalc365.com/widget/canadian"
width="100%" height="800"
style="border:0; max-width:520px"
loading="lazy"
title="Canadian calculator"></iframe>
<p style="font-size:12px; margin:4px 0 0">Calculator by <a href="https://betcalc365.com/canadian-calculator">betcalc365</a></p>Lucky 31
5 selections · 31 bets · URL: /widget/lucky-31
<iframe src="https://betcalc365.com/widget/lucky-31"
width="100%" height="840"
style="border:0; max-width:520px"
loading="lazy"
title="Lucky 31 calculator"></iframe>
<p style="font-size:12px; margin:4px 0 0">Calculator by <a href="https://betcalc365.com/lucky-31-calculator">betcalc365</a></p>Heinz
6 selections · 57 bets · URL: /widget/heinz
<iframe src="https://betcalc365.com/widget/heinz"
width="100%" height="840"
style="border:0; max-width:520px"
loading="lazy"
title="Heinz calculator"></iframe>
<p style="font-size:12px; margin:4px 0 0">Calculator by <a href="https://betcalc365.com/heinz-calculator">betcalc365</a></p>Lucky 63
6 selections · 63 bets · URL: /widget/lucky-63
<iframe src="https://betcalc365.com/widget/lucky-63"
width="100%" height="880"
style="border:0; max-width:520px"
loading="lazy"
title="Lucky 63 calculator"></iframe>
<p style="font-size:12px; margin:4px 0 0">Calculator by <a href="https://betcalc365.com/lucky-63-calculator">betcalc365</a></p>Super Heinz
7 selections · 120 bets · URL: /widget/super-heinz
<iframe src="https://betcalc365.com/widget/super-heinz"
width="100%" height="880"
style="border:0; max-width:520px"
loading="lazy"
title="Super Heinz calculator"></iframe>
<p style="font-size:12px; margin:4px 0 0">Calculator by <a href="https://betcalc365.com/super-heinz-calculator">betcalc365</a></p>System bet (any type)
Pick selections + a custom system · URL: /widget/system-bets
<iframe src="https://betcalc365.com/widget/system-bets"
width="100%" height="800"
style="border:0; max-width:520px"
loading="lazy"
title="System bet (any type) calculator"></iframe>
<p style="font-size:12px; margin:4px 0 0">Calculator by <a href="https://betcalc365.com/system-bets-calculator">betcalc365</a></p>Need a different widget? We’ll build one
The widgets above cover the most common use cases. If your blog, website, forum, tipster site or post needs something different, or you’ve got an idea you want help scoping, we can build a tailored widget to fit:
- Specific bet types, Lucky 15, Yankee, Patent, Goliath, system bet pickers, lay or each-way calculators tuned to your audience
- Sport-specific defaults, pre-configured for golf each-way, racing dead heats, football accas etc.
- Light theming, matched to your brand cobalt, accent colour or dark/light scheme
- Custom embed footer text, co-branded if you want a partnership credit on the widget
Quick to set up, most custom widgets ship in a day, often inside an hour for variants on what’s already built. No cost, no contracts, no rate limits, no minimum traffic commitments. The widget is yours to keep, maintained by us at our expense.
Drop us a line at hello@betcalc365.com with a short description of your site and the calculator you’d like to embed. Replies usually within two working days.
Why embed our widgets
- Free forever. No signup, no API key, no rate limits, no upgrade prompts. The widgets are maintained at our expense.
- Keeps readers on your page. Inline calculator means visitors don't bounce to an external site to work out a return.
- No tracking on your readers. The widget sets no cookies and loads no third-party scripts. We count widget loads with cookieless, aggregate analytics that don't identify your readers.
- Always up to date. We update the calculator logic centrally, your embed picks up improvements automatically. No version pinning, no broken iframes.
- Mobile-friendly out of the box. Responsive layout, touch-friendly inputs, dark-mode aware.
One small ask in return
We make these widgets free in exchange for one thing: a small credit link on the page you embed them on. That’s the only ask, no signup, no API key, no commission, no rate limits, no email capture. Every snippet above already ends with that line, so if you paste it as-is you’re done. If you’d rather place the credit somewhere else, this is the line:
Calculator by <a href="https://betcalc365.com">betcalc365</a>
Drop that anywhere on your post, under the iframe, in a footer, in your “tools we recommend” section. The widget keeps working without it, but the credit is what helps us keep these tools free for everyone.
(The “Powered by” line inside the widget itself is for your readers, the credit on your post body is what search engines see and what makes the widget economy actually work.)
Questions
Can I style the widget to match my site?
Not currently, the widget uses our brand cobalt and Inter font. A future version will accept a query-string accent colour. For now, the design is neutral enough to fit most betting / sports blog layouts.
Will you add more widgets?
Yes. If there’s a specific bet type you’d like to embed, the contact details on the About page are the fastest way to ask.
Will the widget break if you change something?
The URL is stable. Internal changes (layout tweaks, new bet types, performance fixes) are backwards-compatible by design. If we ever ship a non-backwards-compatible change, the new version will live at a versioned URL and your existing embed will keep working.