Every S4U.PRO calculator can be added to your website, blog or trading forum for free. Pick a calculator and a language, copy the code and paste it into your page — visitors calculate lot size, margin, drawdown or martingale right on your site.
Why add a calculator
- A useful tool without a developer. One block of code that works in WordPress, Wix, Blogger, Squarespace, forums and any builder that accepts HTML.
- Visitors stay longer. A calculator is an action: people enter their numbers and come back to it.
- 16 languages. English, Spanish, Portuguese, German, French, Italian, Dutch, Ukrainian, Arabic, Chinese, Indonesian, Vietnamese, Turkish, Persian, Thai and Russian.
- Always up to date. Exchange rates refresh automatically, fixes and new features appear on your site by themselves.
- Responsive. Fits the column width and phones; the height adjusts automatically.
How to embed the calculator
- Choose a calculator and language in the builder above and click “Copy code”.
- WordPress: add a “Custom HTML” block and paste the code. In the classic editor use the “Text” tab.
- Wix, Blogger, Squarespace: use the “Embed HTML” / “HTML/JavaScript” / “Code” element.
- Publish the page. If your site strips scripts, the calculator still works with a fixed height.
Terms of use
The calculators are free for any site, including commercial ones. The only condition: keep the S4U.PRO credit link under the calculator — it lets us keep improving the tools. Inside the calculator there’s a small S4U.PRO bar with links to a bonus and our EA — no pop-ups or intrusive ads.
Need a calculator in your design, with your broker or a different set of instruments? Contact us.
Available calculators
Lot size by risk, pip value, margin, profit and loss, risk/reward, compound interest, drawdown, martingale and grid, average price and cent account. Each one also has a full version with a guide — see the list below.
FAQ
Is it really free?
Yes. No sign-up, no limits, no paid plans.
Will the iframe hurt my site’s SEO?
No. The calculator loads lazily (loading=»lazy») and doesn’t slow the main page, and its content doesn’t duplicate your text.
Can I add several calculators to one page?
Yes, paste several codes. One copy of the height script is enough, but duplicates don’t hurt.
How do I change the calculator language?
Choose a language in the builder and the code updates. Or change lang=en in the iframe address to another language code (es, de, fr…).