Where do the prices come from?

CoinGecko, live. If they cannot be fetched the calculator falls back to sample values and says so on screen.

Is anything I type sent anywhere?

No. Amounts, quantities and average prices stay in your browser.

Does it tell me what to buy?

No. It calculates what you enter. It does not recommend coins or exchanges, and it does not forecast prices.

Put a calculator on your site

Paste one line of code. Free, with nothing to install.

No JavaScript neededWorks on any domainLive prices, automaticallyFree · no account

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Crypto Profit Calculator

Enter a buy price and quantity to see profit after fees and the break-even price.

Suggested height 640px/embed/basicLive prices

Follows the visitor's own setting

<iframe src="/embed/basic?lang=en" width="100%" height="640" loading="lazy" style="border:0;border-radius:16px;max-width:520px" title="Crypto Profit Calculator by TokenPost"></iframe>

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Average Cost Calculator

Average buy price across several purchases, and where buying more would move it.

Suggested height 720px/embed/average-priceLive prices

Follows the visitor's own setting

<iframe src="/embed/average-price?lang=en" width="100%" height="720" loading="lazy" style="border:0;border-radius:16px;max-width:520px" title="Average Cost Calculator by TokenPost"></iframe>

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Kimchi Premium Calculator

Pulls Upbit and Binance prices to show the gap between Korea and the global market.

Suggested height 560px/embed/kimchi-premiumLive from exchanges

Follows the visitor's own setting

<iframe src="/embed/kimchi-premium?lang=en" width="100%" height="560" loading="lazy" style="border:0;border-radius:16px;max-width:520px" title="Kimchi Premium Calculator by TokenPost"></iframe>

Worth knowing before you paste

Does it work on WordPress or a blog platform?

Paste the code in your editor's HTML mode. Some free blog hosts block iframes, and there it will not appear.

The widget is cut off

The height in the code above already matches the widget. If it still cuts off, the spot you pasted into is narrow enough to push content down — raise height a little.

I want it on a dark site

Pick the Dark theme and copy the code. Auto follows the visitor's device setting, which is easier if the page you are pasting into supports both.

Does it cost anything?

No. No account, and no usage limit.

* The widget shows calculations as a guide. It does not recommend any coin or investment.