Privacy policy
Short version: the calculators run in your browser, we use Google Analytics and Microsoft Clarity to see how the site is used, and we don't run ads or sell data.
Last updated Oct 28, 2026.
Your inputs stay with you
Amounts, dates and prices you type are processed on your device, not on our servers.
Analytics, not ads
Google Analytics and Microsoft Clarity tell us which pages help people. There are no advertising cookies.
No accounts
There is no sign-up, so we hold no names, emails or passwords.
The calculators
Everything you enter is calculated in your browser. Your inputs are written into the page address so you can bookmark or share a result; they are not stored on our servers. Your language choice is saved in your browser's local storage under the key lang.
Price data
To show the latest prices, your browser requests public market data directly from Coinbase Exchange (api.exchange.coinbase.com). Like any website you load, Coinbase receives your IP address with that request.
Analytics
We use Google Analytics to count visits and see which pages and tools are used, and Microsoft Clarity to see how people use pages, including scrolling, clicks and session recordings. They collect usage data such as your device, browser, approximate location and the pages you view. Their privacy policies apply: Google, Microsoft.
Our web server
Like most websites, our server keeps standard access logs (IP address, page requested, browser) for security and troubleshooting. They are deleted on a rolling basis.
Affiliate links
When you follow a partner link, the partner's site may set its own cookies to attribute the referral. Its privacy policy applies there. See the affiliate disclosure.
Cookies used on this site
| Name | Set by | Purpose | Lasts |
|---|---|---|---|
_ga, _ga_* | Google Analytics | Tells visits from different browsers apart | 2 years |
_clck, CLID | Microsoft Clarity | Recognizes a returning browser | 1 year |
_clsk | Microsoft Clarity | Groups page views into one session | 1 day |
MUID | Microsoft | Identifies the browser across Microsoft services | 1 year |
Your choices
You can block or delete cookies in your browser settings, use a content blocker, or install Google's Analytics opt-out add-on. The calculators keep working either way.
Changes
If this policy changes, the new version will be posted on this page with a new date.