Privacy Policy

Short version: the calculators do not collect anything. Every calculation happens in your browser, on your device. The numbers you type are never sent to us, stored, or shared — there is no account, no form and no database behind these pages.

Analytics

Like most sites, we use Google Analytics to count visits and see which calculators people find useful. That tells us pages viewed and rough location (country/city level), not who you are.

Advertising

We may show ads through Google AdSense. Google and its partners use cookies to serve ads based on visits to this and other sites. You can opt out of personalised advertising in Google's Ads Settings, and your browser lets you block or clear cookies at any time.

External links

Pages link to sister ToolDunya sites and occasionally to official sources (for example the IRS). Those sites have their own privacy policies.

Changes

If this policy changes, the new version will be posted on this page. Questions: see the contact page.

Last updated: 2026-11-12.