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How we make money

Last updated: October 2026

PersonalCalcs is free. To cover costs and keep building calculators, the site may have two sources of revenue.

Advertising

The site may show ads served by networks such as Google AdSense, always labeled as advertising. We do not pick individual ads and are not responsible for advertisers’ content or offers.

Partner links

Some links may lead to partner products and earn a commission if you sign up. These links are disclosed and do not change your price.

What we do not do

We do not publish sponsored content disguised as editorial content. Partners and advertisers do not influence formulas, assumptions or results. Comparisons are ranked only by the calculated result.