CalcPenny

Hi PH! I kept reaching for a quick, clean calculator and every result was buried in ads or wanted my email. So I built CalcPenny — every tool runs in your browser, shows the formula behind the number, and works on mobile. Would love feedback on which calculator to add next.

CalcPenny is a hub of free, privacy-friendly money calculators — loans, mortgage affordability, debt snowball vs avalanche, compound interest, FIRE, savings goals, inflation and freelance rates. Sliders + charts + plain-English explainers. No sign-up, nothing stored.