Watcharu Finance

Free, private mortgage and loan calculators. Every calculation runs in your browser — nothing is uploaded or stored, and every result has a shareable link.

Mortgage rates today: 30-year fixed averaging 6.76%, 15-year averaging 6.09% (Freddie Mac, week of September 10, 2026). Try the mortgage calculator →

Mortgage & home

Loans & debt

Saving & investing

Income & taxes

Calculators by state

Pick your state for pre-filled tax rates and local figures:

Mortgage calculator

Auto loan calculator

Property tax calculator

By metro & loan amount

Guides & learning

Plain-language explainers, head-to-head comparisons, and a glossary: