About OnSumo Tools
OnSumo Tools is a growing collection of interactive calculators and utilities designed for people who want answers without friction: clear inputs, instant results, and explanations that respect your time.
Privacy-first by design
Where we say a tool runs in your browser, your numbers stay on your device. We do not run your inputs through our servers for calculation unless a specific tool explicitly says otherwise. That keeps latency low and reduces risk for sensitive figures like loans, taxes, or savings scenarios.
Educational use
Outputs are for informational and educational purposes. Rules, rates, and fees change by jurisdiction and lender, always confirm material decisions with a qualified professional.