Finance

Free online interest rate converter — switch between daily, monthly, and annual rates.

Calculate loan interest based on amount, term and rate

Calculate personal income tax and net salary

Free online compound interest and investment return calculator.

Calculate Internal Rate of Return for investment projects

Free online tool to convert a number into formal Chinese uppercase currency text — for invoices, contracts, receipts, and other financial documents.

Free online lookup table for credit card and Huabei installment fee rates — instantly compare the true effective APR (IRR) for every rate tier, with CSV export.

Calculate real annual rate for credit card installments

Calculate estimated revenue for Yu'e Bao

Calculate Pay Pal fees