Finance calculators
Loans and interest: monthly payment, overpayment and the total cost of money over time, without banking jargon.
1 tool in this section
How to choose a tool
The mortgage calculator answers two questions: how much to pay each month and how much the bank earns on top. Rate, term and amount are the three levers — the overpayment grows faster than it looks.
Every calculation runs in your browser: the page never sends the numbers you type to a server and keeps no history. If a result raises questions, each tool page ends with short answers about allowances and limitations.