Finance tools
Finance calculators and tools
Clear calculators for savings, borrowing, income, and everyday money decisions.
All tools
6 tools available now, with more on the way.
Compound InterestSee how regular contributions can grow over time.→Simple InterestCalculate interest on a principal amount.→Loan CalculatorEstimate payments and the total cost of a loan.→Mortgage CalculatorPlan a home loan with monthly payment estimates.→Rent vs BuyCompare two common housing choices.→Discount CalculatorFind sale prices and money saved.→
Latest guides
Straightforward explanations to help you use each tool well.
Finance · July 10, 2026
How compound interest builds over time
A practical guide to contributions, rates, and time.
Read guide →Health · July 8, 2026Understanding BMI and its limits
What this screening measure can and cannot tell you.
Read guide →Developer · July 4, 2026How to format JSON safely
A quick workflow for valid and readable JSON.
Read guide →Frequently asked questions
A few quick answers before you go.
How do I use these finance tools?
Choose a tool, enter the values you know, and review the result and assumptions before making a decision.
Are these results professional advice?
No. These tools are educational references. Use them alongside information from a qualified professional when appropriate.