💰 Finance
Loan, interest, tax, and investment calculators.
Finance calculators answer money questions directly: what a loan costs each month, what savings earn over time, what a discount really changes. Every tool states its formula so you can verify the number against the paperwork.
- Simple Interest CalculatorI = P × r × t ÷ 100
- Compound Interest CalculatorA = P × (1 + r/100)^t, compounded annually
- Loan Payment CalculatorMonthly EMI for a fixed-rate loan
- Discount CalculatorFinal price after a percentage discount
- Profit Margin CalculatorMargin % from revenue and cost
Frequently asked questions
What is the difference between simple and compound interest?
Simple interest pays only on the original principal; compound interest pays on the running total including past interest. At 5 percent for 2 years on 1,000, the simple path earns 100 while compounding earns about 102.50 — a small gap that widens every year.
Which finance calculator should I start with?
Match the tool to the money moment: loan payment for a monthly figure, simple or compound interest for savings over time, profit margin or discount inside a business question. Open the calculator whose name is the question you are about to ask.
How are margins, discounts and interest connected?
All three are percentages applied to a base: margin divides profit by revenue, discount cuts a list price, and interest grows a principal. Learning which base each one uses — revenue, price, principal — explains most day-to-day finance math in a single move.