Simple Number Tools

Finance & Money

Money calculators in one place: loan and EMI payments, simple and compound interest, APY, plus discounts, tax, tips, unit price, and profit margin.

This hub collects the money tools: borrowing and repayment, interest and savings growth, and the everyday calculations behind shopping and small business.

Use the loan and EMI calculators for repayments, the interest and APY calculators for savings, and the discount, tax, tip, unit price, and profit margin calculators for day-to-day money. Figures are estimates — check important decisions independently.

Calculators Loan Calculator Estimate a monthly loan payment, total paid, and total interest using loan amount, rate, and term. Calculators EMI Calculator Estimate an equated monthly installment using principal, annual interest rate, and loan tenure in months. Calculators Simple Interest Calculator Calculate simple interest and total amount using principal, rate, and time. Calculators Compound Interest Calculator Estimate compound interest and final amount with different compounding frequencies. Calculators APY Calculator Find the annual percentage yield (APY) from a nominal rate and compounding frequency. Shows the formula and yearly earnings. Calculators Discount Calculator Find the sale price and how much you save, add sales tax, or stack two discounts, all from the original price and percent off. Calculators Sales Tax Calculator Add sales tax to a price or remove it from a total. Shows the tax amount and the steps. Calculators Tip Calculator Work out the tip and total for any bill, and split it between people. Shows the steps. Calculators Unit Price Calculator Compare two items by price per unit to see which is the better value. Shows the steps. Calculators Profit Margin Calculator Find profit, profit margin, and markup from a cost and selling price. Shows the formulas and steps. Calculators Percentage Calculator Calculate percentages, find what percent one number is of another, or work backward from a percentage.

Frequently asked questions

What is the difference between simple and compound interest?

Simple interest is charged only on the original amount; compound interest is charged on the amount plus accumulated interest. Each has its own calculator here.

What does APY mean?

APY (annual percentage yield) is the real yearly return once compounding is included. The APY calculator turns a nominal rate and compounding frequency into the APY.

Are these financial calculators exact?

The math is exact for the numbers you enter, but real loans and accounts include fees and changing rates, so treat the results as estimates.