Free Online Calculators

Advanced calculator with trigonometric, logarithmic, and mathematical functions

Calculate percentages, percentage of a number, and percentage change

Calculate your Body Mass Index with metric or imperial units

Calculate monthly payments, total interest, and amortization for any loan

Calculate mortgage payments with down payment, taxes, and amortization

Calculate compound interest with contributions, frequency options, and year-by-year growth

Calculate return on investment, annualized ROI, and net profit

Calculate tip amount, total bill, and split between people

Convert between annual salary and hourly rate with tax estimates

Add or remove VAT/sales tax from any amount with common rates

Calculate profit margin, markup, and revenue from cost and price

Calculate sale price, savings, and stacked discounts with tax

Calculate your exact age in years, months, days, weeks, and hours from your date of birth.

Calculate the exact difference between two dates in years, months, days, weeks, hours, and minutes.

Calculate your daily calorie needs (BMR and TDEE) based on age, gender, weight, height, and activity level.

Add, subtract, multiply, and divide fractions. Get simplified results, mixed numbers, and decimal equivalents.

Calculate weighted grade averages, GPA, and letter grades. Add multiple subjects with custom weights.

Calculate your break-even point in units and revenue. Determine how many units you need to sell to cover costs.