30+ free online calculators for finance, health, math, and unit conversions. Instantly compute EMIs, mortgage payments, BMI, compound interest, tax, GPA, and more — no sign-up, no ads, fully private.
Browse our complete collection of 35+ free online calculators for finance, health, math, and everyday calculations.
Generate secure, random passwords with customizable length and character options. Perfect for enhancing your online security with strong passwords and passphrases.
Calculate your body fat percentage using the US Navy circumference method and BMI-based formula. Get fat mass, lean mass, and your health category.
Calculate your Basal Metabolic Rate (BMR) to estimate the minimum calories your body needs at rest.
Calculate your age in years, months, days, hours, and minutes with our free online age calculator.
Calculate your BMI (Body Mass Index) instantly with our free online BMI calculator.
Calculate your daily calorie needs, BMR, and TDEE. Get personalized recommendations for weight management.
Calculate how your money grows with compound interest, monthly contributions, and variable compounding frequency.
Calculate sale price, original price before discount, or what percentage off was applied. Three modes for every discount scenario.
Calculate tip amount, total bill, and per-person split for any group size. Includes a tipping guide by service type.
Calculate your retirement savings needs based on current age, retirement age, income, and expenses.
Calculate your investment returns based on initial amount, interest rate, and time period with compound interest.
Calculate your GPA based on grades and credits. Free GPA calculator for high school and college students.
Calculate potential savings by refinancing your mortgage. Compare current loan with new terms.
Calculate your monthly EMI for home, car, or personal loans. Get detailed amortization breakdown.
Find out how much house you can afford based on your income, debt, and down payment.
Calculate your monthly mortgage payments, total interest, and loan details with our free mortgage calculator.
Calculate loan payments, interest rates, and total costs for personal, auto, and student loans.
Convert currencies with real-time exchange rates. Support for all major world currencies.
Calculate your income tax, tax refund, and take-home pay with accurate tax calculations.
Calculate your take-home salary after income tax, provident fund, and health insurance. Supports India new & old tax regime and US federal tax.
Calculate GST amount, total price, and CGST/SGST breakdown for all Indian GST slabs: 3%, 5%, 12%, 18%, 28%. Add or remove GST instantly.
Calculate SIP maturity amount, total returns, and year-by-year growth for any monthly investment. Supports annual step-up SIP.
Calculate your pregnancy due date from LMP, conception date, or IVF transfer. Shows trimesters, current week, days remaining, and key milestones.
Calculate daily macros (protein, carbs, fat) and TDEE for weight loss, maintenance, or muscle gain. Supports keto, low-carb, and custom splits.
Calculate Compound Annual Growth Rate (CAGR), future value, or number of years. Includes Rule of 72 and absolute return comparison.
Calculate simple interest, total amount, or find principal, rate, or time. Supports years, months, and days.
Find out how much home loan, personal loan, or car loan you can get based on your income, existing EMIs, and FOIR method.
Calculate HRA tax exemption under India's old tax regime. Shows all 3 conditions, exempt HRA, taxable HRA, and tax saved at every bracket.
Calculate Fixed Deposit maturity amount and interest earned for any principal, interest rate, tenure, and compounding frequency.
Calculate PPF maturity amount, total interest, and year-wise growth for any annual investment and tenure. Includes 80C tax benefit summary.
Calculate NSC maturity value, year-wise interest, and tax treatment for National Savings Certificate investments.
Calculate your total body water percentage using the Watson formula. Supports metric and imperial, shows normal range and hydration status.
Calculate recommended pregnancy weight gain based on IOM 2009 guidelines and your pre-pregnancy BMI. Shows trimester targets and whether you are on track.
Predict your ovulation date and fertile window for the next 3 cycles based on your last menstrual period and cycle length.
Calculate mean, median, mode, range, standard deviation, sum, min, and max for any set of numbers. Enter comma or space-separated values.
Calculate percentages, percentage increase/decrease, and percentage of numbers easily.
Perform complex mathematical calculations including trigonometry, logarithms, and exponentials.
Convert all types of units — length, weight, temperature, volume, and more.
Convert between meters, feet, inches, centimeters, kilometers, miles, and more.
Convert between kilograms, grams, pounds, ounces, tons, and more.
Convert between Celsius, Fahrenheit, Kelvin, and Rankine temperature scales.
Convert between liters, gallons, cups, milliliters, pints, quarts, and more.
Convert between seconds, minutes, hours, days, weeks, months, and years.
Convert between bytes, kilobytes, megabytes, gigabytes, terabytes, and more.
Calculate date differences, add/subtract days, weeks, months, and years.
Yes! All our calculators are completely free to use with no registration required.
No account needed. All calculators work instantly without any sign-up process.
Our calculators use industry-standard formulas and are regularly tested for accuracy.