Finance, math, health, and everyday calculators — fast, free, and accurate.
Find your exact age in years, months, and days from your date of birth.
OpenCalculate percentages, percentage of a number, or percentage change.
OpenCalculate your Body Mass Index and see which category you fall into.
OpenCalculate monthly EMI for home, car, or personal loans instantly.
OpenConvert length, area, volume, data size, and speed units instantly.
OpenCalculate monthly payments, interest, and total cost for any loan.
OpenCalculate CGST, SGST, IGST for any amount with all Indian GST rates.
OpenEstimate returns on your systematic investment plan with compounding.
OpenSee how your money grows with compound interest over time.
OpenEstimate Indian income tax under Old & New regime with slab breakdown.
OpenFind the final price and savings after applying a discount percentage.
OpenConvert salary between hourly, weekly, monthly, and annual amounts.
OpenQuickly calculate simple interest on principal, rate, and time.
OpenFind your Basal Metabolic Rate and daily calorie needs by activity level.
OpenConvert between 20+ world currencies with approximate exchange rates.
OpenCalculate the exact number of days, weeks, months between two dates.
OpenEstimate fuel cost for a trip based on distance, mileage, and fuel price.
OpenCalculate electricity cost based on wattage, usage hours, and tariff rate.
OpenAdd or subtract hours, minutes, and seconds with ease.
OpenCalculate speed, distance, or time — solve for any missing variable.
OpenConvert between Roman numerals and standard numbers instantly.
Open