Calculate what is X% of Y, what percentage a number is of another, and percentage shifts.
Open Calculator →MATH.CHANGECalculate percentage increase, decrease, or difference between two values.
Open Calculator →MATH.DISCOUNTCalculate sale price, total savings, and final price including sales tax.
Open Calculator →MATH.FRACAdd, subtract, multiply, and divide fractions with auto-simplification and decimal conversion.
Open Calculator →MATH.RATIOSimplify ratios, find equivalent ratios, and divide amounts into proportional parts.
Open Calculator →MATH.PROPSolve direct and inverse proportion equations and rule of three (A/B = C/X).
Open Calculator →MATH.AVGCalculate mean average, median, mode, range, standard deviation, and variance.
Open Calculator →MATH.GRADECalculate weighted final grade and required score on final exam to reach target grade.
Open Calculator →FIN.LOANMonthly payment, total interest, total loan cost, and full amortization schedule.
Open Calculator →FIN.MORTGAGEHome mortgage payment calculator with property taxes, insurance, PMI, and country presets.
Open Calculator →FIN.SIMPLE_INTCalculate simple interest (I = P·r·t), final balance, interest rate, or time period.
Open Calculator →FIN.COMPOUNDSimulate investment growth with periodic contributions, compounding frequencies, and year schedule.
Open Calculator →FIN.SALARYConvert gross salary to net take-home pay with taxes and country presets.
Open Calculator →FIN.OVERTIMECalculate overtime pay at 1.5x (time-and-a-half), 2.0x (double time), and holiday rates.
Open Calculator →FIN.MARGINCalculate gross profit margin, net profit margin, COGS, and revenue ratios.
Open Calculator →FIN.MARKUPSet optimal selling price from unit cost and target markup percentage.
Open Calculator →FIN.ROICalculate net ROI percentage and annualized ROI for investments and marketing campaigns.
Open Calculator →FIN.TIPCalculate tip percentage (10%, 15%, 20%...) and split restaurant bill evenly among diners.
Open Calculator →FIN.VATAdd or extract VAT / Sales Tax with presets for Spain, Mexico, Colombia, Argentina, UK, etc.
Open Calculator →FIN.INFLATIONCalculate future purchasing power of money and cumulative loss from inflation rates.
Open Calculator →TIME.AGECalculate exact age in years, months, days, minutes, seconds, and next birthday countdown.
Open Calculator →TIME.DIFFCount total days, working business days (Mon-Fri), weeks, and months between two dates.
Open Calculator →TIME.MATHAdd or subtract days, weeks, months, or years to/from any start date to find future/past dates.
Open Calculator →TIME.HOURSCalculate total hours worked between clock-in and clock-out with unpaid break deductions.
Open Calculator →HEALTH.BMICalculate Body Mass Index (BMI) with metric/imperial units, WHO categories, and ideal weight range.
Open Calculator →HEALTH.CALORIESCalculate Total Daily Energy Expenditure (TDEE) and BMR calories for fat loss, maintenance, or muscle gain.
Open Calculator →HEALTH.PACECalculate pace per km or mile, finish time, and speed for 5K, 10K, Half Marathon, and Marathon.
Open Calculator →UTIL.UNITPRICECompare items of different weights, volumes, or pack sizes to find the best grocery bargain.
Open Calculator →UTIL.FUELCalculate gas trip expense, total liters/gallons consumed, and split costs among passengers.
Open Calculator →The French amortization system keeps monthly payments constant while increasing principal paydown.