Math, finance, health, fitness, conversions & more. Free forever.
Calculate exact age in years, months, days, hours, minutes from date of birth.
Calculate percentages, increases, decreases and differences between numbers.
Calculate GPA from courses, grades and credit hours on a 4.0 scale.
Add, subtract, multiply and divide fractions with simplified results.
Find square root, cube root, square and cube of any number.
Solve ax² + bx + c = 0 with discriminant and roots.
Calculate mean, variance, standard deviation from data.
Calculate mean, median, mode and range from numbers.
Generate random numbers in any custom range.
Simplify ratios and find proportions between numbers.
Check if a number is prime and find nearby primes.
Convert between binary, decimal, octal and hexadecimal.
Convert numbers to Roman numerals (1-3999).
Find Least Common Multiple and Greatest Common Divisor.
Calculate nPr and nCr values.
Generate Fibonacci sequence up to N terms.
Find remainder of division between two numbers.
Solve A/B = C/X for the unknown value.
Calculate compound interest with various compounding frequencies.
Calculate monthly EMI, total interest and payment for any loan.
Calculate monthly mortgage payment with down payment.
Convert between hourly, daily, weekly, monthly and yearly salary.
Estimate income tax from income and tax rate.
Calculate sale price after discount.
Calculate tip and split bill among people.
Calculate Return on Investment.
How long to reach your savings goal.
See how inflation affects purchasing power.
Calculate profit margin and markup.
Calculate simple interest.
Find break-even point for business.
Estimate retirement savings.
Calculate selling price from cost and markup.
Convert between major world currencies.
Calculate Body Mass Index and health category.
Estimate daily calorie needs (TDEE) based on your stats.
Estimate body fat % using Navy method.
Calculate estimated due date from last period.
How much water you should drink daily.
Find ideal weight using multiple formulas.
Calculate daily protein, carbs, fat needs.
Find ideal bedtime for complete sleep cycles.
Calculate target heart rate zones for exercise.
Daily protein needs based on weight and activity.
Estimate Blood Alcohol Content.
Calculate Basal Metabolic Rate.
Estimate ovulation and fertile window.
Calories burned while walking.
Calculate pace, speed, and race predictions.
Estimate your 1RM from weight and reps.
Convert steps to calories burned.
Estimate VO2 max from 12-minute run.
Calculate maximum heart rate by age.
Calculate swim pace and split times.
Convert meters, km, feet, inches, miles.
Convert kg, g, lb, oz, stone.
Convert liters, ml, gallons, cups, oz.
Convert bytes, KB, MB, GB, TB.
Convert km/h, mph, m/s, knots.
Convert sq meters, sq feet, acres, hectares.
Convert Pa, kPa, bar, atm, PSI.
Convert joules, calories, kWh, BTU.
Convert cups, tbsp, tsp, ml for recipes.
Convert Celsius, Fahrenheit, Kelvin.
Convert US, UK, EU shoe sizes.
Calculate speed, distance or time from two values.
Convert degrees, radians, gradians.
Find days, weeks, months between two dates.
Days until a specific date.
Count working days excluding weekends.
Convert Unix timestamp to date.
Add or subtract days from a date.
Find week number of any date.
Calculate fuel cost for any trip.
Calculate power consumption cost.
Which pizza gives better value for money.
How much paint for walls.
Calculate concrete volume needed.
How many tiles needed for floor or wall.
Calculate flooring area and cost.
Calculate gravel or mulch volume.
Check password strength and security.
Convert dog years to human years.
Calculate area of rectangle, circle, triangle.
Calculate voltage, current, resistance, power.
Calculate pH from H⁺ concentration.
Calculate density from mass and volume.
Calculate force from mass and acceleration.
Calculate wavelength from frequency.
Convert between moles, grams and particles.
Calculate radioactive decay.
Convert light-years, AU, parsecs.
Calculate feels-like temperature from heat and humidity.
Perform arithmetic on very large numbers.
Estimate roofing materials and cost.
Compare tire sizes and calculate dimensions.
Calculate grain bin capacity in bushels.
Powers, roots, log, trig, factorial
Check love compatibility between names
Systematic Investment Plan returns
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BMI Calculator, Calorie Calculator, Body Fat Calculator, Pregnancy Due Date Calculator, Water Intake Calculator, Ideal Weight Calculator, Macro Calculator, Sleep Calculator, Heart Rate Zone Calculator, Protein Calculator, BAC Calculator, BMR Calculator, Ovulation Calculator, Walking Calorie Calculator.
Running Pace Calculator, One Rep Max Calculator, Steps to Calories, VO2 Max Estimator, Max Heart Rate Calculator, Swim Pace Calculator.
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Ohm's Law Calculator, pH Calculator, Density Calculator, Force Calculator (F=ma), Wavelength Calculator, Moles Calculator, Half-Life Calculator, Speed of Light Calculator, Heat Index Calculator.