Everyday, Health & School Calculators
Quick answers for the calculations that come up in daily life: splitting a restaurant bill, working out a percentage discount, checking your BMI, finding your exact age or projecting your GPA before finals.
Health calculators like BMI give general guidance only and are not a substitute for advice from a medical professional.
Everyday & Health tools
Age Calculator
Free online age calculator to find your exact age in years, months, days, hours & minutes from your date of birth.
Percentage Calculator
Free percentage calculator to find percentages, calculate percent change, increase or decrease any value by percentage.
BMI Calculator
Free BMI calculator to check your Body Mass Index. Calculate BMI using height and weight in metric or imperial units.
GPA Calculator
Free GPA calculator on a 4.0 scale. Add courses with letter grades and credit hours to get your semester GPA, then combine it with your cumulative GPA.
Grade Calculator
Free grade calculator that turns assignment and exam scores into your overall grade. Use weighted categories to see your final percentage and letter grade.
Tip Calculator
Free tip calculator for restaurants and services. Pick 10 to 25% or a custom tip, split the bill between any number of people, and see each share.
Sleep Calculator
Free sleep calculator that uses 90-minute sleep cycles to find the best time to go to bed or wake up, so you wake refreshed instead of groggy.
Shoe Size Converter
Convert shoe sizes between US, UK, EU, and centimeters for men, women, and kids. Free shoe size chart and converter for buying shoes online from any brand.
Golf Handicap Calculator
Free golf handicap calculator. Enter up to 20 scores with course and slope ratings to get your score differentials and estimated Handicap Index.
Dice Roller
Free online dice roller for board games and RPGs. Roll D4, D6, D8, D10, D12, D20, D100 with animation and history.
Love Calculator
Free love calculator just for fun. Enter your name and your crush's name to get a compatibility percentage with an animated heart. Same names, same result.