Calculator hub
Pick a category, enter the numbers, and see the answer fast.
Free online calculators for money, health, dates, units, and home projects. Enter the values you know and compare results, charts, and schedules right away.
Popular calculators
Core calculators worth using in the first version.
Age Calculator
Use this age calculator to calculate age from a date of birth, check how old you are today, or find your age on a specific date.
Use calculatorBMI Calculator
Use this BMI calculator to calculate body mass index from height in cm and weight in kg, then compare the result with a general adult BMI chart.
Use calculatorCalorie Calculator
Use this calorie calculator to estimate daily calories for maintenance, a calorie deficit for weight loss, or a mild calorie surplus for weight gain.
Use calculatorGPA Calculator
Calculate grade point average from course credits and letter grades, then estimate the GPA needed in future credits to reach a target.
Use calculatorGrade Calculator
Calculate a weighted course grade from assignments, exams, and projects, including the score needed on remaining work.
Use calculatorLoan Calculator
Calculate monthly loan payments, total interest, and total repayment from loan amount, rate, and a term entered in years or months.
Use calculator