Calculator
Free online calculators for everyday needs โ BMI, age, tip, percentage, grade, aspect ratio, and more. Quick, accurate, and no signup required.
12 free tools
BMI Calculator
Calculate Body Mass Index with metric/imperial units and health categories.
Age Calculator
Calculate exact age in years, months, days. See total days lived and next birthday.
Discount Calculator
Calculate discount amount, final price, tax, and tip instantly.
Tip Calculator
Calculate tip amount and split the bill. Free online tip calculator.
Grade Calculator
Calculate your weighted course grade with assignments, exams, and their weights.
Random Number Generator
Generate random numbers with customizable range, quantity, and options.
Random Picker
Pick a random number from a range or select a random item from a list.
Scientific Calculator
Scientific calculator with trig functions, logarithms, and more.
Roman Numeral Converter
Convert between Arabic numbers (1-3999) and Roman numerals.
Percentage Calculator
Calculate percentages, increases, decreases, and differences instantly.
Extended Percentage Calculator
Calculate what % of, % increase/decrease, % more/less.
Percentage Change Calculator
Calculate percentage increase or decrease between values
Which tool should you use?
Everyday calculators for health, education, and daily life. Pick the one that matches what you need to figure out right now.
BMI Calculator checks if your weight is healthy for your height.
Age Calculator tells your exact age in years, months, and days. Date Calculator adds or subtracts days from any date โ useful for planning deadlines and events.
Percentage Calculator handles any percentage math. Discount Calculator specifically shows sale prices. Tip Calculator computes the gratuity for restaurant bills.