Calculators
Percentage Calculator
Calculate percentages, percentage-of, and percentage change.
BMI Calculator
Calculate Body Mass Index from weight and height.
Loan Calculator
Calculate monthly loan payments, total interest and total paid.
Tip Calculator
Calculate a tip and split the bill between people.
Discount Calculator
Calculate the sale price and amount saved.
Aspect Ratio Calculator
Reduce width and height to a simplified aspect ratio.
GPA Calculator
Calculate a credit-weighted grade point average.
Scientific Calculator
Evaluate math expressions with functions and constants.
Compound Interest Calculator
Project savings growth with compounding and contributions.
Savings Goal Calculator
See how many months to reach a savings target.
VAT Calculator
Add or remove VAT/GST from an amount.
BMR & Calorie Calculator
Estimate BMR and daily calories (TDEE).
Unit Price Comparison
Compare price per unit to find the best value.
Simple Interest Calculator
Calculate simple interest and total amount.
Fuel Cost Calculator
Estimate the fuel cost of a trip.
Average Calculator
Calculate mean, median, mode and range of a set of numbers.
Ratio Calculator
Solve proportions of the form A : B = C : D.
Markup Calculator
Calculate selling price, profit and margin from cost and markup.
Pace Calculator
Calculate running pace, speed and split times.
Rule of Three Calculator
Solve direct and inverse proportions with the rule of three.
Circle Calculator
Calculate radius, diameter, circumference and area.
Area Calculator
Calculate the area of common 2D shapes.
Speed, Distance & Time Calculator
Solve for speed, distance or time.
Electricity Cost Calculator
Estimate the running cost of an appliance.
ROI Calculator
Calculate return on investment and annualized return.
Pythagorean Theorem Calculator
Solve a right triangle with a² + b² = c².
Quadratic Equation Solver
Solve ax² + bx + c = 0 for real and complex roots.
Standard Deviation Calculator
Calculate standard deviation and variance.
GCD & LCM Calculator
Find the greatest common divisor and least common multiple.
Prime Number Checker
Check if a number is prime and factorize it.
Percentage Change Calculator
Find the percentage increase or decrease between two numbers, plus the absolute difference, instantly in your browser.
Fraction Calculator
Add, subtract, multiply, or divide two fractions and get the result reduced to lowest terms with its decimal value.
Paint Calculator
Calculate how many litres of paint you need for a room based on wall dimensions, coats, and coverage rate.
Tile Calculator
Work out how many tiles and boxes you need for a room, including a waste allowance percentage.
Final Grade Calculator
Find out what score you need on your final exam to reach your target overall grade.
Proportion Solver
Solve a/b = c/d style proportions instantly by choosing which value to solve for.