Free Online Calculators for Everyday Use
Fast, accurate calculators for finance, health, math, construction, and everyday tasks - all in your browser, no signup needed.
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Financial Calculators
Loans, mortgages, tips, discounts, profit margins, and more.
32 calculatorsMath Calculators
Percentages, averages, roots, and statistics.
35 calculatorsEducation Calculators
GPA, CGPA, grades, and academic planning tools.
2 calculatorsHealth Calculators
BMI, alcohol detection, and other wellness metrics.
8 calculatorsConstruction Calculators
Asphalt, sand, bitumen, and roofing calculators.
11 calculatorsAutomotive & Travel Calculators
Fuel costs, trip planning, and aviation tools.
9 calculatorsTime & Date Calculators
Age, half-birthday, and date-based calculators.
5 calculatorsPopular calculators
Discount CalculatorCalculate the final price and exact savings after applying any discount percentage.
Tip CalculatorCalculate the tip amount and total bill, then split evenly across any number of people.
Loan CalculatorCalculate your monthly loan payment, total interest paid, and full loan cost in seconds.
Mortgage CalculatorEstimate your monthly mortgage payment including principal, interest, and total repayment cost.
Profit Margin CalculatorCalculate gross profit, profit margin percentage, and markup from revenue and cost figures.
Percentage CalculatorCalculate any percentage instantly — percentage of a number, percentage change, or what percent one number is of another.
Average CalculatorCalculate mean, median, mode, sum, range, min, and max from any list of numbers.
Simple CalculatorUse a clean simple calculator for everyday arithmetic, decimals, percentages, and quick expression checking.
Scientific CalculatorUse a safe scientific calculator for arithmetic, exponents, roots, logarithms, trig functions, factorials, and grouped expressions.
Linear Equation CalculatorSolve ax + b = c or equations with x on both sides with clear algebra steps, special case handling, and beginner-friendly explanations.
Solve ax^2 + bx + c CalculatorSolve ax^2 + bx + c = 0 with the discriminant, root classification, formula substitution, and a complete step-by-step walkthrough.
Discriminant CalculatorCalculate D = b^2 - 4ac, classify the roots, and follow a clear step-by-step discriminant breakdown for any quadratic equation.
Triangle CalculatorSolve SSS, SAS, ASA, AAS, and SSA triangles with missing sides, angles, area, perimeter, and step-by-step working.
Circle CalculatorSolve radius, diameter, circumference, and area from one known circle value with formulas and step-by-step working.
Slope CalculatorFind slope from two points with exact fraction, decimal result, rise, run, and line equation outputs.
Distance Formula CalculatorFind the distance between two points with exact radical form when possible, decimal approximation, and step-by-step working.
Midpoint CalculatorFind the midpoint between two points or solve a missing endpoint from one endpoint and the midpoint.
Right Triangle CalculatorSolve right triangles from two sides or from one side and one angle, with all sides, angles, area, perimeter, and steps.
Pythagorean Theorem CalculatorFind the hypotenuse or a missing leg of a right triangle with formulas, validation, examples, and step-by-step working.
Triangle Angles CalculatorFind missing triangle angles with the triangle sum rule, exterior angle theorem, and isosceles triangle angle formulas, with steps and examples.
Special Right Triangle CalculatorSolve 30-60-90 and 45-45-90 triangles from one known side with ratio explanations, formulas, examples, and step-by-step working.
GPA CalculatorCalculate semester, overall, weighted, or unweighted GPA with a clean 4.0-scale interface, useful breakdowns, and practical academic guidance.
BMI CalculatorCalculate your Body Mass Index (BMI) in metric or imperial units and find your weight category.
Calorie CalculatorCalculate your daily calorie needs using the Mifflin-St Jeor formula. Get your BMR, TDEE, and calorie targets for weight loss or gain.
Fuel Cost CalculatorEstimate trip fuel usage and total cost using MPG or L/100km with your local fuel price.
Age CalculatorCalculate your exact age in years, months, and days — plus a live countdown to your next birthday.
Date Difference CalculatorFind the exact difference between two dates in years, months, and days — with total days, total weeks, and step-by-step working.
Days Between Dates CalculatorCount the exact number of days between any two dates — with total weeks, decimal weeks, and a calendar breakdown.
100+ Free Calculators in One Place
Express Calculator is a collection of fast, free browser-based calculators covering financial planning, health metrics, math operations, construction estimations, and automotive travel. Every calculator runs entirely in your browser - no account, no download, and no data sent to any server.
Popular tools include the age calculator, BMI calculator, loan calculator, mortgage calculator, and percentage calculator.