QuickMath.ai
Free Online Math Calculators
Fast, free math calculators that run in your browser. No uploads, 100% private.
Basic Calculators
7 calculators
Math Calculators
15 calculators
Geometry Calculators
10 calculators
Statistics Calculators
11 calculators
Financial Calculators
81 calculators
Health Calculators
48 calculators
Time Calculators
15 calculators
Education Calculators
15 calculators
Science Calculators
35 calculators
Everyday Calculators
32 calculators
Specialized Calculators
12 calculators
Fun Calculators
4 calculators
Basic Calculators
Essential Math Tools for Everyday Use
Percentage Calculator
Free percentage calculator. Calculate percentage of total, percentage change, percentage increase/decrease, and more.
Discount Calculator
Calculate discounts, sale prices, and savings instantly. Find final prices after percentage off, compare multiple discounts, and see how much you save.
Tip Calculator
Calculate tips easily and split bills among friends. Choose tip percentage based on country customs, see total with tip, and divide evenly with our free tip calculator.
Random Number Generator
Generate random numbers with custom range. Support for decimals, unique numbers, and batch generation. Free online random number generator.
Number Base Converter
Convert numbers between binary, decimal, hexadecimal, and octal. Easy number base conversion. Free online number converter.
Unit Converter
Convert between different units of measurement. Length, weight, temperature, volume, and more. Free online unit converter.
Math Calculators
Advanced Mathematical Operations
Fraction Calculator
Free online fraction calculator. Add, subtract, multiply, and divide fractions. Get simplified results, decimals, and mixed numbers instantly.
GCD & LCM Calculator
Calculate GCD (Greatest Common Divisor) and LCM (Least Common Multiple) of two or more numbers. Shows prime factorization and step-by-step solutions.
Prime Number Checker
Check if any number is prime. Find all factors, prime factorization, and nearest prime numbers. Free online prime number calculator.
Factorial Calculator
Calculate factorials (n!), permutations P(n,r), and combinations C(n,r). Free online factorial calculator with step-by-step formulas.
Square Root Calculator
Calculate square roots, cube roots, and nth roots of any number. Get simplified radical form and decimal results. Free online root calculator.
Exponent Calculator
Calculate exponents and powers easily. Compute x raised to the power of n with scientific notation, expanded form, and negative exponents.
Geometry Calculators
Shapes, Areas & Volumes
Area Calculator
Free area calculator. Calculate area of squares, rectangles, circles, triangles, and shapes.
Perimeter Calculator
Calculate perimeter and circumference of rectangles, squares, triangles, circles, polygons, and more. Free online perimeter calculator.
Volume Calculator
Free volume calculator. Calculate volume of cubes, cylinders, spheres, cones, pyramids.
Pythagorean Theorem Calculator
Calculate hypotenuse or legs of a right triangle using the Pythagorean theorem. Find Pythagorean triples. Free online calculator.
Triangle Calculator
Calculate all triangle properties: sides, angles, area, perimeter, heights. Solve using SSS, SAS, ASA, or AAS. Free online triangle calculator.
Circle Calculator
Calculate circle properties: radius, diameter, circumference, area, arc length, sector area, and chord length. Free online circle calculator.
Statistics Calculators
Data Analysis & Probability
Average Calculator
Calculate mean, median, mode, range, sum, and more. Free online average calculator for statistics and data analysis.
Standard Deviation Calculator
Calculate standard deviation, variance, mean, and other statistics for sample and population data. Free online standard deviation calculator.
Variance Calculator
Calculate variance for sample and population data with step-by-step breakdown. See standard deviation, mean, and sum of squared deviations.
Percentile Calculator
Calculate percentiles, quartiles, deciles, and percentile ranks for your data. Find Q1, Q2, Q3, IQR and more. Free online percentile calculator.
Z-Score Calculator
Calculate z-scores from raw scores, find raw scores from z-scores, and convert between z-scores and percentiles. Free online z-score calculator.
Probability Calculator
Calculate probability for single events, multiple events, conditional probability, combinations (nCr), and permutations (nPr). Free probability calculator.
Financial Calculators
Plan Your Finances with Precision
Loan Calculator
Free loan calculator. Calculate monthly payment, total interest, and see amortization schedule for any loan.
Mortgage Calculator
Calculate your monthly mortgage payment, total interest, and view amortization schedule. Free mortgage calculator with down payment and PMI options.
Investment Calculator
Calculate investment returns, compound interest, and future value. Plan your investments with our free ROI and growth calculator.
Compound Interest Calculator
Calculate compound interest on your investments. See how your money grows over time with our interactive compound interest calculator and growth chart.
Salary Calculator
Calculate your salary conversions between hourly, monthly, and annual. Estimate net pay after taxes with our free salary calculator.
Break-Even Calculator
Calculate your business break-even point. Find how many units you need to sell to cover costs with our free break-even analysis calculator.
Health Calculators
Track Your Health & Wellness
BMI Calculator
Free BMI calculator. Calculate your Body Mass Index and get health recommendations.
Calorie Calculator
Free calorie calculator for BMR, TDEE, and personalized daily calorie goals.
Age Calculator
Free age calculator. Calculate your exact age in years, months, days, hours and minutes from your birth date.
Date Calculator
Calculate date differences, add or subtract days from dates, and find days between two dates. Perfect for planning deadlines, events, and countdowns.
Body Fat Calculator
Free body fat percentage calculator. Calculate body fat using US Navy method or BMI estimation. Get fat mass, lean mass, and body composition analysis.
Ideal Weight Calculator
Free ideal weight calculator. Calculate ideal body weight using Robinson, Miller, Devine, and Hamwi formulas. Compare with healthy BMI weight range.
Time Calculators
Date & Time Calculations
Timezone Converter
Free online timezone converter. Convert time between cities like New York, London, Tokyo, Sydney and more. Supports UTC offsets and DST.
Time Duration Calculator
Free time duration calculator. Calculate hours, minutes, seconds between times. Add or subtract time intervals easily.
Work Hours Calculator
Free work hours calculator. Track daily working hours with breaks. Calculate weekly totals for payroll and time management.
Overtime Calculator
Free overtime calculator. Calculate overtime pay with 1.5x and 2x rates. Track regular and overtime hours for accurate payroll.
Days Until Calculator
Free days until calculator. Count days remaining to holidays, birthdays, vacations, and deadlines. Easy date countdown tool.
Business Days Calculator
Free business days calculator. Count working days between dates or add business days. Exclude weekends and holidays easily.
Education Calculators
Academic & Learning Tools
GPA Calculator
Free GPA calculator. Calculate your college or high school GPA from letter grades and credit hours. Standard 4.0 scale.
Grade Calculator
Free grade calculator. Calculate your overall course grade from assignments with optional weighting. Get letter grade conversion.
Final Grade Calculator
Free final grade calculator. Find out what score you need on your final exam to reach your target grade. Plan your study time.
Test Score Calculator
Free test score calculator. Calculate percentage and letter grade from correct answers. Set custom passing grade threshold.
Weighted Average Calculator
Free weighted average calculator. Calculate weighted mean with custom weights. See difference from simple average and contribution breakdown.
CGPA Calculator
Free CGPA calculator. Calculate cumulative GPA from multiple semesters. Track academic progress and GPA trend.
Science Calculators
Physics, Chemistry & More
Speed Calculator
Free speed calculator. Calculate average speed, velocity, and distance traveled.
Force Calculator
Free force calculator. Calculate force using F=ma formula.
Energy Calculator
Free energy calculator. Calculate kinetic and potential energy.
Statistical Power Calculator
Calculate statistical power.
Momentum Calculator
Free momentum calculator. Calculate linear momentum of objects.
Acceleration Calculator
Free acceleration calculator. Calculate rate of acceleration from velocity.
Everyday Calculators
Practical Daily Calculations
Recipe Scaler
Free recipe scaler calculator. Adjust ingredient quantities for any serving size. Perfect for cooking and baking.
Cooking Conversion Calculator
Free cooking conversion calculator. Convert cups to tablespoons, ounces to grams, Fahrenheit to Celsius and more.
Baking Calculator
Free baking calculator. Calculate hydration, convert pan sizes, substitute yeast types. Perfect for bread baking.
Serving Size Calculator
Free serving size calculator. Calculate servings per package, portion sizes, and total nutrition information.
Food Cost Calculator
Free food cost calculator. Calculate ingredient costs, cost per serving, and food cost percentage for recipes.
Paint Calculator
Free paint calculator. Calculate gallons needed for walls, accounting for doors, windows, and coats.
Specialized Calculators
Industry-Specific Tools
Depth of Field Calculator
Free depth of field calculator for photographers. Calculate DOF, hyperfocal distance, and near/far limits for any camera and lens.
Exposure Calculator
Free photography exposure calculator. Calculate equivalent exposures, ND filter compensation, and EV values for any camera.
Print Size Calculator
Free print size calculator for photographers. Calculate maximum print size at various DPI and check print quality.
BPM Calculator
Free BPM calculator with tap tempo feature. Convert BPM to milliseconds, calculate delay times for music production, and find note values for any tempo.
Tempo Calculator
Free tempo calculator for musicians. Calculate song length at different tempos, find practice tempos, and understand tempo markings from Largo to Prestissimo.
Key Transpose Calculator
Free key transpose calculator for musicians. Transpose songs between keys, find capo positions, calculate semitone intervals, and convert chord progressions.
Fun Calculators
Entertainment & Viral Calculators
Dog Age Calculator
Convert your dog's age to human years using the latest science-based formula. Accurate dog age calculator based on breed size and DNA research.
Cat Age Calculator
Convert your cat's age to human years accurately. Calculate cat age based on veterinary guidelines and discover your cat's life stage.
Love Calculator
Fun love compatibility calculator! Enter two names to calculate your love match percentage. Discover how compatible you are with your crush or partner.
Numerology Calculator
Calculate your numerology life path number and expression number. Discover your personality traits and life purpose through numerology.