Math & Science Calculators
General purpose math calculators for percentages, fractions, statistics, and more.
19 free tools available - no signup required
Essential math and science calculators for students, educators, and professionals. Solve percentages, fractions, square roots, logarithms, and quadratic equations instantly. Our statistics tools calculate mean, median, mode, probability, and standard deviation. GPA and grade calculators help students track academic performance across semesters.
Age Calculator
Free online Age Calculator -- find your exact age in years, months, days, weeks, and total days from your date of birth. Includes next birthday countdown and milestone tracking.
Basic Calculator
Free online Basic Calculator -- perform addition, subtraction, multiplication, division, exponents, and modulo operations. Instant results with up to 10 decimal places of precision.
Binary Hex Decimal Converter
Free online Binary, Hexadecimal, and Decimal Converter -- convert between base-2, base-10, and base-16 number systems instantly. Essential for programming, computer science, and digital electronics.
Date Calculator
Free online Date Calculator -- find the exact number of days, weeks, months, and years between any two dates. Calculate date differences for project planning, contracts, age verification, and event countdowns.
Fraction Calculator
Free online Fraction Calculator -- add, subtract, multiply, and divide fractions with automatic simplification. Shows results as fractions and decimals. Supports mixed numbers and improper fractions.
Fuel Consumption Converter
Free Fuel Consumption Converter -- convert between MPG (US), MPG (UK), L/100km, and km/L. Compare fuel economy ratings across US, UK, and metric systems for any vehicle.
GPA Calculator
Free online GPA Calculator -- compute your grade point average from letter grades and credit hours. Supports weighted and unweighted GPA on a 4.0 scale with instant results.
Grade Calculator
Free online Grade Calculator -- compute your weighted course grade from assignments, exams, and projects. Find out what score you need on your final exam to reach your target grade.
Logarithm Calculator
Free online Logarithm Calculator -- compute common log (base 10), natural log (ln), and logarithms of any base. Includes log rules, formulas, and real-world applications.
Matrix Calculator
Free online Matrix Calculator -- perform matrix addition, subtraction, multiplication, transposition, and find determinants and inverses. Supports 2x2 and 3x3 matrices with step-by-step results.
Mean Median Mode Calculator
Free online Mean, Median, and Mode Calculator -- enter a data set to instantly compute all three measures of central tendency plus range and count. Includes explanations of when to use each measure.
Percentage Calculator
Free online Percentage Calculator -- find a percentage of a number, calculate percentage increase or decrease, compute percentage change, and determine percentage difference. Instant results with formulas and examples.
Probability Calculator
Free online Probability Calculator -- compute single event probability, combined probability for independent and dependent events, and complementary probability. Includes formulas and practical examples.
Quadratic Formula Calculator
Free online Quadratic Formula Calculator -- solve ax^2 + bx + c = 0 for both roots. Shows the discriminant, vertex, and whether solutions are real or complex. Step-by-step results.
Random Number Generator
Free online Random Number Generator -- generate random integers or decimals within any range. Use for raffles, simulations, sampling, games, and decision-making with uniform distribution.
Ratio Calculator
Free online Ratio Calculator -- simplify ratios, solve proportions, and scale values up or down. Find missing values in proportional relationships with step-by-step results.
Scientific Calculator
Free online Scientific Calculator -- compute trigonometric functions (sin, cos, tan), logarithms (log and ln), exponentials, factorials, and absolute values. Degree-mode trig with instant results.
Square Root Calculator
Free online Square Root Calculator -- find square roots, cube roots, and nth roots of any number. Also computes squares, cubes, and reciprocals. Identifies perfect squares with up to 6 decimal places of precision.
Statistics Calculator
Free online Statistics Calculator -- compute mean, median, mode, range, standard deviation, variance, and sum for any data set. Enter up to 8 numbers for instant descriptive statistics.
Reviewed & Methodology
Every calculator is built using industry-standard formulas, validated against authoritative sources, and reviewed by a credentialed financial professional. All calculations run privately in your browser - no data is stored or shared.