Math & Education
Math & Statistics Calculators
15 free calculators
Math and education calculators for students and everyday work — percentages and discounts, fractions and ratios, GPA on a 4.0 scale, LCM and GCD with prime factorisation, a full scientific calculator, and a real symbolic derivative solver. Clean answers with the working shown, wherever it helps.
Age
Enter your date of birth to get your exact age in years, months, and days. Also shows total days you've been alive, the day of week you were born, and how many days until your next birthday.
Basic Calculator
A simple, no-frills calculator for everyday arithmetic — addition, subtraction, multiplication, division, and percentages — with a live expression display.
CASIO Scientific
A scientific calculator styled after the familiar CASIO fx layout, with trigonometry, logarithms, powers, roots, factorials and π/e — no software to install.
Derivative Calculator
Symbolically differentiate any function of x — polynomials, trig, exponential and logarithmic expressions — and evaluate the derivative (the slope) at any point.
Discount
Quickly find the sale price after a discount, the savings amount, or the discount percentage. Works for flat discounts, MRP-to-sale comparisons, or finding the original price from the discounted price.
Fraction
Add, subtract, multiply or divide two fractions and get the answer reduced to lowest terms, as a mixed number, and as a decimal — all at once.
GPA
Calculate your Grade Point Average on a 4.0 scale by entering each course's letter grade and credit hours — the credit-weighted average, with an approximate percentage.
LCM & GCD
Calculate the LCM (Least Common Multiple) and GCD (Greatest Common Divisor) of up to 6 numbers instantly, with step-by-step prime factorization.
Number to Words
Spell out any number in words in both the Indian (lakh, crore) and international (million, billion) systems — with an optional “Rupees only” format for cheques.
Percentage
Three percentage calculators in one: find X% of a number, find what percentage one number is of another, or calculate the percentage increase or decrease between two values.
Quadratic Solver
Solve ax² + bx + c = 0 for its roots — real or complex — using the quadratic formula, with the discriminant, axis of symmetry and the parabola’s vertex.
Ratio
Simplify any ratio to its lowest whole-number terms, or solve a proportion (a:b = c:x) for the missing value — with decimal and percentage equivalents.
Roman Numerals
Convert numbers to Roman numerals and back again, in either direction, for values from 1 to 3999 — using correct standard subtractive notation (IV = 4, IX = 9).
Scientific Calculator
A full scientific calculator with trigonometric functions, logarithms, powers, roots, factorials, and the constants π and e — switch between degree and radian angle modes.
Standard Deviation
Paste your numbers and get the standard deviation, variance, mean, median, range and more — with a toggle for sample (n−1) or population (n) calculations.