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Math Calculators

Free online math calculators for all levels — from basic arithmetic to advanced algebra, statistics, and number theory.

🔬
Scientific Calculator
Trig, log, powers, memory
½
Fraction Calculator
Add, subtract, multiply, divide
%
Percentage Calculator
6 types of % calculations
🎲
Random Number Generator
Lotteries, sets, secure random
△
Triangle Calculator
Solve any triangle
σ
Std Dev Calculator
Stats: mean, median, variance
⚠
Percent Error
Experimental vs theoretical
xⁿ
Exponent Calculator
Powers and roots
01
Binary Calculator
Binary arithmetic & conversion
0x
Hex Calculator
Hex arithmetic & colour codes
⚛
Half-Life Calculator
Radioactive decay
ax²
Quadratic Formula
Solve ax²+bx+c=0
log
Logarithm Calculator
log₁₀, ln, log₂, custom base
∶
Ratio Calculator
Simplify & solve proportions
√
Root Calculator
Square, cube, nth roots
LCM
LCM Calculator
Least Common Multiple
GCF
GCF / GCD Calculator
Greatest Common Factor
∏
Factor Calculator
Prime factorisation
≈
Rounding Calculator
Round to any precision
⊞
Matrix Calculator
2×2 to 4×4 matrix ops
×10ⁿ
Scientific Notation
Convert & calculate
∞
Big Number Calculator
Arbitrary precision integers

About These Math Calculators

All calculators on MegaCalcOnline.com are free to use and work directly in your browser with no downloads or sign-up required. They are designed to provide step-by-step solutions to help you understand the mathematics, not just the answer.

Australian Curriculum Alignment

These calculators are aligned with the Australian Curriculum: Mathematics (AC:M) from the Australian Curriculum, Assessment and Reporting Authority (ACARA). They cover content from Years 7–12 and beyond, including number, algebra, measurement, statistics, and probability.