Standard Calculator
🧮 full arithmetic with keyboard support
0
Percentage Calculator
% · find percentage, increase/decrease, original value
Fraction Calculator
½ · add, subtract, multiply, divide fractions & simplify
Ratio Calculator
∶ · simplify ratios, find missing value, scale ratios
Quadratic Equation
ax² + bx + c = 0 · real & complex roots with steps
Linear System Solver
2×2 system: a₁x + b₁y = c₁ and a₂x + b₂y = c₂
Exponents & Logarithms
xⁿ · powers, roots, log, ln, log base
Linear Inequality
ax + b ≤/≥/
Area & Perimeter
▭ · rectangle, triangle, circle, trapezoid, parallelogram
Volume Calculator
⬛ · cube, sphere, cylinder, cone, pyramid
Pythagorean Theorem
△ · a² + b² = c² · leave one field empty to solve for it
Circle Calculator
○ · radius, diameter, circumference, area — enter any one
Trigonometry Calculator
∿ · sin, cos, tan, csc, sec, cot and inverses
Angle Converter
° ↔ rad ↔ grad · also converts arc length & sector area
Descriptive Statistics
σ · mean, median, mode, range, variance — enter comma-separated numbers
Standard Deviation & Variance
± · population and sample standard deviation
Probability Calculator
🎲 · basic probability, union, intersection, complement
Simple Interest
💰 · I = P × r × t · find interest, principal, rate, or time
Compound Interest
📈 · A = P(1 + r/n)^(nt) · future value with compounding
Loan / EMI Calculator
🏦 · monthly payment, total interest, amortization summary
Prime Number Checker
𝕡 · check primality, factorize, list primes in range
GCD & LCM
÷ · greatest common divisor and least common multiple
Factorial & Combinatorics
! · n!, nCr (combinations), nPr (permutations)
Derivative Reference
∂ · power rule, basic derivative rules & chain rule guide
Sequences & Series
∑ · arithmetic and geometric sequences, nth term, sum