Free online scientific calculator with trigonometry, logarithms, exponents, square roots, and advanced mathematical functions for students and professionals.
A scientific calculator performs advanced mathematical operations beyond basic arithmetic, including trigonometry (sin, cos, tan), logarithms (log, ln), exponents and roots, factorials, permutations, combinations, statistical functions, and complex mathematical expressions with parentheses and order of operations. Essential for STEM students solving calculus, physics, chemistry, and engineering problems, professionals performing technical calculations, and anyone needing mathematical functions beyond addition/subtraction/multiplication/division. Supports degree and radian modes for trigonometry, handles very large and very small numbers in scientific notation, and provides memory functions for multi-step calculations.
Solve complex problems instantly that would take minutes manually: calculating compound trigonometric expressions, exponential decay problems, statistical analysis, logarithmic equations. Essential for standardized testing: SAT, ACT, AP exams, GRE allow scientific calculators for math sections. Academic success in STEM courses: physics problems involving vectors and trigonometry, chemistry calculations with logarithms and exponentials, statistics courses requiring probability distributions. Professional applications: engineers calculating structural loads, scientists analyzing experimental data, financial analysts computing complex interest scenarios. Free alternative to physical calculators ($20-150 for TI-84, TI-89, Casio models), always accessible on computer or phone.
Enter mathematical expression using buttons or keyboard: numbers, basic operators (+, -, ×, ÷), parentheses for grouping, and advanced functions from menu. For trigonometry: ensure angle mode matches problem (degrees for 0-360, radians for π-based calculations)—sin(90°) = 1, sin(π/2 radians) = 1. Common functions: x² (square), √x (square root), xʸ (power), log (base-10 logarithm), ln (natural logarithm), eˣ (exponential), n! (factorial). Order of operations automatic: 2+3×4 correctly calculates as 2+(3×4)=14, not (2+3)×4=20. Use memory functions (M+, M-, MR, MC) for multi-step calculations storing intermediate results. For complex calculations: use parentheses liberally to ensure correct evaluation order.
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