Scientific Calculator
A full scientific calculator supporting trig functions, logarithms, exponents, and more.
About the Scientific Calculator
This scientific calculator evaluates full mathematical expressions in one step, supporting parentheses, exponents, and functions like sine, cosine, tangent, square root, logarithm, and natural log — the same operations found on a physical scientific calculator, typed as a single expression.
How It Works
The calculator parses your expression respecting standard order of operations — parentheses first, then exponents, then multiplication and division, then addition and subtraction — and evaluates recognized function names like sin(), cos(), sqrt(), and log() using your chosen angle unit for trigonometric functions.
Standard order of operations (PEMDAS) with support for +, −, ×, ÷, ^, and functions: sin, cos, tan, asin, acos, atan, sqrt, log (base 10), ln (natural log), abs, exp.
Worked example
Scenario: Evaluating sin(30) + sqrt(16) × 2 in degree mode.
- Functions first: sin(30°) = 0.5 and sqrt(16) = 4.
- Multiplication before addition: 4 × 2 = 8.
- Add: 0.5 + 8 = 8.5.
Result: 8.5.
Using scientific functions correctly
Scientific calculations depend on operation order and, for trigonometry, the selected angle unit. Degrees and radians are not interchangeable: sin(90°) = 1, while sin(90 radians) is a different value. Use parentheses to make grouped operations explicit, especially with powers, roots, logarithms, and fractions.
Tips and common mistakes
- Check the angle unit: sin(30) is 0.5 in degrees but −0.988 in radians.
- Use ^ for powers, e.g. 2^10, and e-notation for large or small numbers, e.g. 6.02e23.
- Write multiplication explicitly — 2*pi, not 2pi.
- Available functions: sin, cos, tan, asin, acos, atan, sqrt, log (base 10), ln, abs, exp, plus pi and e.
Assumptions & Limitations
- Angle unit (degrees or radians) applies to all trigonometric functions in the expression uniformly.
- log() refers to base-10 logarithm and ln() to natural logarithm, matching standard calculator conventions.
- Does not support variables, multi-line expressions, or statistical functions — for those, use the dedicated Average or Standard Deviation calculators.
- Invalid syntax (like unmatched parentheses) will return an error rather than a partial result.