← Back to the catalog Performs arbitrary-precision arithmetic calculations including addition, subtraction, multiplication, division, and exponents. Use when the user asks to calculate, compute, or evaluate math expressions, or when precise decimal arithmetic is needed to avoid floating-point errors.
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Calculator
Evaluate arithmetic expressions with arbitrary-precision decimal math using big.js .
When to Use
User asks to calculate or evaluate a math expression
Precise decimal arithmetic is needed (avoids floating-point errors like 0.1 + 0.2 = 0.30000000000000004)
Expressions involve parentheses, operator precedence, or exponents
Supported Operations
Operator Description Precedence +Addition 1 -Subtraction 1 *Multiplication 2 /Division 2 ^Exponent (right-associative) 3 ()Parentheses Highest
Usage
cd scripts
npm ci || npm install
npm run build
npm run calculate "<expression>"
Examples
Input Output "3 + 2"5"10 / 4"2.5"2 ^ 10"1024"(2 + 3) * 4"20"1 + 4.5 * (3-6) / 5"-1.7"-5 + 3"-2"2 ^ 3 ^ 2"512 (right-associative: 2^9)
Edge Cases
Empty expression : Throws "Empty expression" errorMismatched parentheses : Throws "Mismatched parentheses" errorDivision by zero : big.js throws an errorExponent must be integer : big.js .pow() requires integer exponents
Limitations
No trigonometric functions (sin, cos, tan)
No variables or symbolic math
Exponents must be integers
No factorial, modulo, or bitwise operators
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