Calculators
Scientific, fraction, matrix, geometry, and unit calculators.
Arithmetic & algebra
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3×3 Matrix Inverse Calculator
Compute the inverse of a 3×3 matrix.
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Exponent Calculator
Raise a number to any exponent.
➗
Fraction Calculator
Add, subtract, multiply, and divide fractions with simplified results.
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GCD & LCM Calculator
Greatest common divisor and least common multiple of two integers.
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Proportion Calculator
Rule of three: if A is to B, then C is to X.
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Scientific Notation Calculator
Multiply a base by a power of ten (base × 10ⁿ).
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Weighted Average Calculator
Weighted mean for grades, KPIs, and survey scores.
Converters & geometry
More tools
🎂
Age Calculator
Calculate exact age in years, months, and days from your birth date.
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BMI Calculator
Body Mass Index from height and weight with health category guidance.
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Percentage Calculator
Find percentages, increases, decreases, and percent of any number.
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Tip Calculator
Split bills and calculate tip amounts for any party size.
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Unit Converter
Convert length, weight, temperature, speed, and volume units instantly.