Math, Science & Engineering
A complete collection of scientific and engineering calculation tools for students, educators, professionals, and enthusiasts. From basic unit conversions to advanced physics simulations, financial calculations, and specialized engineering tools. Solve equations, convert measurements, calculate loan payments, simulate physical phenomena, balance chemical equations, design electrical circuits, and estimate construction costs—all with accuracy and ease.
Convert a fraction to a decimal or percent and back. Results simplify automatically and show as mixed numbers when above one.
Find the greatest common divisor (GCD/HCF) and least common multiple (LCM) of two or more numbers, with prime factorization, factors, and step-by-step solutions.
Check if numbers are prime, factorize into prime factors, generate prime lists, and find primes in any range.
Calculate exponents, nth roots, and powers of 2 instantly. Quick presets, a powers-of-2 reference table, options, and saved calculation history.
Convert numbers to and from scientific notation. Auto-detects the direction and shows superscript, standard, E-notation, and caret formats with adjustable precision.
Convert numbers between Binary, Octal, Decimal, and Hexadecimal at once. Built for programmers, students, and anyone working across number systems.
Convert any number to words instantly. Spells out decimals, negative numbers, and check amounts, with a currency mode and 52 languages.
Convert between Roman numerals and Arabic numbers instantly with auto-detection. Single conversion, batch processing, and range generation from 1 to 3999.
Calculate percentages with 5 modes: X% of Y, what percent X is of Y, increase/decrease, percent change, and percent difference. Live results with step-by-step formulas.
Add, subtract, multiply, and divide fractions with automatic simplification. Supports mixed numbers and shows step-by-step solutions.
Calculate with extremely large numbers beyond normal calculator limits. Handles addition, subtraction, multiplication, division, powers, roots, factorial, GCD, and LCM with arbitrary precision.
Convert between kg/m³, g/cm³, lb/ft³, g/mL and 14 density units. Instant results with customizable decimal precision for science and engineering.