All Tools
Most frequently used tools for quick calculations and everyday tasks.
LCM & HCF / GCD Calculator
Find the Least Common Multiple (LCM) and Greatest Common Divisor (GCD / HCF) of two or more numbers using Euclidean and prime factorization methods.
Percentage Difference Calculator
Compute the absolute percentage difference between two unrelated figures, provided that neither figure is the initial baseline.
Factorial Calculator
Find the factorial (n!), double factorial, permutation (nPr), and combination (nCr) values using scientific notation with full digit expansions.
Circle & Sector Calculator
Calculate radius, diameter, circumference, surface area, arc length, and area of a sector of a circle using formulas with pi.
Volume & 3D Surface Area Calculator
Calculate the volume and surface area of 3D geometric shapes: sphere, cylinder, cone, cube, rectangular prism, and pyramid with unit conversions.
Proportion Calculator
Solve proportions, find missing values in equal ratios (x/y = a/b), scale recipe ingredients, and verify proportional equivalence.
BMI Calculator
Calculate your Body Mass Index (BMI), prime index, and WHO classification for your health accurately for both metric and imperial units.
Discount Calculator
Calculate final sale prices, money saved, double stacked discounts, and sales tax at checkout with instant shopping savings breakdown.
Power & Exponent Calculator
Solve powers, negative exponents, fractional exponents, and scientific exponential expressions through step-by-step expansion.
Decimal to Fraction Converter
Step-by-step Reduction for Terminating and Repeating Decimals Into Proper Fractions, Improper Fractions, and Mixed Numbers
Age Calculator
Calculate your exact chronological age in completed years, months, days, hours, and minutes with upcoming birthday milestones and day of birth.
Square Root & Cube Root Calculator
Find the square root, cube root, and N-th root of any positive or negative number with radical simplification and high decimal precision.
Prime Factorization Calculator
Find the prime factors of any positive integer with prime factor trees, exponential notation, and canonical prime factorization decomposition.
Number to Words Converter
Translate numbers and currency values into words for use in bank checks, legal contracts, receipts, and invoices in International and Indian formats.