Online Calculators

50+ free calculators for math, finance, health, time, and unit conversion

50+ Calculators 100% Free No Registration
Quick Summary: Our free online calculators provide 50+ calculation tools for math, finance, health, time, and unit conversion instantly. Access basic calculator, scientific calculator, BMI calculator, loan calculator, EMI calculator, age calculator, percentage calculator, and unit converters. Perfect for students, professionals, and everyday calculations. All calculators work instantly without registration.

Math & Number Calculators

Basic and advanced mathematical calculators

Basic Calculator

Add, subtract, multiply, divide

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Scientific Calculator

Advanced scientific calculations

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Percentage Calculator

Calculate percentages easily

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Fraction Calculator

Add, subtract, multiply, divide fractions

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Ratio Calculator

Calculate and simplify ratios

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Exponent Calculator

Calculate powers and exponents

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Root Calculator

Square root, cube root, n-root

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Logarithm Calculator

Calculate logarithms and natural logs

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Random Number Generator

Generate random numbers

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Number Base Converter

Convert binary/decimal/hex/octal

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Algebra & Geometry

Solve equations and calculate geometric properties

Quadratic Solver

Solve quadratic equations

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Linear Equation Solver

Solve linear equations

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Polynomial Solver

Solve polynomial equations

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Matrix Calculator

Matrix operations and determinant

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Vector Calculator

Vector operations and calculations

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Triangle Calculator

Calculate triangle properties

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Circle Calculator

Area, circumference, diameter

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Rectangle Calculator

Area, perimeter, diagonal

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Pythagorean Calculator

Calculate triangle sides

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Finance Calculators

Calculate interest, loans, savings, and more

Simple Interest

Calculate simple interest

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Compound Interest

Calculate compound interest

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Loan EMI Calculator

Calculate loan EMI payments

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Mortgage Calculator

Calculate mortgage payments

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Savings Growth

Calculate savings growth

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Discount Calculator

Calculate discounts and savings

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Markup Calculator

Calculate markup and margin

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Health & Fitness

Calculate BMI, BMR, calories, and more

BMI Calculator

Calculate Body Mass Index

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BMR Calculator

Basal Metabolic Rate

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Calorie Burn

Estimate calories burned

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Ideal Weight

Calculate ideal body weight

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Body Fat %

Calculate body fat percentage

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Time & Date

Calculate age, dates, and time differences

Age Calculator

Calculate age from date of birth

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Date Difference

Calculate days between dates

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Countdown Timer

Create countdown timers

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Working Days

Calculate working days

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Unit Converters

Convert between different units

Length Converter

Convert length units

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Weight Converter

Convert weight units

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Temperature Converter

Convert temperature units

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Area Converter

Convert area units

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Volume Converter

Convert volume units

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Speed Converter

Convert speed units

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Pressure Converter

Convert pressure units

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Energy Converter

Convert energy units

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Time Converter

Convert time units

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Crypto & Hash Utilities

Encode, decode, and generate hashes

Base64 Encode/Decode

Encode and decode Base64

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Hash Generator

MD5, SHA1, SHA256 hashes

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UUID Generator

Generate unique identifiers

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Statistics & Probability

Calculate statistics and probabilities

Mean/Median/Mode

Calculate central tendencies

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Standard Deviation

Calculate standard deviation

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Permutation/Combination

Calculate permutations & combinations

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Probability Calculator

Calculate probabilities

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