Free Online Calculator โ Fast & Easy Math Tools
Use our free online calculator for quick math, percentages, and conversions. Simple, accurate, and mobile-friendly tools for everyday calculations.
โข You can input expressions directly or click buttons
โข Supports parentheses and complex operations
โข Press Enter to calculate, automatically added to history โจ
โข Click history records to re-edit
Calculator Categories
Math Calculators
Our math calculators provide accurate and efficient solutions for a wide range of mathematical problems. From basic arithmetic to complex percentage calculations, our tools help you solve problems quickly and accurately. Whether you're a student working on homework, a professional handling financial calculations, or someone who needs quick math solutions, our calculators are designed to be user-friendly and reliable.
Finance Calculators
Our finance calculators provide accurate calculations for various financial scenarios, helping you understand loan terms, payment schedules, interest costs, and overall financial impact. Whether you're planning to buy a home, finance a car, or manage personal loans, our tools offer detailed breakdowns and comparisons to support your financial decisions.
Health Calculators
Our health calculators provide reliable tools for monitoring various health metrics and fitness indicators. From body mass index (BMI) calculations to comprehensive health assessments, our tools help you understand your current health status and track your progress toward wellness goals. Whether you're starting a fitness journey, monitoring your health, or working with healthcare professionals, our calculators offer accurate measurements and valuable insights.
Daily Life Calculators
Our daily life calculators provide convenient solutions for common calculations you encounter in your everyday routine. From determining exact ages and time differences to calculating academic grades and managing schedules, our tools help you handle these tasks quickly and accurately. Whether you're planning events, tracking milestones, or managing academic progress, our calculators make these calculations simple and reliable.
Date & Time Calculators
Our date and time calculators provide precise solutions for all your date and time-related calculations. From determining exact ages and calculating time differences between dates to performing date arithmetic operations and tracking holidays like Memorial Day and Christmas, our tools help you handle these calculations quickly and accurately. Whether you're planning events, tracking milestones, managing schedules, calculating durations, or counting down to holidays, our calculators make date and time calculations simple and reliable.
Food Calculators
Discover specialized calculators for cooking, baking, and food preparation. Calculate sugar syrup ratios, recipe conversions, and more for perfect cul
Automotive & Engine Calculators
Our automotive and engine calculators provide precise tools for vehicle maintenance, engine tuning, and automotive calculations. Whether you're a professional mechanic or a car enthusiast, these calculators help you make informed decisions about your vehicle's performance and maintenance needs.
Unit Converters
Powerful unit conversion tools supporting area, length, weight, temperature, and other common unit conversions with precision and ease.
Other Calculators
Discover specialized calculators for file sizes, games, and other useful tools. Free online utilities for everyday calculations and conversions.
Most Popular Calculators
Sin Cos Tan Table (0ยฐโ360ยฐ)
Complete sin cos tan table in degrees and radians (0ยฐโ360ยฐ), including exact values for special angles, quadrant signs, and quick lookup for trigonometry.
Trigonometry Calculator
Free trigonometry calculator for sin, cos, tan, and inverse trig functions. Convert degrees/radians, explore graphs, unit circle values, and trig tables. Fast, accurate, and easy to use.
Decimal to Hexadecimal Converter
Convert decimal numbers to hexadecimal instantly. Free online decimal to hex converter with detailed steps for quick and accurate conversions.
Arctan Calculator (Inverse Tangent)
Compute arctan(x) with rad/deg output and quadrant considerations.
Trigonometry Graphing Tool
Plot sine, cosine, and tangent functions. Adjustable amplitude and period.
Binary to Decimal Converter
Convert binary numbers to decimal instantly. Free online binary to decimal converter with detailed steps for quick and accurate conversions.
Circle Calculator
Complete circle calculator: calculate radius, diameter, circumference, and area from any one known value. Free online circle calculator with formulas and step-by-step solutions.
Hexadecimal to Binary Converter
Convert hexadecimal numbers to binary instantly. Free online hex to binary converter with detailed steps for quick and accurate conversions.
Past Thanksgiving Dates
See when Thanksgiving fell in past years. Instantly generate a list of Thanksgiving dates for the last 5, 10, 20, or custom year ranges.
Binary Calculator
Perform binary arithmetic operations with step-by-step visualization. Supports addition, subtraction with carry/borrow annotations.
File Size Calculator
Convert between file size units (bytes, KB, MB, GB, TB, PB) and compare storage sizes. Free online file size converter tool.
Square Root Calculator
Free online square root calculator (radical calculator) to find the square root of any number. Calculate โx with precision and learn the mathematical principles behind square roots and radicals.
Hexadecimal to Decimal Converter
Convert hexadecimal numbers to decimal instantly. Free online hex to decimal converter with detailed steps for quick and accurate conversions.
Cosine Calculator (cos x)
Calculate cos(x) instantly in degrees or radians. Includes cosine properties and common angle values.
Circumference Calculator
Calculate the circumference of a circle using radius or diameter. Free online circumference calculator with C = 2ฯr and C = ฯd formulas, step-by-step solutions.
Last updated: 2025-10-21