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Math & Numeric Calculators

Free online math calculators for arithmetic, geometry, number systems, and numeric conversions.

Basic Calculator
Arithmetic operations instantly
Math→
Percentage Calculator
Percentages, increases & decreases
Math→
Area Calculator
Calculate area of any 2D shape
Geometry→
Volume Calculator
Calculate volume of any 3D shape
Geometry→
Binary ↔ Decimal
Convert binary, decimal & hex
Numbers→
Roman Numerals
Convert to and from Roman numerals
Numbers→
Compound Interest
Investment growth calculator
Finance→
Mortgage Calculator
Monthly mortgage payments & totals
Finance→
Loan / EMI Calculator
Monthly payments & total interest
Finance→
Currency Converter
Convert between major currencies
Finance→
Time Converter
Convert all time units instantly
Converter→
Weight Converter
Kilograms, pounds, grams
Converter→
Profit / Loss Calculator
Calculate profit, loss & margin
Business→
Temperature Converter
Celsius, Fahrenheit & Kelvin
Converter→
Length Converter
Meters, feet, inches & miles
Converter→
Discount Calculator
Calculate discounts & savings
Shopping→
Tip Calculator
Calculate tips & split bills easily
Restaurant→
Random Number Generator
Generate random numbers instantly
Math→
BMI Calculator
Calculate Body Mass Index
Health→
Age Calculator
Exact age in years, months & days
Date→

Text & Content Tools

Free online text tools for counting, formatting, and content processing.

Word Counter
Count words in any text instantly
Text→
Character Counter
Characters with or without spaces
Text→
Sentence Counter
Count sentences in your content
Text→
Case Converter
UPPER, lower, Title case
Text→
Text Reverser
Reverse any text or string
Text→
Slug Generator
Create SEO-friendly URLs
SEO→
Lorem Ipsum Generator
Generate placeholder text
Design→
Remove Extra Spaces
Clean up whitespace in text
Text→

Color Tools

Free online color tools for design and web development.

Hex to RGB
Convert hex color codes
Color→
RGB to Hex
Convert RGB to hex codes
Color→
Color Picker
Pick colors get hex codes
Design→
Color Mixer
Mix two colors together
Color→
Contrast Checker
Check color accessibility
Accessibility→
HSL to RGB
Convert HSL to RGB values
Color→
CMYK to RGB
Convert print colors to RGB
Print→

Time & Date Tools

Free online time and date calculators for planning and scheduling.

Date Difference
Days between two dates
Date→
Date Adder
Add or subtract days
Date→
Time Zone Converter
Convert between time zones
Time→
Week Number
Get ISO week number
Calendar→
Days Until
Countdown to any date
Countdown→
Leap Year Checker
Check if year is leap year
Calendar→

Fun & Utility Tools

Free fun tools and random generators for everyday use.

Lucky Number
Generate your lucky number
Fun→
Coin Flip
Heads or tails
Random→
Dice Roller
Roll dice for games
Random→
Random Picker
Pick from a list randomly
Random→
Password Generator
Generate secure passwords
Security→
UUID Generator
Generate unique IDs
Developer→

API & Developer Tools

Free developer tools and API helpers for web development.

IP Address Lookup
Get your public IP
Network→
User Agent Info
Browser information
Browser→
QR Code Generator
Create QR codes
QR→
JSON Formatter
Format JSON data
Developer→
Base64 Encoder
Encode decode Base64
Developer→
URL Encoder
Encode decode URLs
Developer→
Hash Generator
Generate MD5 SHA1 SHA256
Security→
HTML Entities
Encode decode entities
HTML→

Developer Tools

Free developer tools for coding and web development.

Code Formatter
Format and beautify code
Developer→
Syntax Highlighter
Highlight code syntax
Developer→
Regex Tester
Test regex patterns
Developer→
Diff Checker
Compare text differences
Developer→
Validator
Validate code syntax
Developer→

File & Compression

Free online file tools for image processing and conversion.

Image Resizer
Resize images online
Image→
Image Compressor
Compress images reduce size
Image→
Image Converter
Convert image formats
Image→
Image Cropper
Crop images to size
Image→
Image Rotator
Rotate and flip images
Image→

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