🛠️ Useful Utilities
Free Online Tools
Free, fast, privacy-respecting online tools for everyday tasks. No signups, no tracking, no nonsense.
Categories
Calculators
26 financial, math & business calculators
Browse all →File Converters
14 image, document & data converters
Browse all →Developer Tools
20 format, validate, encode & generate utilities
Browse all →Text Utilities
10 clean, transform & analyze text tools
Browse all →SEO Tools
13 generate, analyze & validate SEO utilities
Browse all →Business & Legal
17 document generators & business calculators
Browse all →🎨 Image & Color
Image Compressor
Compress images while maintaining visual quality.
Image Resizer
Resize images with aspect ratio lock.
Image Cropper
Crop images with adjustable selection area.
Image Rotator
Rotate images by 90°, 180°, or custom angles.
Image Flipper
Flip images horizontally or vertically.
Image Blur
Apply Gaussian blur with adjustable radius.
Image Brightness
Adjust image brightness with live preview.
Image Contrast
Adjust image contrast levels interactively.
Image Saturation
Boost or reduce color saturation in images.
Image to Grayscale
Convert color images to black and white.
Image to Sepia
Apply vintage sepia tone to images.
Color Picker
Pick colors from images and get hex, RGB, HSL codes.
Color Contrast Checker
Check WCAG contrast ratios between colors.
Color Palette Generator
Generate harmonious color palettes from a seed color.
Color Scheme Generator
Generate monochromatic, complementary, and triadic schemes.
Gradient Generator
Create CSS gradients with multiple color stops.
Complementary Color Finder
Find complementary and contrasting colors instantly.
Analogous Color Generator
Generate 3-5 analogous color harmonies.
Triadic Color Generator
Generate evenly spaced triadic color schemes.
Tetradic Color Generator
Generate 4-color rectangular and square harmonies.
Tint & Shade Generator
Generate tints and shades of any color.
Random Color Generator
Generate random colors with names and codes.
Hex to RGB Converter
Convert hex color codes to RGB/HSL values.
Hex to HSL Converter
Convert hex to HSL color values.
Hex to CMYK Converter
Convert hex to CMYK for print design.
RGB to Hex Converter
Convert RGB values to hex color codes.
HSL to Hex Converter
Convert HSL values to hex color codes.
📊 Math & Statistics
Average Calculator
Calculate mean, median, mode of any number set.
Median Calculator
Find the median value in a dataset.
Mode Calculator
Identify the most frequent values in data.
Standard Deviation Calculator
Calculate population and sample standard deviation.
Variance Calculator
Compute population and sample variance.
Range Calculator
Calculate range, min, max of a data set.
Prime Number Checker
Check if a number is prime with factor listing.
Fibonacci Generator
Generate Fibonacci sequences up to N terms.
Factorial Calculator
Calculate factorial of any positive integer.
Permutation Calculator
Calculate nPr permutations with step-by-step formula.
Combination Calculator
Calculate nCr combinations with formula breakdown.
Fraction Simplifier
Simplify fractions and convert to mixed numbers.
Fraction to Decimal
Convert fractions to decimals and percentages.
Decimal to Fraction
Convert decimals to simplified fractions.
Percentage Increase Calculator
Calculate percentage increase between two values.
Percentage Decrease Calculator
Calculate percentage decrease between two values.
🌐 Network Tools
IP Address Lookup
Look up details about any IP address.
Subnet Calculator
Calculate subnet masks, ranges, and CIDR notation.
MAC Address Generator
Generate random valid MAC addresses.
Network Speed Converter
Convert between Mbps, Gbps, MB/s, and more.
IPv4 to IPv6 Converter
Convert IPv4 addresses to IPv6 mapped format.
Whois Lookup
Look up domain registration and ownership details.
DNS Lookup
Look up DNS records for any domain.
Port Scanner
Check common ports on any host.
🔐 Security Tools
Password Strength Checker
Analyze password strength and crack time.
AES Encrypt
Encrypt text using AES-256-CBC encryption.
AES Decrypt
Decrypt AES-256-CBC encrypted text.
MD5 Hash
Generate MD5 hash from any text input.
SHA-256 Hash
Generate SHA-256 hash from any text input.
Bcrypt Generator
Hash passwords with bcrypt and configurable rounds.
SHA-512 Hash Generator
Generate SHA-512 hash from any text.
Bcrypt Verifier
Verify a password against a bcrypt hash.
Base32 Encoder
Encode text to Base32 format.
Base32 Decoder
Decode Base32 encoded text.
ROT13 Encoder / Decoder
Encode or decode text using ROT13.
Morse Code Encoder
Convert text to Morse code.
Morse Code Decoder
Decode Morse code back to text.
✍️ Writing Tools
Character Counter
Count characters, words, sentences with spaces.
Character Counter (no spaces)
Count characters excluding spaces.
Syllable Counter
Count syllables in any English text.
Paraphrasing Tool
Rewrite text in different styles and tones.
Sentence Counter
Count sentences, paragraphs, and average sentence length.
Plagiarism Checker
Check text for potential plagiarism.
💾 Data Generation
CSV Generator
Generate sample CSV data with custom columns.
JSON Pretty Printer
Format and beautify JSON with indentation options.
Mock Data Generator
Generate realistic mock data for testing.
QR Code Generator
Generate QR codes from text or URLs.
Barcode Generator
Generate Code 128 barcode from text or numbers.
⏰ Time & Date
World Clock Converter
Convert time across different time zones.
Timezone Converter
Convert between timezones with date adjustment.
Countdown Timer
Set a countdown timer to any date and time.
Days Between Dates
Calculate exact days between two dates.
Weeks Between Dates
Weeks, months, years between any two dates.
Age in Days Calculator
Calculate exact age in days, hours, minutes.
Add Days Calculator
Add or subtract days from any date.
Stopwatch
Start, stop, and record lap times.
Months Between Dates
Calculate months, years, weeks, and days between any two dates.
Calendar Month View
View any month as a calendar grid.
🎲 Fun & Random
Random Number Generator
Generate random numbers within any range.
Coin Flipper
Flip virtual coins — heads or tails.
Dice Roller
Roll 1-6 dice with configurable sides.
Emoji Picker
Browse, search, and copy emojis quickly.
Hashtag Generator
Generate relevant hashtags from any topic.
Anagram Solver
Solve anagrams and find word combinations.
Word Unscrambler
Unscramble letters to find valid words.
Raffle Draw
Enter names and draw random winners.
Team Generator
Split a list of names into balanced random teams.
❤️ Health Tools
Calorie Calculator
Estimate daily calorie needs by age and activity.
Water Intake Calculator
Recommended daily water intake by weight.
Sleep Cycle Calculator
Calculate optimal bedtimes for 90-min sleep cycles.
Ideal Weight Calculator
Calculate ideal body weight by height and age.
Body Fat Calculator
Estimate body fat percentage from measurements.