Browse our collection of 249 free online tools.
Convert kg to lbs and oz
Convert lbs to kg and g
Encode/decode Base64
Convert JSON to CSV and back
Convert cm to feet and inches
Convert cm to inches
Convert Unix timestamps
Convert F to C and C to F
Convert fractions to decimals
Convert between color formats
Pick and convert colors
Convert decimals to fractions
Convert cooking measurements
Convert shoe sizes worldwide
Convert binary, decimal, hex
Encode/decode URLs
Encode/decode HTML entities
Compress and resize images
Crop, rotate & flip images
Convert images to/from Base64
Convert Roman numerals
Convert ASCII codes
Convert text case
Convert Markdown to HTML
Convert inches to cm and mm
Convert between px & rem units
Convert bytes to KB, MB, GB, TB
Convert times between timezones
Convert miles to km and back
Translate text to/from Morse code
Search & copy emojis
Convert MPG, L/100km, km/L
Convert timestamps with timezone support
Convert text between 12 case formats
Convert text to binary & back
Convert any unit instantly
Current time in cities worldwide
Convert between area units - sq ft, sq m, acres, hectares
Convert cups to milliliters for cooking and baking
Convert feet to meters and meters to feet
Convert HTML to Markdown format instantly
Remove or normalize whitespace in text
Convert dates to ISO 8601 format
Convert between UTF-8, ASCII, hex, Base64
Convert ounces to grams and grams to ounces
Convert between mph, km/h, m/s, fps, and knots
Convert SVG to PNG with custom size and background
Convert between ml, L, gal, cups, fl oz and more
Convert CSV files to JSON format
Convert JSON to YAML format
Convert YAML to JSON format
Convert numbers to English words
Convert XML to JSON format
Convert JSON to XML format
Convert TOML to JSON
Convert em to pixels and back
Convert JSON to TypeScript interfaces
Convert HTML to React JSX
Convert CSV to SQL INSERT statements
Convert JSON to Go structs
Decode and view Base64 images
Convert HEX to RGB and HSL
Convert binary to text and back
Convert between standard and scientific notation
Format, beautify, or minify CSS code
Format, beautify, or minify JavaScript code
Format, beautify, or minify HTML markup
Convert SQL INSERT, CREATE TABLE, SELECT to JSON
Convert XML data to CSV table format
Encode/decode text with ROT13 and Caesar ciphers
Convert YAML configs to TOML format
Encode/decode Base32 text online
Decode/encode HTML entities online
Strip HTML tags and extract plain text
Convert px, rem, em, vw, vh and more
Boolean logic truth tables for any expression
Generate random UUIDs
Build CSS grid layouts visually
Generate secure passwords
Generate QR codes
Generate bulk QR codes
Random numbers, dice, coins & lottery
Flip a coin online
Generate XML sitemaps
Generate URL-friendly slugs
Roll dice online
Generate random placeholder images
Build flexbox layouts visually
Create Markdown tables visually
Generate hashes
Generate placeholder text
Generate SEO meta tags
Create and print invoices
Generate robots.txt files
Create CSS gradients visually
Generate CSS box shadows
Generate JWT tokens
Generate color palettes
Generate barcodes in multiple formats
Create HTML email signatures
Create tables & export as HTML, Markdown, CSV
Draw and sketch on a digital whiteboard
Generate audio tones at any frequency
Generate CSS border-radius code with visual editor
Generate favicons in all sizes from one image
Resize images with custom dimensions and formats
Shuffle lists and pick random items from entries
Spin wheel to pick random names
Minify or prettify SVG files to reduce size
Generate cron expressions visually
Generate placeholder images with custom sizes
Generate color palettes from images
Generate HMAC-SHA256/384/512 signatures
Generate .gitignore for any tech stack
Repeat text N times with custom separators
Generate regex patterns visually or from a library
Generate Apache .htaccess rules
Adjustable BPM metronome with tap tempo
Color wheel with harmony palettes
Estimate blood alcohol level
Calculate days between dates
Calculate your GPA
Calculate test grades and course averages
Calculate work hours
Calculate percentages
Calculate your age
Loan amortization schedule
Add/subtract time
Calculate body fat percentage
Calculate BMI, weight, or height
Calculate tip, percentage, or bill
Split bills with tip among groups
Calculate running pace, time, or distance
Calculate paint needed for rooms
Calculate payment, amount, or term
Calculate mortgage payments
Calculate business days
Calculate daily calories
Calculate compound interest
Calculate concrete needed for your project
Add, subtract, multiply, and divide fractions
Calculate due date & track pregnancy
Calculate basal metabolic rate
Stopwatch with lap tracking
Estimate reading & speaking time
Calculate sales tax
Convert salary to hourly
Plan savings goals
Calculate speed, distance, or time
Calculate optimal sleep & wake times
Calculate your net worth
Calculate ideal body weight
Calculate average and statistics
Compare renting vs buying a home
Decode resistor color bands
Scientific calculator online
Calculate factorials
Calculate Fibonacci numbers
Calculate with binary numbers
Calculate Unix file permissions
Calculate heart rate training zones
Calculate daily macros & calories
Matrix operations & linear algebra
Countdown to any date
Calculate investment growth
Plan retirement savings
Calculate return on investment
Calculate inflation impact on buying power
Solve quadratic equations
Solve with graph & steps
Calculate probabilities & combinations
Advanced margin, markup & comparison
Calculate triangle sides
Calculate standard deviation
Calculate discounts & savings
Advanced pregnancy due date with milestones
Calculate profit margins
Calculate take-home pay after taxes & deductions
Focus timer with work/break cycles
Calculate screen PPI & density
Calculate loan APR
Calculate area & perimeter of shapes
Calculate aspect ratios
Calculate break-even point
Plan your debt payoff strategy
Calculate appliance electricity costs
Track appliance-level electricity usage
Calculate trip fuel costs
Calculate ovulation date and fertile window
Calculate subnets & IP ranges
Calculate federal income tax by bracket
Calculate total daily energy expenditure
Calculate daily water intake
Calculate 3D shape volume & surface area
Calculate % increase, decrease, change, and difference
Find what date is X days from any date
Find GCD and LCM of numbers
Calculate distance between two coordinate points
Calculate IPv4 subnet details
Calculate screen DPI/PPI from resolution
Calculate subnets from CIDR notation
Full amortization schedule with extra payments
Solve triangles from any 3 values
Mean, median, std dev & more
Solve for V, I, R, or P from any two values
Z-scores, percentiles & normal distribution
Format & validate JSON
Minify or beautify CSS
Minify or beautify HTML
Parse cURL to GraphQL
Count characters and words
Check password strength
Count words and characters
Analyze text readability scores
Look up HTTP status codes
Test & learn regex patterns
Check if number is prime
Preview Markdown
View & analyze binary data
Find your public IP address instantly
Format & beautify SQL
Compare text differences
Parse cron expressions
Minify & beautify JavaScript
Decode JWT tokens
Validate & convert YAML
Test your typing speed & accuracy
Format & validate XML
Analyze and validate any IP address
Parse user agent strings to identify browser and device
Break down any URL into its parts
Test JSONPath expressions on JSON data
Check WCAG color contrast compliance
Calculate CRC-8, CRC-16, CRC-32 checksums
Analyze word frequency in text
Compare two JSON objects
Simulate color vision deficiency
Validate JSON data against a JSON Schema
Look up DNS records for any domain
Complete ASCII character reference table with search
Query JSON data with JSONPath expressions
View CSV data as a sortable table
Validate, analyze, and generate UUIDs
Parse and explain HTTP headers
Detect your screen resolution and display info
Compare two texts and highlight differences
Validate and analyze XML documents
Check email address validity