Free Online Tools
131 fast, simple tools. No signup, no install. Just use.
Everyday tools, ready in one click
TheToolSet is a collection of free online tools for everyday tasks: calculators for money, health and study; generators for passwords, QR codes, slugs and dummy data; converters for units, numbers and text; and utilities to clean, compare and format text. Every tool is free to use, with no account and no limits.
Everything runs entirely in your browser using JavaScript. Your data never leaves your device — nothing is uploaded, stored or tracked, so the tools are fast and private by default. Pick a category below and get started.
Calculators
Health & Body
BMI Calculator
Check your body mass index
Calorie Calculator
Daily calories, BMR and TDEE
Body Fat Calculator
Estimate your body fat percentage
Pregnancy Due Date
Due date from last period
Ideal Body Weight
Devine formula estimate
Water Intake Calculator
Daily water intake goal
Sleep Calculator
Optimal sleep schedule
Heart Rate Zones
Heart rate training zones
TDEE Calculator
Total daily calorie burn
Finance
Tip Calculator
Split bills and calculate tips
Loan Calculator
Monthly payment & total interest
Compound Interest
See how money grows over time
Savings Calculator
Project your savings and interest
Discount Calculator
Final price & savings
Hourly to Salary
Convert wage and salary
Mortgage Calculator
Monthly payment & total interest
VAT Calculator
Add or remove VAT / GST tax
ROI Calculator
Return on investment %
Break-even Calculator
Break-even units & revenue
Dates
Age Calculator
Exact age in years, days
Date Difference
Days between two dates
Date Calculator
Add or subtract days to a date
Business Days Calculator
Add or skip business days
ISO Week Number
ISO-8601 week number
Countdown to Date
Countdown to a date
Zodiac Sign
Zodiac sign from birth date
General
Percentage Calculator
Calculate percentages easily
Aspect Ratio
Compute dimensions from a ratio
GPA Calculator
Grade point average, 0–4 scale
Statistics Calculator
Mean, median, stdev, variance
Ratio Calculator
Scale and compare ratios
Geometry Calculator
Areas, perimeters, volumes
Quadratic Equation Solver
Solve quadratic equations
Generators
Text & Data
Lorem Ipsum
Placeholder text generator
Fake Data Generator
Dummy names, emails, addresses
Random Word
Random words and phrases
Invoice Numbers
Sequential invoice numbers
Random Sentence
Random sentences on a topic
Random Date
Random date in a range
Random ID
Random IDs & codes
Random PIN
Random PIN codes
Random Serial Number
Random serial numbers
Random Sequence
Random ordered sequences
Security & Codes
QR Code Generator
Create & download QR codes
Password Generator
Strong random passwords
UUID Generator
Generate v4 UUIDs
Hash Generator
SHA-1, 256, 384 and 512
Password Strength Checker
Check password strength
Random Hex
Random hex color or value
API Key Generator
Random API keys & tokens
Random MAC Address
Random MAC address
Design & Colors
Color Palette
Random color combinations
CSS Gradient Generator
Linear and radial gradients
Box Shadow Generator
Design a CSS box shadow
Color Contrast Checker
WCAG contrast ratio check
Placeholder Image
Custom SVG placeholder
Avatar Generator
Initials avatars, download PNG
Text Shadow Generator
CSS text-shadow styles
Border Radius Generator
CSS border-radius values
Favicon Generator
Favicon from text or shape
Pattern Generator
CSS background patterns
Names & Numbers
Baby Name Generator
Names by style and origin
Username Generator
Unique usernames and handles
Random Number
Random numbers, unique or not
Company Name Generator
Business and startup names
Product Name Generator
Clever product names
Team Name Generator
Team and squad names
Pet Name Generator
Cute pet name ideas
Hashtag Generator
Trending hashtags for a topic
Slogan Generator
Catchy slogans & taglines
Band Name Generator
Band and group names
Converters
Numbers
Number Base
Binary, octal, decimal, hex
Roman Numerals
Number to Roman and back
Number to Words
Number to English words
Character Code
Unicode code point lookup
Factorial Calculator
n! for large numbers
Fibonacci Sequence
Fibonacci sequence up to N
Prime Number Checker
Prime test up to a limit
GCD & LCM
GCD and LCM of numbers
Scientific Notation
Standard to scientific form
Colors
Color Converter
HEX, RGB and HSL colors
Color Name
Name a color from its hex
Color Schemes
Complementary, triadic, analogous
Color Blindness Simulator
Preview colors for CVD types
Units & Measures
Unit Converter
Length, weight, temperature
Temperature
Celsius, Fahrenheit, Kelvin
Data Storage
Bytes, KB, MB, GB, TB
Time Converter
Seconds, minutes, hours, days
Angle Converter
Degrees, radians, gradians
Unix Timestamp
Epoch to date and back
Speed Converter
m/s, km/h, mph, knots
Area Converter
m², ft², acres, hectares
Volume Converter
Liters, gallons, m³, ft³
Energy Converter
Joules, calories, kWh
Power Converter
Watts, horsepower, BTU
Frequency Converter
Hz, kHz, MHz, GHz
Pressure Converter
Pa, bar, psi, atm
12/24 Hour Converter
12-hour and 24-hour time
Encoding & Data
Base64 Encode/Decode
Encode or decode Base64
Morse Code
Text to Morse and back
HTML Entities
Escape & unescape HTML entities
ROT13
ROT13 encode and decode
Caesar Cipher
Caesar cipher, any shift
Atbash Cipher
Atbash letter substitution
Base32 Encode/Decode
Base32 encode and decode
Base58 Encode/Decode
Base58 encode and decode
Hex to Bytes
Hex string to bytes and back
Text Tools
Analysis
Word Counter
Words, chars, reading time
Word Frequency
Word counts, ranked
Text Diff
Compare and highlight changes
Character Counter
Characters, words, sentences
Reading Time
Estimated reading time
Readability Score
Flesch reading score
Editing
Text Case Converter
UPPER, lower, Title Case
Find & Replace
Search and replace with count
Remove Duplicates
Dedupe lists of lines
Text Reverse
Reverse characters or words
Clean Whitespace
Trim, collapse & normalize
Line Numbers
Number every line
Sort Lines
Sort lines alphabetically
Shuffle Lines
Shuffle line order
Text Wrap
Wrap or unwrap at a width
Developer
JSON Formatter
Format, minify and validate
URL Encoder/Decoder
Encode and decode URLs
Markdown Preview
Live Markdown to HTML
Slug Generator
URL-friendly slugs
CSV to JSON
Convert CSV and JSON
Regex Tester
Test and highlight regex
HTML Minifier
Minify HTML markup
CSS Minifier
Minify CSS styles
JSON Validator
Validate and format JSON