Calculators
BMI Calculator
Body Mass Index
Loan Calculator
Interest & payments
Compound Interest
Compound returns
Dividend Calculator
Dividend income calc
FIRE Calculator
Early retirement calc
Age Calculator
Exact age calculation
D-Day Calculator
Date difference
Discount Calculator
Sale price & savings
Percentage Calculator
Ratio & percentage
GPA Calculator
Grade point average
Aspect Ratio
Ratio & resolution
Speech Time Calculator
Words to speech time
Typing Speed Test
Measure WPM & accuracy
Dice & Coin
Roll dice, flip coin
Stopwatch
Precision stopwatch
Percentage Calculator
What is A% of B?
Tip Calculator
Tip + split by people
Speed/Distance/Time
Calculate any one of three
GCD & LCM
Greatest common divisor
Due Date
Pregnancy due date
Fuel Economy
km/L · MPG
Area
Circle, triangle, rectangle
Volume
Sphere, cylinder, box
Pythagorean
a²+b²=c²
Std Deviation
Mean, variance, σ
Remainder
Quotient & remainder
Converters
Unit Converter
Length, weight, volume
Temperature
°C / °F / K
Timezone Converter
World time zones
Base Converter
Binary, Octal, Hex
Date Converter
Date format conversion
Korean Romanizer
Korean to Roman letters
Solar-Lunar Converter
Solar↔Lunar date conversion
Image Compress
Reduce size (JPG/WebP)
Image Resize
Change image dimensions
Font Preview
Compare Google Fonts live
Timestamp Converter
Unix timestamp conversion
Screen Resolution
Display size & resolution
Morse Code
Text ↔ Morse code
File Size
B ↔ KB ↔ MB ↔ GB
Markdown Editor
MD → HTML preview
Image→Base64
Image to text
CSV→JSON
CSV conversion
HTML→Text
Strip HTML tags
Number to Words
123→one hundred...
Text→Image
Text to image
Generators
Password Generator
Secure passwords
QR Code Generator
Create QR codes
Random Picker
Random number/name
Hash Generator
MD5 / SHA256
Name Generator
Fantasy & random names
UUID Generator
Generate unique IDs
Lorem Ipsum
Dummy placeholder text
Random Color
Random color palette
Checklist
Markdown checklist
Text Tools
Character Counter
Characters, words, bytes
Whitespace Remover
Clean up spaces
Case Converter
UPPER / lower / Title
Duplicate Remover
Remove duplicate lines
Encoding Converter
Base64 / URL encode
JSON Formatter
Format & validate JSON
Line Sorter
A-Z, Z-A, random sort
Reverse Text
Flip chars, words, lines
URL Encoder
Encode/decode URL chars
HTML Entity
& ↔ &
Regex Tester
Real-time matching
Text Diff
Compare two texts
Word Frequency
Most used words
Line Numbers
Add numbers per line
Text Repeat
Repeat N times