Small tools, big help
No install. No searching. Just use it
All the calculators and converters you need, in one place
Sign in to bookmark your favorite tools
Character Counter
Count characters and words with/without spaces
Age Calculator
Calculate international age from birthdate
D-day Calculator
Calculate days until or since a date
Date Difference
Calculate days between two dates
Unit Converter
Convert length, weight, area, temperature
Split Bill
Calculate per-person cost for group expenses
Discount Calculator
Calculate discount rate and sale price
Ladder Game
Online random ladder draw
Random Picker
Randomly pick from a list or number range
QR Code Generator
Convert URL/text to QR code
BMI Calculator
Calculate body mass index from height and weight
Salary Calculator (Korea)
Net monthly pay after Korean insurance & tax deductions
Beauty Size Calculator
Ideal body proportions based on height (women)
Color Converter
Convert between HEX, RGB, and HSL color codes
Lunar↔Solar Converter
Convert between lunar and solar calendar dates
Weekday Calculator
Find out which day of the week a date falls on
BMR Calculator
Basal metabolic rate & daily calorie needs
Period Calculator
Ovulation, fertile window & next period
Water Intake Calculator
Daily recommended water intake
Loan Calculator
Equal payment / equal principal loan repayment
Palette Generator
Auto-generate design palettes from a base color
Compound Calculator
Lump sum / savings compound interest
Nickname Generator
Random nickname & username ideas
Electric Bill Calculator
Korean residential electricity cost with tiered rates