๐งฎ Everyday Calculators
Korean age, days between dates, pyeong conversion โ quick answers to everyday questions.
Korean Age Calculator
Korean age calculator! Enter your birth date to compare international age, Korean age, and year age at a glance. Includes next-birthday D-day, days lived, and birth weekday.
Use Now โ๐Date Calculator
Date calculator! Count the days between two dates in days, weeks, months, and years โ with a weekends-excluded business-day option โ and add or subtract days, weeks, and months from any date.
Use Now โ๐D-Day Calculator
Calculate D-day, date differences, days remaining or passed. Perfect for exams, anniversaries, due dates and more!
Use Now โ๐Pyeong Converter
Pyeong converter! Instantly convert between pyeong and square meters both ways. Includes a common apartment area table (84mยฒ = 25.4 pyeong) and an exclusive vs. gross area guide!
Use Now โ๐Unit Converter
Convert 9 categories: length, weight, temperature, area, volume, speed, time, data, pressure. cm to inches, kg to lbs, km/h to mph.
Use Now โโ๏ธBMI Calculator
BMI Body Mass Index calculator! Enter height and weight to check your BMI instantly. Normal weight range and health guide included!
Use Now โโฒ๏ธTimer & Stopwatch
Online timer & stopwatch! Pomodoro timer, countdown, lap time recording. Great for study, workout, and cooking!
Use Now โ๐ฑLotto Number Generator
Lotto number generator! Draw 6 random numbers from 1-45 using cryptographic randomness. Fixed/excluded numbers, up to 5 games at once, and history tracking!
Use Now โ๐๏ธKorean Holidays & Days Off
All Korean public holidays for 2026-2027 at a glance! D-day countdown to the next day off, full holiday tables with substitute-holiday badges, and automatic long-weekend and sandwich-day detection for Seollal and Chuseok planning.
Use Now โ๐Lunar-Solar Calendar Converter
Convert between the Korean lunar and solar (Gregorian) calendars instantly. Leap months, sexagenary (Gapja) names, lunar birthdays, and holiday dates โ free.
Use Now โโณ๏ธSpecial Characters & Symbols
Copy 500+ special characters with one click โ stars, hearts, arrows, circled numbers, math symbols, and emoji. Search by name, recent history, and a basket mode.
Use Now โ๐ขKorean Tenure Calculator
Korean tenure calculator! Enter your hire date to instantly see your length of service, statutory annual paid leave under Article 60 of the Labor Standards Act, the next accrual increase, and severance eligibility.
Use Now โโฑ๏ธInterval Timer (HIIT & Tabata)
Workout interval timer! Set prep, work, rest, sets, and rounds freely, or start instantly with Tabata/HIIT presets. Beep cues on phase changes, last-3-second countdown, screen wake lock, and accurate background timing.
Use Now โ๐Multi Stopwatch
Multi stopwatch to time several racers at once! For track, swimming, running crews, and PE class โ mass start, then tap each finisher for auto-ranked results. 10ms precision, copy & CSV export.
Use Now โ๐World Clock & Time Zone Converter
World clock & time zone converter! See the live time in New York, London, Tokyo and more, with the difference from Seoul. Automatic daylight saving, meeting-time conversion (Seoul 3PM = New York 1AM), and a 12/24-hour toggle โ all free.
Use Now โ๐๏ธAnnual Leave Planner (Bridge Days)
Plan when to use next year's annual leave. This tool finds the weekday gaps around 2026-2027 Korean holidays, fills them with 1โ3 days of leave, and ranks the resulting breaks by efficiency (days off รท leave used). e.g. one day of leave around Chuseok 2027 = 6 days off; one day between Labor Day and Children's Day = 5 days off. Enter your leave balance, pick recommendations, and see your total rest instantly.
Use Now โ