Everyday tasks,
finished in one place.
Check Korean employment calculations, count text, convert measurements and edit images.
Get the result without complicated menus.
Work & documents tools
Use sourced Korean employment calculations and precise text counts.
Korea Severance Pay Calculator
Estimate statutory Korean severance pay using the Ministry of Employment and Labor formula.
Open →LeaveKorea Annual Leave Calculator
Check the statutory annual-leave accrual baseline from employment dates.
Open →DocumentCharacter Counter
Count characters with and without spaces, words, lines and UTF-8 bytes.
Open →Finance & math tools
Calculate interest, loans, instalments, returns and probabilities.
Interest Calculator
Calculate simple interest and maturity value from principal, rate and term.
Open →CompoundCompound Interest Calculator
Calculate future value and earnings for different compounding frequencies.
Open →LoanLoan Calculator
Estimate monthly payments, total repayment and interest for a loan.
Open →InstalmentInstalment Calculator
Compare monthly payments and total interest for 0% and amortising instalments.
Open →SavingsSavings Calculator
Estimate future value from an initial deposit and monthly contributions.
Open →ReturnInvestment Return Calculator
Calculate profit, total return and compound annual growth rate.
Open →PercentagePercentage Calculator
Find what percentage one value is of another.
Open →ChangePercentage Change Calculator
Calculate the percentage increase or decrease between two values.
Open →DiscountDiscount Calculator
Calculate the amount saved and final price after a discount.
Open →ProbabilityProbability Calculator
Use fractions or percentages to calculate independent events and repeated-trial probabilities.
Open →Date & time tools
Calculate dates and times quickly and accurately.
Date Difference Calculator: Days Between Dates
Calculate elapsed days, inclusive calendar days, and weeks between any two dates.
Open →DateAdd or Subtract Days Calculator
Add days to a date or subtract days to find dates such as 30 or 100 days from a chosen starting date.
Open →CountdownCountdown Calculator
See how many days remain until a target date or have passed since it.
Open →Business daysBusiness Days Calculator: Add 5 or 10 Business Days
Add or subtract business days, find the date in 5 or 10 business days, or count workdays between dates with optional 2026 holiday calendars.
Open →AgeAge Calculator
Calculate exact age from a birth date and a reference date.
Open →MonthsMonths Between Dates
Calculate complete months and remaining days between two dates.
Open →WorkWork Hours Calculator
Subtract break time from clock-in and clock-out times.
Open →TimeAdd or Subtract Time Calculator
Add or subtract hours and minutes from a clock time and see whether the result moves to the previous or next day.
Open →ISO WeekISO Week Number Calculator: Week Number From Date
Find the ISO 8601 week number and week-numbering year for any date using Monday as the first day of the week.
Open →WeekdayDay of the Week Calculator: Find Any Date’s Weekday
Enter a past or future date to find its day of the week and ordinal day of the year.
Open →Unit conversion tools
Convert common measurements including area, weight and length.
Pyeong to Square Feet, m² and Acres Converter
Convert pyeong (평) to square feet, square metres or acres. Try 34 pyeong or choose other area units, with instant results and clear conversion examples.
Open →LengthLength Converter
Convert millimetres, centimetres, metres, inches, feet and miles.
Open →WeightWeight Converter
Convert milligrams, grams, kilograms, pounds and ounces.
Open →VolumeVolume Converter
Convert millilitres, litres, cups, fluid ounces and gallons.
Open →TemperatureTemperature Converter
Convert Celsius, Fahrenheit and Kelvin temperatures.
Open →FuelFuel Economy Converter
Convert km/L, L/100 km and US MPG fuel economy.
Open →SpeedSpeed Converter
Convert km/h, m/s, mph and knots.
Open →DataData Size Converter
Convert bytes, KB, MB, GB and TB.
Open →PressurePressure Converter
Convert Pa, kPa, bar, psi and atmospheres.
Open →AngleAngle Converter
Convert degrees, radians, gradians and turns.
Open →Instant calculations. Local image processing.
Calculations happen instantly and selected image files never leave your device.
Image tools
Process photos locally without uploading them to a server.
Image Compressor
Reduce JPG and WebP file size while comparing image quality.
Open →PixelsImage Resizer
Set exact pixel dimensions while keeping the original aspect ratio.
Open →ConvertImage Format Converter
Convert JPG, PNG and WebP files directly in your browser.
Open →RatioImage Cropper
Crop an image to 1:1, 4:3, 3:4 or 16:9 from the center.
Open →CheckPassport Photo Ratio Checker
Quickly check image resolution and the 35 × 45 mm aspect ratio.
Open →PrintID Photo Print Sheet
Arrange 30 × 40 mm or 35 × 45 mm photos on one A4 sheet.
Open →CalculateDPI and Print Size Calculator
Calculate the relationship between pixels, DPI and physical print size.
Open →PrivacyImage Metadata Remover
Create a fresh image file without common location and camera metadata.
Open →DocumentSignature Image Trimmer
Automatically remove white margins around a photographed signature.
Open →SocialSocial Media Image Resizer
Create square posts, vertical stories and thumbnail sizes.
Open →