Calculators for Every Country

Health & Body

BMI, calorie, due date, and body measurement calculators

Finance & Investment

Compound interest, loan EMI, real estate tax, and investment calculators

Math & Numbers

Percentage, area conversion, and number calculators

Date & Time

Age, military service, date difference, and calendar calculators

BMI Calculator

Calculate Body Mass Index with WHO and Asia-Pacific standards

Age Calculator

Calculate age with Korean, Vietnamese, Japanese counting age systems

Percentage Calculator

Calculate percentages, percentage change, and percentage of a number

Compound Interest Calculator

Calculate compound interest with different compounding frequencies

Loan EMI Calculator

Calculate equated monthly installment for loans with amortization schedule

Due Date Calculator

Calculate pregnancy due date and trimester timeline

Calorie Calculator

Calculate daily calorie needs based on age, weight, height, and activity level

Military Discharge Date Calculator

Calculate Korean military discharge date for Army, Navy, Air Force, Marines, and Social Service

Pyeong Converter

Convert between Pyeong (평), square meters, and square feet for Korean real estate

Lunar-Solar Calendar Converter

Convert between Korean/Chinese lunar calendar and solar (Gregorian) calendar with zodiac and sexagenary cycle

Japanese Era Converter (和暦西暦変換)

Convert between Japanese era years (Meiji, Taishō, Shōwa, Heisei, Reiwa) and Western calendar

Tsubo / Tatami Converter (坪畳変換)

Convert between Tsubo (坪), Tatami (畳), and square meters for Japanese real estate

Yakudoshi Checker (厄年チェック)

Check Japanese yakudoshi (unlucky years) with pre-calamity, main calamity, and post-calamity years

Acquisition Tax Calculator (Korea)

Calculate Korean property acquisition tax (취득세) including rural and education surtax

Capital Gains Tax Calculator (Korea)

Calculate Korean property capital gains tax (양도소득세) with long-term holding deduction

Realtor Fee Calculator (Korea)

Calculate Korean realtor commission (중개수수료) for property sales and rentals

Jeonse-Monthly Rent Converter (Korea)

Convert between Korean jeonse deposit and monthly rent using conversion rate (전월세 전환율)

GPA Converter (Korea)

Convert GPA between Korean university grading scales (4.5, 4.3, 4.0) with grade reference table

CSAT Grade Calculator (Korea)

Convert Korean CSAT (수능) percentile to 9-grade scale with cutoff reference table

Housing Subscription Points Calculator (Korea)

Calculate Korean housing subscription points (청약가점) for homeless period, family, and savings account

Tip Calculator

Calculate tip amount and split bill between multiple people

Discount Calculator

Calculate sale price after discount and savings amount

Mortgage Calculator

Calculate monthly mortgage payment with amortization schedule and total interest

Savings Goal Calculator

Calculate how long to reach your savings goal with regular deposits and interest

Inflation Calculator

Calculate future purchasing power and inflation-adjusted value of money

Unit Price Comparator

Compare unit prices to find the best value when shopping

Ideal Weight Calculator

Calculate ideal body weight using Devine, Robinson, Miller, and Hamwi formulas

Body Fat Percentage Calculator

Estimate body fat percentage using US Navy and BMI methods

Water Intake Calculator

Calculate daily water intake recommendation based on weight and activity level

Sleep Calculator

Calculate optimal bedtime and wake time based on 90-minute sleep cycles

Running Pace Calculator

Calculate running pace, finish time, and splits for any distance

Temperature Converter

Convert between Celsius, Fahrenheit, and Kelvin temperature scales

Length Converter

Convert between meters, feet, inches, centimeters, kilometers, and miles

Weight Converter

Convert between kilograms, pounds, ounces, grams, and stones

Speed Converter

Convert between km/h, mph, m/s, knots, and Mach number

Data Storage Converter

Convert between bytes, KB, MB, GB, TB, and PB with binary and decimal units

Number Base Converter

Convert numbers between binary, octal, decimal, and hexadecimal

Days Between Dates

Calculate the number of days, weeks, and months between two dates

Date Add/Subtract Calculator

Add or subtract days, weeks, months, or years from any date

Week Number Calculator

Find the ISO week number for any date and view the full year calendar