Calculators
Everyday math, finance and health calculators with the formula shown, so you can see exactly how each result is worked out.
25 tools
Average CalculatorPaste a list once to see its average, middle, most common value, and spread — with the sample or population choice visible.BMI CalculatorEnter height and weight to compare WHO and Korean adult BMI ranges at once.Calorie CalculatorSee your Mifflin–St Jeor BMR formula, maintenance calories, and a live planning target in one place.Compound Interest CalculatorSee a starting amount and monthly savings grow together, with a live annual chart and schedule—without sending your numbers anywhere.Currency ConverterTurn the rate you were actually quoted into a clear received amount, total charges, and effective rate — right in your browser.Discount CalculatorWork out a final price, actual percent off, or original price — including up to three successive discounts shown step by step.Due Date CalculatorCalculate an estimated due date and a clear pregnancy-week timeline without sending your date anywhere.Fraction CalculatorType fractions naturally and see an exact answer, mixed number, decimal, and the working immediately — no button needed.GPA CalculatorEnter each course once, then compare its weighted GPA on 4.5, 4.3, and 4.0 scales side by side—without sending grades anywhere.Korea Annual Leave CalculatorCompare hire-date and fiscal-year leave side by side, then inspect any termination shortfall and unused-leave pay formula.Korea Hourly Wage CalculatorSee daily, weekly, and monthly pay with the weekly holiday allowance—and the exact reason it applies or does not.Korea Rent Conversion CalculatorConvert Korean deposits both ways, apply the 2026 statutory ceiling in the right contract context, and check a landlord’s quoted rent.Korea Salary CalculatorSee estimated 2026 Korean take-home pay and every deduction, including non-taxable pay and 80%, 100%, or 120% withholding.Korea Social Insurance CalculatorCalculate employee deductions and employer costs with both 2026 pension periods, benefit limits, and optional industry rates.Korea Unemployment Benefit CalculatorCheck the 2026 daily floor, ₩68,100 cap, benefit days, and basic eligibility—without entering a birth date.Korea Weekly Holiday PayCheck the 15-hour rule, attendance, weekly allowance, and monthly estimate from your real day-by-day schedule.Korean Severance Pay CalculatorUse your final-three-month wages to check a before-tax Korean severance estimate, average wage, and basic eligibility.Loan CalculatorCompare three repayment methods and see each payment split into principal and interest — instantly, without sending your figures anywhere.Percentage CalculatorAll four percentage calculations update as you type, with the formula behind each result — no button needed.Pyeong CalculatorConvert ㎡ and 평 instantly, then put exclusive and supply area side by side so a listing’s two pyeong figures do not get mixed up.Random Number GeneratorGenerate up to 10,000 secure random integers, with optional no-repeat draws, sorting, and one-click copy.Ratio CalculatorSimplify an aspect ratio, solve a proportion, or scale a named recipe in one live calculator — no calculate button needed.Scientific CalculatorTrig, logs, powers and more — type the whole expression or tap the keys, your choice.Tip CalculatorCalculate the tip and split the exact total without losing a cent or won — with country-aware starting rates.VAT CalculatorAdd VAT or work backward from an inclusive total with standard-rate presets, a custom rate, and the formula shown.