Utilities calculators
English utility tools focus on browser-based tasks that work across countries: text measurement, percentage math, encoding, passwords, colors, and other everyday productivity workflows.
34 calculators
- Wage ConverterWage Converter helps estimate salary, deductions, payroll cost, and take-home pay assumptions in English.
- Water Bill CalculatorWater Bill Calculator helps Estimate utility or service bills from usage, base charge, unit price, and months.
- Percent CalculatorCalculate percentages, percentage change, discounts, increases, decreases, and ratios in one focused tool.
- Unit ConverterConvert length, weight, temperature, volume, time, data, speed, and energy units in your browser.
- Image Color ExtractorExtract dominant colors, HEX values, and palettes from an uploaded image.
- Annual Leave CalculatorAnnual Leave Calculator helps estimate Korea-related leave income, unpaid time, and return-to-work cash flow in English.
- Date CalculatorCalculate date differences, add or subtract time, and check countdowns between calendar dates.
- Salary CalculatorSalary Calculator helps estimate Korea-related salary, payroll, or wage tax pressure from annual pay and deductions.
- VAT CalculatorVAT Calculator helps estimate Korea-related VAT, input tax, refund, or prepayment scenarios in English.
- Working Hours CalculatorWorking Hours Calculator helps estimate wage, overtime, allowance, arrears, or pay-period scenarios in English.
- BMI CalculatorCalculate body mass index, healthy weight range, BMR, daily calories, and estimated body fat.
- Income Tax CalculatorIncome Tax Calculator helps estimate Korea-related income tax from income, deductions, rates, and credits in English.
- Salary Income Tax CalculatorSalary Income Tax Calculator helps estimate Korea-related salary, payroll, or wage tax pressure from annual pay and deductions.
- Business Income Tax CalculatorBusiness Income Tax Calculator helps model Korea-related business income, expenses, tax rate, and credits in English.
- Capital Gains Income Tax CalculatorCapital Gains Income Tax Calculator helps estimate Korea-related investment or financial income tax from gains, cost basis, and rates.
- Interest and Dividend Tax CalculatorInterest and Dividend Tax Calculator helps estimate Korea-related investment or financial income tax from gains, cost basis, and rates.
- Pension Income Tax CalculatorPension Income Tax Calculator helps estimate Korea-related income tax from income, deductions, rates, and credits in English.
- Comprehensive Income Tax CalculatorComprehensive Income Tax Calculator helps estimate Korea-related income tax from income, deductions, rates, and credits in English.
- Margin Rate CalculatorCalculate profit margin, markup, selling price, cost, and gross profit for products or services.
- Weekly Holiday Allowance CalculatorWeekly Holiday Allowance Calculator helps estimate wage, overtime, allowance, arrears, or pay-period scenarios in English.
- Character Count ToolCount characters, words, lines, UTF-8 bytes, and compare two text versions directly in your browser.
- Electricity Bill CalculatorElectricity Bill Calculator helps Estimate utility or service bills from usage, base charge, unit price, and months.
- Korea Business Electricity Contract and Time-of-Use Tariff ComparisonCompare eligible Korean general-service contracts on the same twelve months of usage, including 2026 temporary lower-tariff billing and switching-cost recovery.
- Telecom Cost CalculatorTelecom Cost Calculator helps Estimate utility or service bills from usage, base charge, unit price, and months.
- Internet & IPTV Cancellation Penalty vs Switching BenefitsCompare switching now, waiting for each contract to expire and renewing over the same period, using Korean carrier repayment rules, actual quotes, gifts and lost bundle discounts.
- Self-Purchase MVNO vs Carrier CalculatorSelf-Purchase MVNO vs Carrier Calculator helps Compare two everyday planning options using upfront cost, recurring cost, and time horizon assumptions.
- Heating Cost CalculatorHeating Cost Calculator helps Estimate utility or service bills from usage, base charge, unit price, and months.
- Gas Bill CalculatorGas Bill Calculator helps Estimate utility or service bills from usage, base charge, unit price, and months.
- QR Code GeneratorGenerate QR codes for URLs, text, contact details, Wi-Fi, and simple sharing use cases.
- Color Palette GeneratorCreate color palettes, HEX combinations, complementary colors, and design-ready swatches.
- JSON FormatterFormat, validate, minify, and inspect JSON directly in your browser.
- Regex TesterTest JavaScript regular expressions, flags, match positions, capture groups, and highlighted results.
- Password GeneratorGenerate random passwords with adjustable length, character groups, and estimated entropy.
- Base64 Encoder and DecoderEncode and decode UTF-8 text with standard or URL-safe Base64 output.
How to use utilities calculators
Mowatool calculators run in the browser without sign-up or installation. Choose a calculator, adjust the assumptions, and compare the results before making a decision. English pages are published gradually, and each completed page keeps its Korean counterpart linked through canonical and hreflang metadata.