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Calculators

A wide range of calculators for everyday life and business — BMI, date calculations, tax simulations, unit conversions, and more. Calculations are based on Japanese tax and social insurance systems. Perform complex calculations easily in your browser and get instant results. Includes 177 tools.

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Try thisCalculatorsChildcare CostEstimate Japanese childcare fees from income and other details.Open tool

Trig Calcsin, cos, tan from an angle, angles from a value, and right-triangle sides — with exact values and a unit circle Travel TimeCalculate travel time from distance and speed (preset speeds & reverse calculation)

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Money

💰 Tax Loss Harvest

Unit Price Compare

💰 iDeCo Tax Calc

💰 Present Value

💰 Salary Convert

💰 Inheritance Tax

💰 Markup Calc

💰 Future Value

💰 Wedding Budget

💰 Currency Convert

Stamp Duty Calc

💰 Loan Affordability

💰 Points vs Discount

💰 Loan Compare

💰 Furusato Tax Calculator

💰 Oshi Trip Cost

💰 Social Insurance

💰 Discount Calc

💰 Savings Goal

💰 Interest Rate Convert

💰 Split Bill

💰 Depreciation Calc

💰 Wallpaper Calc

💰 Withholding Tax

💰 Simple Interest

💰 Medical Deduction

💰 Resident Tax

💰 Gift Tax Calc

💰 Savings Calc

💰 Sub Cost Audit

Withholding Tax

💰 Inheritance Calc

💰 Lottery Probability

💰 Margin Calc

💰 Break-Even Calc

Unemployment Calc

💰 Electricity Cost

💰 Loan Repayment

💰 Moving Cost

💰 Appliance Cost

💰 Education Cost

💰 Salary Calc

💰 Mortgage Calc

💰 Housing Loan Tax

💰 Rent Afford

💰 Dividend Calc

💰 RE Yield Calc

💰 Multi Product

💰 Retirement Calc

Date & Calendar

📅 Countdown Calc

📅 Rokuyo Calendar

📅 Days Between

📅 Weekday Calc

📅 Japanese Era Convert

📅 Leap Year Check

📅 Working Days

📅 Elapsed Time

📅 Zodiac Calc

Daily Life

🏠 Paint Calc

🏠 Reading Time Calculator

Probability

Probability Calc

Gacha Probability

🎲 Coin Flip Prob

🎲 Dice Probability