Tools
Everyday tools
Tools for everyday calculations such as bill splitting, tax, discounts, BMI, wages, packing lists, cooking measures, and room area.
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All tools
Split bill
Split Bill Calculator
Split a total amount by the number of people and round each share by 1, 10, or 100 yen.
Tax
Japan Consumption Tax Calculator (8% / 10%)
Calculate Japanese consumption tax, before-tax prices, after-tax prices, and tax amounts for Japan tax rates of 8% and 10%.
BMI
BMI Calculator
Calculate your BMI (Body Mass Index) and ideal weight from your height and weight, and see your weight category.
Discount
Discount Calculator
Calculate the final price and your savings from the original price and discount rate (%) or amount.
Packing list
Packing Checklist Maker
Create a starter packing checklist for travel, business trips, hospital stays, or going out with kids, then add items and copy the list.
Measure converter
Cooking Measure Converter
Convert between tablespoons, teaspoons, cups, and grams for common ingredients like water, sugar, salt, and soy sauce.
Area Converter
Tsubo to Square Meter / Tatami Area Converter
Convert between square meters (m²), tsubo, and tatami mats. Check tsubo to sqm, sqm to tsubo, and how many square meters 6 tatami is for Japanese real estate sizes.
Area Table
Tsubo / Tatami Area Reference Table
A quick reference table for tatami mats, square meters (m²), and tsubo. Use it to scan common Japanese room and land sizes at a glance.
Hourly Wage
Hourly Wage Converter
Convert between hourly wage, monthly salary, and yearly salary estimates using work hours and working days.