Life & Calculator
6 tools
Calculators for age, dates, loans, BMI, percentages, world time, and everyday business/life math. Useful for quick estimates and checking formulas.
How to choose a tool
Start with the tool closest to your task, then use the related tools near the bottom of each page when the workflow continues. Each tool page includes features, usage steps, and FAQs so users can understand what the tool does before relying on the result.
Life & Calculator
Age & Date Calculator
Calculate age from birthdate, display Japanese era, and count days between dates.
Loan Repayment Simulator
Calculate monthly payments, total repayment, and interest from loan amount, rate, and term.
BMI Calculator
Calculate BMI and assessment from height and weight. Ideal weight included.
Notepad
Simple browser notepad. Auto-save and multiple notes supported.
Favicon Generator
Generate favicons from images or text.
パーセント計算
％割引・増減率・全体に対する割合などを一括で計算。