Observed arrival · 2026-10-13
くらしの便利ツール: 208 small answers for daily life
A Japanese directory of free calculators and helpers for dates, pay and taxes, household decisions, text, health, and paperwork.
○Open
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$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Japanese users handling everyday calculations
- Worth noticing
- Its business-day calculator accounts for substitute holidays and year-end holidays, and includes a holiday list.
Field notes
The index divides its 208 listings into nine categories, with detailed entries for tasks such as calculating paid leave from a hire date and weekly workdays. Several calculators are keyed to Japanese conventions, including era-year conversion, school-year lookups, and calendars for rokuyō and lucky days. The homepage says inputs are not transmitted, but cautions that results are estimates and accuracy is not guaranteed.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue