All tools
The full collection. New calculators are added regularly—if there's one you wish existed, drop us a line.
Western ↔ Japanese era
Convert any year between Gregorian and Reiwa, Heisei, Showa, Taisho, Meiji.
Japanese age (kazoedoshi)
Your traditional Japanese age, used for kanreki and certain rituals.
Clothing & shoe sizes (Japan ↔ EU/US)
Convert Japanese clothing, shoe and ring sizes to EU and US.
Is the JR Pass worth it?
Enter your route. We tell you if the pass beats individual tickets.
Tax-free shopping (5,000 ¥ rule)
See if your purchase clears the tax-free threshold and what you save.
Japan trip budget
Daily costs by city and travel style, in USD, EUR, GBP, AUD, MXN.
Japanese zodiac (eto)
Find your animal of the twelve earthly branches.
Japan net salary (gross → take-home)
Income tax, resident tax, pension, health insurance—done in one place.
Furusato nōzei (ふるさと納税) limit
How much you can donate this year and still get the full tax deduction.
Japan rent cost (move-in + total)
Reikin, shikikin, agency fees, kōshinryō—the real cost of renting in Japan.
Japan jet lag calculator
Flight time, time difference and a practical plan to adapt to Japan time fast.
Monthly commuter pass — worth it?
Compare IC tickets vs monthly pass for Tokyo and Yokohama routes. 2026 fares.
Takuhaibin luggage forwarding cost
Estimate the cost of forwarding your luggage between hotels and cities in Japan.
Cherry blossom timing by city
Enter your travel dates and city. Find out if you'll catch the cherry blossom peak.
Japan visa fee calculator (Oct 2026 reform)
Calculate your renewal or permanent residency fee before and after the October 2026 reform.
HSP points — fast-track to permanent residency
Calculate your Highly Skilled Professional points. See if you qualify for PR in 1 year (80 pts) or 3 years (70 pts).
Autumn foliage timing by city (momiji)
Enter your travel dates and city. Find out if you'll catch peak autumn foliage (見頃, migoro) in Japan.