Japan Trip Math: calculators for your trip to Japan
Four free, fast calculators updated for Japan's 2026 changes. Every price and rule shows its official source and the date we checked it. Nothing you type leaves your device.
Calculators
- JR Pass Calculator (October 2026 prices)Is the Japan Rail Pass worth it for your route? Compare with regular JR tickets.
- Tax-Free Refund Calculator (from Nov 1, 2026)How much consumption tax you get back under the new airport refund method, and your deadline.
- Japan Trip Budget CalculatorHotel, food, transport and the ¥3,000 departure tax, with official average-spend benchmarks.
- Japan eSIM Data CalculatorEstimate how many GB you need for maps, social media, video and calls.
What changed in 2026
| Date | Change | Tool |
|---|---|---|
| Jul 1, 2026 | International Tourist Tax (departure tax) rose from ¥1,000 to ¥3,000 per departure. | Budget |
| Oct 1, 2026 | Japan Rail Pass prices rise (7-day Ordinary: ¥50,000 → ¥53,000). The official online site keeps the old price for a limited period. | JR Pass |
| Nov 1, 2026 | Tax-free shopping becomes a refund: you pay tax in the shop and get it back after a customs check when you leave Japan (within 90 days). | Tax refund |
Sources and methods: About & sources.
How we keep it accurate
- Prices and rules come from official pages (JR, Japan's National Tax Agency, Japan Tourism Agency). Each tool lists its sources and the check date.
- Where there is no official number (for example, how much data a map app uses), we say it is an estimate.
- All calculations run in your browser. No sign-up, no tracking cookies.