🛠️ 無料オンラインツール
計算機・変換ツール・ガイド — 登録不要ですぐ使えます
72 tools • 6 languages • 100% free
🧳 旅行
Tax Free Calculator
Calculate your tax refund for Japan, Europe, Thailand and more.
Japan Mapcode Finder
Tap the map or search to get rental-car GPS mapcodes anywhere in Japan.
Okinawa Mapcode List
Rental-car GPS mapcodes for Okinawa sights, beaches and hotels.
Hokkaido Mapcode List
Rental-car GPS mapcodes for Hokkaido sights, onsen and hotels.
Kyushu Mapcode List
Rental-car GPS mapcodes for Kyushu sights, onsen and shopping.
Central Japan Mapcode List
Rental-car GPS mapcodes for Kanazawa, Takayama, Mt. Fuji, Hakone and Ise.
IC Card Guide
Compare Suica, ICOCA, Pasmo and other Asian transit cards.
Voltage & Plug Guide
Check voltage, frequency and plug types by country.
日本の住所ガイド
日本の住所構造、都道府県、郵便番号ガイド。
韓国鉄道ガイド
KTX・SRTの料金、所要時間、駅情報を比較。
💻 開発者
JSON Formatter & Validator
Format, minify, and validate JSON with tree view.
Base64 Encoder/Decoder
Encode and decode Base64 text and images.
URL Encoder/Decoder
Encode, decode URLs and parse query strings.
JWT Decoder
Decode JWT tokens, check expiration, and view claims.
Regex Tester
Test regular expressions with real-time highlighting.
Diff Checker
Compare two texts side-by-side with character-level diff.
UUID Generator
Generate UUID v4, v7, ULID with bulk and validation.
Hash Generator
Generate MD5, SHA-256, SHA-512 hashes with HMAC support.
Color Converter
Convert colors between HEX, RGB, HSL, CMYK with WCAG contrast check.
Timestamp Converter
Convert Unix timestamps to dates with timezone support.