Japanese History Tools
16 toolsFree tools for studying and exploring Japanese history. Most tool interfaces are in Japanese, but many are usable with basic navigation.
History Learning Tools
Quizzes, lookups, and references for Japanese history study.
Causal Scenario Quiz · 3 source-checked questions
Learn cause-and-effect through historical scenarios
Practice three Edo-period scenarios with an explanation for each answer and links to historical sources.
English UI
Era Name Calculator
Convert between Japanese eras and Western years
Instantly convert Meiji, Taishō, Shōwa, Heisei, and Reiwa era years to Western calendar dates and back.
English UI
Historical Figure Search
Look up samurai and historical figures
Search English Wikipedia summaries for figures like Oda Nobunaga and Tokugawa Ieyasu.
English UI
Kanji Lookup
Search kanji for names and place names
Look up readings, radicals, stroke counts, and meanings instantly.
English UI
Samurai Card Gacha
Draw a random historical figure card
Pull a random card to reveal a samurai and your fortune. Resets daily for repeated fun.
Japanese UI
Era × World History Game
Compare Japanese and world events by year
"What happened in 1600 around the world?" View parallel timelines in Japanese and English.
Japanese UI
Cross-History Quiz
World history trivia meets Japanese history
Combines Open Trivia DB world history questions with Japanese history data.
Japanese UI
Relationship Visualizer
Graph connections between historical figures
Uses Wikidata to display network graphs of relationships between people and events.
Japanese UI
Historical Source Viewer
Read primary sources from Aozora Bunko & NDL
View original texts from classic literature and military records, with cross-search of National Diet Library materials.
Japanese UI
Furigana Tool
Add reading aids to Japanese text
Morphological analysis-based furigana for names, place names, and general text.
Japanese UI
General Utility Tools
Handy tools for holidays, weather, text, gaming data, and more.
Holiday Checker
Look up public holidays by year and country
View holiday lists for Japan, US, and other countries. Shows long weekends of 3+ days.
English UI
Past Weather Lookup
Search historical weather data by date and city
Temperature, precipitation, and wind speed from 1940 to present. Check the weather on any past date.
English UI
Character Counter
Count characters for X/Twitter posts
Standard count, no-whitespace count, URL count, and X weighted character count with limit indicators.
English UI
Deck-Building Game Catalog
Compare digital and board deck-building games
Side-by-side comparison of deck-building games. Real-time Steam data and BoardGameGeek (BGG) reference info.
English UI
Indie Game Market Dashboard
Steam data for market research
Review counts, ratings, and concurrent players for deck-builders, roguelikes, and related genres.
English UI
Real-Time Player Stats
Compare concurrent players and review scores
Live concurrent player counts and review ratings for deck-builder and roguelike titles.
English UI