Calendar

「換歴」暦変換ツール

元号西暦対照表: covers Meiji, Taisho, Showa era.

国会図書館「日本の暦」

The Lunar Calendar in Japan　

By Steve Renshaw and Saori Ihara

Dictionary

Weblio 英和・和英辞典 including Kenkyusha dictionaries.

Denshi Jisho: Online Japanese Dictionary

Kotobank : search from 99 dictionaries and encyclopedia at once.

辞典横断検索 Metapedia : the site allows to search 551 reference books at once.

Jim Breen's Online Japanese Dictionary Service

語源由来辞典　Japanese Etymological dictionary

古事類苑　Koji Ruien　(1933) digitized by Internet Archive.

古事類苑全文データベース　 Koji Ruien full-text database About 10 % of 67,000 pages are digitized in this on-going project. 　

電子くずし字字典

Digital Dictionary of Buddhism 電子佛教辭典 ID
Edited by Charles Muller, the dictionary provides English definitions for Buddhist terms in a range of languages, including Chinese, Japanese, Korean, Pali, Sanskrit, and Tibetan, as well as pronunciations. It includes A Dictionary of Chinese Buddhist Terms : with Sanskrit and English equivalents and a Sanskrit-Pali index, compiled by William Edward Soothill and Lewis Hodous.

Japanese Garden Dictionary

JAANUS: Online dictionary of Japanese Architecture and Art Historical Teminology Compiled by Dr. Mary Neighbour Parent