Home > About Us > Statistics

Statistics

Statistics by fiscal year are available at "Annual Report of the National Diet Library".

Please see "Finance" page for budget information.

The NDL in figures (Key statistics of FY 2024)

Buildings and storages (Approximate)

  Total site area Total floor space Total area of reading rooms Total storage space Storage capacity
Tokyo Main Library 30,000m2 148,000m2 19,000m2 78,000m2 12,000,000 volumes
Kansai-kan of the NDL 83,000m2 84,000m2 4,300m2 39,000m2 11,000,000 volumes
International Library of Children's Literature(ILCL) 7,700m2 13,000m2 2,100m2 3,100m2 1,050,000 volumes

Collections (domestic and foreign publications)

Total acquisitions Annual acquisition
Total 48,113,609 items Total 616,815 items
Books 12,469,225 items Books 167,602 items
Periodicals 13,966,749 items Periodicals 248,888 items
Newspapers 7,213,931 items Newspapers 158,488 items
Microforms 9,144,027 items Microforms 3,087 items
Video recordings 301,895 items Video recordings 6,798 items
Audio recordings 833,033 items Audio recordings 8,715 items
Machine-readable materials
(CD-ROMs, etc.)
196,197 items Machine-readable materials
(CD-ROMs, etc.)
6,250 items
Maps 604,738 items Maps 3,961 items
Musical scores 33,379 items Musical scores 788 items
Doctoral dissertations 603,010 items Doctoral dissertations 555 items
Manuscripts 476,975 items Manuscripts 10,106 items
Braille and large print 52,709 items Braille and large print 1372 items

Services

Services for the public
Reference services 604,011 cases
Reading services 1,722,239 items
Photoduplication services 906,900 cases
Remote photoduplication services 250,014 cases
On-site users 669,616 people
Tokyo Main Library 457,444 people
(1,651 per day on average)
Kansai-kan of the NDL 73,478 people
(265 per day on average)
ILCL 138,694 people
(492 per day on average)
Digital Library services
Visitors to our website 57,913,665 cases
Viewers of digitized materials on the NDL Digital Collections 45,623,011 cases
Viewers of contents on the Web Archiving Project 84,031,979 cases
Digitized materials available on the NDL Digital Collections Total 6,219,546 items
Number of materials available via the internet 2,013,800 items
Available with Digitized Contents Transmission Service 2,052,219 items
Available only at the NDL 2,153,527 items
Materials digitized by the NDL (Approximate) 4,460,000 items
Number of materials available via the internet 650,000 items
Available with Digitized Contents Transmission Service 2,040,000 items
Available only at the NDL 1,770,000 items
Online publications collected by the NDL (Approximate) Total 1,600,000 items
Number of materials available via the internet 1,360,000 items
Available only at the NDL 250,000 items
Number of captures (Web Archiving Project) 277,921 items
Services for the Diet
Research on request 32,685 cases
Research on national policy issues 307 cases
Services for the executive and judicial branches of the government
Research and reference 341 cases
Loan services 3,033 items
Services for Libraries
Reference services 2,861 cases
Loan services 11,439 items
Libraries participating in the Collaborative Reference Database 943 libraries

To the head of this page