Comparison of Dewey and Library of Congress subject classification

This is a conversion chart showing how the Dewey Decimal and Library of Congress Classification systems organize resources by concept, in part for the purpose of assigning call numbers. These two systems account for over 95% of the classification in United States libraries, and are used widely around the world.

The chart includes all ninety-nine second level (two-digit) DDC classes (040 is not assigned), and should include all second level (two-digit) LCC classes. Where a class in one system maps to several classes in other system, it will be listed multiple times (e.g. DDC class 551).

Additional information on these classification plans is available at:

Dewey Decimal Classification—high level categories, with links to lower level categories
Library of Congress Classification—high level categories

Chart

DDC	LCC	Description
000	QA71-90	Computer science, knowledge and general works
001	A	knowledge
002	Z4-659	The book
003		Systems
004	QA(subrange)	Data processing & computer science
005	QA(subrange)	Computer programming, programs & data
006	QA(subrange)	Special computer methods
010	Z1001–8999	Bibliography
020	Z665–718.8	Library & information sciences
030	AE	General encyclopedic works
050	AI	General serials & their indexes
060	AM111–160	General organization & museology
070	AN	News media
070	PN4699–5650	Journalism
070	Z278–549	Publishing
080	AC	General collections
090	Z105–115.5	Manuscripts
090	Z1019–1033	Rare books
100	B	Psychology & Philosophy
111	BD300–450	Ontology
115	BD493–701	Time
120	BD143–237	Epistemology
120	BD?	Causation
120	BD?	Humankind
124	BD493–701	Teleology
130	BF1404–2055	Paranormal phenomena / Occult sciences
150	BF	Psychology
152	HM1041–1101	Perception
152	QH?	Movement
152	BF511–593	Emotions
155	BF712–724	Developmental psychology
160	BC	Logic
170	BJ	Ethics (moral philosophy)
180	B108–708	Classic philosophy
181	B850–5739	Oriental philosophy
182	B108–708	Ancient philosophy
183	B108–708	Sophists & Socratic philosophies
185	B108–708	Aristotelian philosophy
186	B108–708	Skeptic & Neoplatonic philosophies
187	B108–708	Epicurean philosophy
188	B108–708	Stoic philosophy
189	B720–765	Medieval Western philosophy
190	B790–5802	Modern Western philosophy
200	BL	Religion
210	BL175–265	Natural theology
212	BL205–216	Nature of God
220	BS	Bible
221	BS701–1830	Old Testament
225	BS1901–2970	New Testament
226	BS2547–2970?	Gospels & Acts of the Apostles
227	BS2640–2765.6	Epistles
228	BS2547–2970?	Revelation
229	BS2547–2970?	Apocrypha
230	BR	Christian theology
232	BT198–590	Jesus & his family
236	BT819–891	Eschatology
250	BR?	Christian orders & local church
260	BR?	Christian social theology
270	BR140–1510	Christian church history
280	BX?	List of Christian denominations
282	BX800–4795	Roman Catholic Church
283	BX5001–6093	Anglican churches (English and Protestant Episcopal)
284	BX?	Protestants of Continental origin
286	BX6201–6495, BX7301–7343, BX6101–6193	Baptist, Disciples of Christ, Adventist
287	BX8201–8495	Methodist & related churches
289	BX7601–7795, BX7801–7843, BX8101–8144, BX 8799–8809, BX9751–9793, BX9998	Other denominations and sects
290	BL660–2680	Non-Christian religion
292	BL700–820	Greek mythology and Roman mythology
295	BL1500–1590	Zoroastrianism
296	BM	Judaism
297	BP	Islam, Bábísm, Baháʼí Faith
300	H	Social sciences
301	HM	Sociology
301	GN	Anthropology
310	HA154–473	General statistics (of parts of the world)
320	J	Political science
327	JZ	International relations
330	HB	Economics
331	HD4801–8943	Labor economics
332	HG	Financial economics
333	HD101–1399	Economics of land
333	HD9502	Economics of energy
336	HJ	Public finance
339	HB?	Macroeconomics
340	K	Law
341	KZ	International law
345	K5000–5582	Criminal law
346	KB479	Private law
347	K2201–2385	Civil procedure
347	K2100–2385	Courts
350	JF	Public administration
352	JS	City government
353	JK1–9593	U.S. federal government
353	JK2403–9593	U.S. state governments
355	U	Military Science
360	H	Social services; association
361	HN	General social problems & services
362	HN	Social welfare problems & services
363	HN	Other social problems & services
364	HV6001–7220	Criminology
365	HV8301–9920	Penal & related institutions
366	HS	Association
367	HS	General clubs
368	K1960–1973	(Social) Insurance
370	L	Education
371	LB3011–3095	School management
371	LC3950–4806.5	Special education
372	LB1501–1602	Elementary education
373	LB1603–1699	Secondary education
374	LC5201–6661	Adult education
376	LC1401–2572	Education of women
377	LC321–951	Schools & religion
378	LB2300–2430	Higher education
380	HF	Commerce, communications, transport
382	HF1	International commerce (Foreign trade)
383	HE6000–7500	Postal communications
384	HE	Communications
384	HE7601–8700.9	Telecommunication
385	HE1001–5600	Railways
386	HE380–560	Inland waterway
386	HE5751–5870	Ferry transportation
387	HE380–971	Water transportation
387	HE9761–9900	Air transportation
387	TL787–4050	Space transportation
388	HE	Transport
390	GT	Customs
390	BJ1801–2195	Etiquette
390	GR	Folklore
391	GT500–2370	Costume and Personal Appearance
392	GT2400–3390.5	Customs of life cycle & private life
393	GT2400–3390.5	Customs of Death
395	BJ1801–2195	Etiquette
398	GR	Folklore
400	P	Language
410	P101–410	Linguistics
411	P327–327.5	Writing systems
412	P321–324.5	Etymology
414	P?	Phonology phonetics
415	P201–299	Grammar
419	PM8001–8995	Sign language
420	PE	English language
430	PD	Germanic languages
440	PC2001–3761	French language
449	PC3201–3366	Provençal
449	PC3801–3976	Catalan
450	PC1001–1977	Italian language
459	PC601–872	Romanian language
459	PC901–986	Rhaeto–Romanic language
460	PC4001–4977	Spanish language
469	PC5001–5498	Portuguese language
470	PA2001–2915	Latin language
480	PA201–899	Greek language
490	P501–769	Indo-European Languages
492	PJ991–995	Afro-Asiatic languages
494	PL1–481	Altaic languages
495	PL3521–4001	Sino-Tibetan languages
496	PL8000–8844	African languages
497	PM101–2711	North American languages (Native American languages)
498	PM3001–4566	Central American Languages (Native American languages)
498	PM5001–7356	South American Languages (Native American languages)
500	Q	Natural sciences & mathematics
510	QA	Mathematics
512	QA150–272	Algebra
513	QA101–145	Arithmetic
514	QA612–699	Topology
515	QA299–433	Analysis / Calculus
516	QA440–611	Geometry (excluding Topology)
519	QA273–299	Probability, Statistics, Numerical analysis
520	QB	Astronomy
521	QB349–421	Celestial mechanics
530	QC	Physics
531	QC120–168.85	Classical mechanics; Solid mechanics
532	QC120–168.85	Fluid mechanics; Liquid mechanics
533	QC120–168.85	Gas mechanics
534	QC221–246	Sound & related vibrations
535	QC350–467	Light & paraphotic phenomena
536	QC251–338.5	Heat
537	QC501–721	Electricity & electronics
538	QC750–766	Magnetism
539	QC770–798	Modern physics
540	QD	Chemistry & allied sciences
541	QD450–801	Physical & theoretical chemistry
542	QD1–65	Techniques, equipment, materials
543	QD71–142	Analytical chemistry
544	QD71–142	Qualitative analysis
545	QD71–142	Quantitative analysis
546	QD146–197	Inorganic chemistry
547	QD241–441	Organic chemistry
548	QD0001–0999	Crystallography
549	QE351–399.2	Mineralogy
550	QE	Earth sciences
551	QE	Geology
551	GB651–2998	Hydrology
551	QC851–999	Meteorology
552	QE420–499	Petrology
553	QE?	Economic geology
560	QE701–760	Paleontology
560	QE7601–899	Paleozoology
570	QH301–705.5	Life sciences – Biology
572	QD415–436	Biochemistry
572	GN	Anthropology
573	GN49–298	Physical anthropology
574	QH301–705.5	Biology
575	QH359–425	Evolution
575	QH426–470	Genetics
576	QH573–671	Microbiology
577	QH540–549.5	Ecology
578	QH201–278.5	Microscopy in biology
579	QH1–199.5	Collection and preservation
580	QK	Botanical sciences
581	QK	Botany
582	QK474.8–495	Spermatophyta (Seed-bearing plants)
585	QK494–494.5	Gymnospermae (Pinophyta)
586	QK504–638	Cryptogamia (Seedless plants)
590	QL	Animals
591	QL1–355	Zoology
592	QL360–599.82	Invertebrates
593	QL360–599.82	Protozoa, Echinodermata, related phyla
594	QL360–599.82	Mollusca & Molluscoidea
595	QL360–599.82	Other invertebrates
596	QL605–739.8	Vertebrata (Craniata, Vertebrates)
597	QL614–639.8	Fishes
597	QL640–669.3	Reptiles and amphibians
598	QL671–699	Aves (Birds)
599	QL700–739.8	Mammalia (Mammals)
600	T	Technology (Applied sciences)
607	T61–173	Education
607	T175–178	Research
608	T201–342	Invention & patents
608	Q	Invention & patents
610	R	Medicine
611	QM	Human anatomy
611	QH573–671	Cytology
611	QM550–577.8	Histology
612	QP	Human physiology
615	RM	Pharmacology & Therapeutics
617	RD	Surgery & Related Topics
618	RG	Gynecology
618	R	Other medical specialties
619	R735–854	Experimental medicine
620	TA	Engineering & allied operations
621	TJ	Mechanical engineering
621	QC	Applied physics
622	TN	Mining & related operations
623	UG1–620	Military engineering
623	VM	Nautical engineering
624	TA	Civil engineering
	TG	Bridge Engineering
625	TF	Engineering of railways
625	TE	Engineering of highways
627	TC1–978	Hydraulic engineering
628	TD	Sanitary & engineering
628	TD159–168	Municipal engineering
629	T	Other branches of Engineering
	TK	Electrical Engineering, electronics, nuclear engineering
	TL	Motor vehicles, Aeronautics, Astronautix
	TP	Chemical Technology
630	S	Agriculture
631	S1–972	Techniques, equipment, materials
632	SB599–990.5	Plant injuries, diseases, pests
633	SB317.5–319.864	Horticulture
634	SB354–402	Fruits
634	SD	Forestry
634	SB169–172.5	Orchards
636	SF	Animal husbandry
637	SF250.5–275	Processing dairy & related products
638	SF518–561	Insect culture
639	SK	Hunting, fishing
639	S604.5–604.64	Conservation
640	TX	Home economics
650	HD28–70	Management & auxiliary services
653	Z53–102	Shorthand
657	HF5601–5689	Accounting
658	HD28–70	General management
659	HF5801–6182	Advertising
660	TP155–156	Chemical engineering
670	HD9720–9975	Manufacturing
680	TT	Handicrafts
690	TH	Buildings
700	N	Arts
708	N400–3990	Museums
710	SB469–476	Landscape art
720	NA	Architecture
730	NB	Plastic arts, Sculpture
736	NB0001–1952	Carving & carvings
738	NB0001–1952	Ceramic arts
739	NB0001–1952	Metalwork
740	NC	Drawing
740	NK	Decorative arts
746	NK8800–9505.5	Textile arts
748	NK5100–5440	Glass
749	NK2200–2750	Furniture & accessories
750	ND	Painting
760	NE	Graphic arts, Printmaking & prints
761	NE1330–1352	Relief processes (Block printing)
763	NE2250–2570	Lithography
764	NE2236–2240.6	Chromolithography & serigraphy
765	NE1400–1879	Metal engraving
767	NE1940–2232.5	Etching & drypoint
770	TR	Photography & photographs
780	M	Music
781	MT	General principles & musical forms
782	M1495–5000	Vocal music
783	M1528–1529.5	Music for solo voice
784	M1000–1075	Orchestras, ensembles
785	M1000–1075	Ensembles with one instrument per part
786	MT180–255	Keyboard instrument
787	MT259–338	String instruments
788	MT339–533	Wind instruments
790	PN1560–1590	Performing arts
790	GV	Recreation
792	PN2000–3307	Theater and other stage presentations
793	GV1221–1469.63	Indoor games & amusements
795	GV1301–1311	Games of chance
796	GV557–1198.995	Sport
797	GV750–770.27	Air sports
797	GV770.3–840	Aquatic sports
799	SK	Fishing, Hunting, Shooting
800	P	Literature & rhetoric
810	PS	American literature
820	PR	English literature
830	PT1–4897	German literature
840	PQ0001–3999	French literature
850	PQ4001–5999	Italian literature
860	PQ6001–8929	Spanish literature
869	PQ9000–9999	Portuguese literature
870	PA6001–8595	Latin literature
880	PA3050–5660	Greek literature
890	PN	World literature
900	G	Geography
900	D	History
910	G	Geography
911	G141	Historical geography
912	GA	Graphic representations of earth
914	G1791–2196	Geography of Europe
915	G2200–2444	Geography of Asia
916	G2445–2739	Geography of Africa
917	G1105–1692	Geography of North America
918	G1700–1779	Geography of South America
919	G2740–2799	Geography of Oceania
920	CT	Biography
920	CS	Genealogy
920	CR4480–4485	Insignia
930	D51–90	History of ancient world
938	DE	History of the Greco-Roman World
940	DAW1031–1051	History of Europe
942	DA	History of Britain
943	DD	History of Germany
943.6	DB	History of Austria and Liechtenstein
943.9	DB	History of Hungary
944	DC	History of France
945	DG	History of Italy
946	DP	History of the Iberian Peninsula
947	DJK	History of Eastern Europe
947	DK	History of Russia, Soviet Union, and former Soviet republics.
948	DL	History of Northern Europe; Scandinavia
949.2	DH	History of the Netherlands
949.3	DH	History of Belgium
949.4	DQ	History of Switzerland
949.5	DF	History of Greece
949.6	DR	History of the Balkan Peninsula
950	DS	General history of Asia and Far East
951	DS701–799.9	History of China
952	DS801–897	History of Japan
953	DS201–248	History of Arabian Peninsula (History of Saudi Arabia, etc.)
954	DS401–486.8	History of India
955	DS251–326	History of Iran (Persia)
960	DT	History of Africa
961	DT211–239	History of Libya
961	DT241–269	History of Tunisia
962	DT154.1–159.9	History of Sudan
962	DT43–154	History of Egypt
963	DT371–390	History of Ethiopia (Abyssinia)
963	DT391–398	History of Eritrea
965	DT271–299	History of Algeria
966	DT470–671	History of West Africa & offshore islands
967	DT?	History of Central Africa & offshore islands
968	DT1701–2405	History of South Africa
969	DS349.8–349.9	History of South Indian Ocean islands
970	F	History of North America
971	F1001–1145.2	History of Canada
972	F1421–1440	History of Central America
972	F1201–1392	History of Mexico
973	E	History of United States
980	F2201–3799	History of South America
981	F2501–2659	History of Brazil
982	F2801–3021	History of Argentina
983	F3051–3285	History of Chile
984	F3301–3359	History of Bolivia
985	F3401–3619	History of Peru
987	F2301–2349	History of Venezuela
988	F2351–2471	History of Guiana
990	DU	History of Oceania
993	DU400–430	History of New Zealand
994	DU80–398	History of Australia
995	DU490	History of Melanesia
995	DU739–747	History of New Guinea
803	AG	Dictionaries and other general reference works
069	AM	Museums. Collectors and collecting
050	AP	Periodicals
060–068	AS	Academies and learned societies
030	AY	Yearbooks. Almanacs. Directories
001	AZ	History of scholarship and learning. The humanities
110–140	BD	Speculative philosophy
111.85	BH	Aesthetics
200	BL	Mythology
230	BT	Doctrinal Theology
240–260	BV	Practical Theology
280	BX	Christian Denominations
	C	Auxiliary Sciences of History (General)
909	CB	History of Civilization
930.1	CC	Archaeology
929.1 – 929.3	CD	Diplomatics. Archives. Seals
529	CE	Technical Chronology. Calendar
737	CJ	Numismatics
411.7	CN	Inscriptions. Epigraphy
929.6	CR	Heraldry
909.0491497	DX	History of Romanies
551.4	GB	Physical geography
551.46	GC	Oceanography
333.7	GE	Environmental Sciences
304	GF	Human ecology. Anthropogeography
310	HA	Social science statistics
330.9	HC	Economic history and conditions
331–338	HD	Industries. Land use. Labor
649.1–641.7	HQ	The family. Marriage. Women
	HT	Communities. Classes. Races
364	HV	Social pathology. Social and public welfare. Criminology
335	HX	Socialism. Communism. Anarchism
	J	General legislative and executive papers
320	JA	Political science (General)
320.5	JC	Political theory
	JJ	Political institutions and public administration (North America)
320.973	JK	Political institutions and public administration (United States)
320.971	JL	Political institutions and public administration (Canada, Latin America, etc.)
320.94	JN	Political institutions and public administration (Europe)
320.95–320.969	JQ	Political institutions and public administration (Asia, Africa, Australia, Pacific Area, etc.)
	JV	Colonies and colonization. Emigration and immigration. International migration
	KB	Religious law in general. Comparative religious law. Jurisprudence
	KD	Law of the United Kingdom, Ireland, America. North America
340.971	KE	Law of Canada
340.973	KF	Law of United States
	KG	Law of Latin America – Mexico and Central America/West Indies. Caribbean area
	KH	Law of South America
340.94	KJ–KK	Law of Europe
340.95–340.969	KL–KW	Law of Asia and Eurasia, Africa, Pacific Area, and Antarctica
370.9	LA	History of education
370.1	LB	Theory and practice of education
	LC	Special aspects of education
378.73–378.79	LD	Individual educational institutions – United States
378.8	LE	Individual educational institutions – America (except United States)
378.4	LF	Individual educational institutions – Europe
378.5–378.6	LG	Individual educational institutions – Asia, Africa, Indian Ocean islands, Australia, New Zealand, Pacific islands
378	LH	College and school magazines and papers
	LJ	Student fraternities and societies, United States
	LT	Textbooks

References

Map Dewey Decimal vs. Library of Congress
Map Library of Congress vs. Dewey Decimal
Library of Congress Classification Outline
Cataloging Distribution Service – Source of Library of Congress Classification schedules
Library of Congress Classification Outline – Class A (PDF)
Library of Congress Classification Outline – Class B (PDF)
Library of Congress Classification Outline – Class C (PDF)
Library of Congress Classification Outline – Class D (PDF)
Library of Congress Classification Outline – Classes E and F (PDF)
Library of Congress Classification Outline – Class G (PDF)
Library of Congress Classification Outline – Class H (PDF)
Library of Congress Classification Outline – Class J (PDF)
Library of Congress Classification Outline – Class K (PDF)
Library of Congress Classification Outline – Class L (PDF)
Library of Congress Classification Outline – Class M (PDF)
Library of Congress Classification Outline – Class N (PDF)
Library of Congress Classification Outline – Class P (PDF)
Library of Congress Classification Outline – Class Q (PDF)
Library of Congress Classification Outline – Class R (PDF)
Library of Congress Classification Outline – Class S (PDF)
Library of Congress Classification Outline – Class T (PDF)
Library of Congress Classification Outline – Class U (PDF)
Library of Congress Classification Outline – Class V (PDF)
Library of Congress Classification Outline – Class Z (PDF)
Library of Congress Subject Classifications in the Mathematics Statistics Library (University of California, Berkeley)

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