Numbers in Welsh

This table shows the cardinal and ordinal numbers in Welsh with vigesimal and decimal numbers and notes. The decimal system is widely used, although not so much for dates and ages.

Key to abbreviations: m = masculine, f = feminine

If any of the numbers are links, you can hear a recording by clicking on them. If you can provide recordings, please contact me.

Cardinal		Ordinal
0	sero/dim
1	un	1af	cynta(f)
2	dau (m) dwy (f)	2ail	ail
3	tri (m) tair (f)	3ydd	trydydd (m) trydedd (f)
4	pedwar (m) pedair (f)	4ydd	pedwerydd (m) pedwaredd (f)
5	pum(p)	5ed	pumed
6	chwe(ch)	6ed	chweched
7	saith	7fed	seithfed
8	wyth	8fed	wythfed
9	naw	9fed	nawfed
10	deg	10fed	degfed
11	un ar ddeg un deg un	11eg	unfed ar ddeg
12	deuddeg un deg dau	12fed	deuddegfed
13	tri ar ddeg un deg tri	13eg	trydydd ar ddeg
14	pedwar ar ddeg un deg pedwar	14eg	pedwerydd ar ddeg
15	pymtheg un deg pump	15fed	pymthegfed
16	un ar bymtheg un deg chwech	16eg	unfed ar bymtheg
17	dau ar bymtheg un deg saith	17eg	ail ar bymtheg
18	deunaw un deg wyth	18fed	deunawfed
19	pedwar ar bymtheg un deg nau	19eg	pedwerydd ar bymtheg
20	ugain dau ddeg	20fed	ugeinfed
21	un ar hugain dau ddeg un	21ain	unfed ar hugain
22	dau ar hugain dau ddeg dau	22ain	ail ar hugain
23	tri ar hugain dau ddeg tri	23ain	trydydd ar hugain
24	pedwar ar hugain dau ddeg pedwar	24ain	pedwerydd ar hugain
25	pump ar hugain dau ddeg pump	25ain	pumed ar hugain
26	chwech ar hugain dau ddeg chwech	26ain	chweched ar hugain
27	saith ar hugain dau ddeg saith	27ain	seithfed ar hugain
28	wyth ar hugain dau ddeg wyth	28ain	wythfed ar hugain
29	naw ar hugain dau ddeg naw	29ain	nawfed ar hugain
30	deg ar hugain tri deg	30ain	degfed ar hugain
31	un ar ddeg ar hugain tri deg un	31ain	unfed ar ddeg ar hugain
32	deuddeg ar hugain tri deg dau	32ain	(rhif) tri deg dau deuddegfed ar hugain
33	tri ar ddeg ar hugain tri deg tri	33ain	(rhif) tri deg tri tri ar ddegfed ar hugain
34	pedwar deg ar hugain tri deg pedwar	34ain	(rhif) tri deg pedwar pedwar degfed ar hugain
35	pymtheg ar hugain tri deg pump	35ain	(rhif) tri deg pump pymthegfed ar hugain
36	un ar bymtheg ar hugain tri deg chwech	36ain	(rhif) tri deg chwech un ar bymthegfed ar hugain
37	dau ar bymtheg ar hugain tri deg saith	37ain	(rhif) tri deg saith dau ar bymthegfed ar hugain
38	deunaw ar hugain tri deg wyth	38ain	(rhif) tri deg wyth deunawfed ar hugain
39	pedwar ar bymtheg ar hugain tri deg naw	39ain	(rhif) tri deg naw pedwerydd ar bymtheg ar hugain
40	deugain pedwar deg	40fed	(rhif) pedwar deg deugainfed
50	hanner cant pum deg	50fed	(rhif) pum deg hanner canfed
60	trigain chwe deg	60fed	(rhif) chwe deg trigainfed
70	deg a thrigain saith deg	70fed	(rhif) saith deg degfed a thrigain
80	pedwar ugain wyth deg	80fed	(rhif) wyth deg pedwar ugainfed
90	deg a phedwar ugain naw deg	90fed	(rhif) naw deg degfed a phedwar ugain
100	cant	100fed	canfed
101	cant ac un		(rhif) cant ac un
102	cant a dau		(rhif) cant a dau
120	cant ac ugain cant dau ddeg		(rhif) cant dau ddeg
200	dau gant	200fed	dau ganfed
300	tri chant	300fed	tri chanfed
400	pedwar cant	400fed	pedwar canfed
500	pum cant	500fed	pum canfed
600	chwe chant	600fed	chwe chanfed
700	saith cant	700fed	saith canfed
800	wyth cant	800fed	wyth canfed
900	naw cant	900fed	naw canfed
1,000	mil	1000fed	milfed
10,000	deng mil		deng milfed
100,000	mwnt can mil		can milfed
1 million	miliwn		miliyenfed
1 billion	biliwn		biliyenfed

Fractions
half	hanner
third	traean
quarter	chwarter
fifth	pumed
sixth	chweched

Hear some Welsh numbers:

Notes

un triggers soft mutation in feminine nouns, e.g. un delyn (one harp)
dau and dwy (two) trigger soft mutation in nouns, and take a soft mutation when preceded by the definite article y, e.g. dau gi (two dogs), dwy gath (two cats), y ddau geffyl (the two horses), y ddwy ddafad (the two sheep).
tri (three) causes aspirate mutation in nouns, though this is often omitted in colloquial speech, e.g. tri chi (three dogs).
pump (five) becomes pum when followed directly by a noun, e.g. pum cath (five cats), but pump o gathod
chwech (six) becomes chwe and triggers aspirate mutation when followed directly by a singular noun, e.g. chwe chath (five cats)
When counting things deg (10) becomes deng, e.g. deng munud (10 minutes). This also applies when it is part of a compound, e.g. deuddeng mlynedd (12 years).
In ordinal numbers greater than 10 the thing counted is placed between the first and second parts of the number, e.g. unfed benod ar hugain (21st chapter). The traditional ordinal numbers above 31 are not commonly used in colloquial Welsh.

If you would like to make any corrections or additions to this page, or if you can provide recordings, please contact me.

Links

Numbers in Welsh
http://www.sf.airnet.ne.jp/~ts/language/number/traditional_welsh.html
http://www.sf.airnet.ne.jp/~ts/language/number/modern_welsh.html
http://clwbmalucachu.co.uk/cmc/cheat/cheat_numerals.htm
http://www.bangor.ac.uk/cymorthcymraeg/dyddiadau.php.en

Numbers in Celtic languages

Proto-Celtic, Celtiberian, Gaulish, Proto-Brythonic, Cumbric, Old Welsh, Middle Welsh, Welsh, Middle Cornish, Cornish, Old Breton, Middle Breton, Breton Old Irish, Middle Irish, Irish, Manx, Scottish Gaelic

Numbers in other languages

Alphabetical index | Language family index

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