Ordinal Numbers 30+ in Spanish

Ordinal numbers 21st-99th are are simply written out as a two separate words. Consider the following examples.
English
Spanish
twenty first
21st
vigésimo primero
21°
thirty sixth
36th
trigésimo sexto
36°

Basic Ordinal Numbers 30th-100th

The basic ordinal numbers that are multiples of ten through 100 must be memorized. The following are the basic ordinal numbers 30th-100th.

fortieth
40th
cuadragésimo
40°
fiftieth
50th
quincuagésimo
50°
sixtieth
60th
sexagésimo
60°
seventieth
70th
septuagésimo
70°
eightieth
80th
octogésimo
80°
ninetieth
90th
nonagésimo
90°
one hundredth
100th
centésimo
100°

Ordinal Numbers Above 100

two hundredth
200th
ducentésimo
200°
three hundredth
300th
tricentésimo
300°
four hundredth
400th
cuadringentésimo
400°
five hundredth
500th
quingentésimo
500°
six hundredth
600th
sexcentésimo
600°
seven hundredth
700th
septingentésimo
700°
eight hundredth
800th
octingentésimo
800°
nine hundredth
900th
noningentésimo
900°
one thousandth
1000th
milésimo
1000°

Forming ordinal numbers for the multiples between 100 and 1000 is straight forward, simply follow the rules for forming ordinal numbers previously outlined for Ordinal Numbers 1-30 in Spanish. For each ordinal number, write out each successive word separately. Review the following examples.

four hundred eighty third
cuadringentésimo octagésimo tercero
(400th + 80th + 3rd)
one hundred eighty seventh
centésimo octogésimo séptimo
(100th + 80th + 7th)

Primero and Tercero

The ordinal numbers primero (first), tercero (third), and their derivatives, drop the final -o when place before any masculine noun to become primer and tercer. Review the following exmaples.

Juanito is my first grandson.
Juanito es mi primer nieto.
It's the third car I've purchased.
Es el tercer auto que he comprado.

Dates

In Spanish, cardinal numbers are used for dates except for the first, which uses an ordinal number.

Today is July 1.
Hoy es primero de julio.
Tomorrow is July 2.
Mañana es el dos de julio.

Placement

In Spanish, ordinal numbers almost always precede the nouns they modify. However, if the noun is royalty (pope, king, etc.) or the name of a street, then the ordinal number is placed after the noun. If both cardinal numbers (1,2,3 ...) and ordinal numbers (1st, 2nd, 3rd ...) appear together, the cardinal number is placed before the ordinal number. Review the following examples.

Henry the 5th
Henry Quinto
8th street
la Calle Octava
The first two movies were great!
¡Las dos primeras películas fueron buenísimas!
The first three days were horrible.
Los tres primeros días fueron horribles.

Formal Usage

Ordinal numbers are typically used up to the 10th. Ordinal number above 10th (11th, 12th, etc.) are consider formal and uncommon. For larger numbers, cardinal numbers are more common, especially in speech.

After the 20th century ...
Después del siglo 20 ...
It was his 40th birthday yesterday.
El cumplió 40 años ayer.

Abbreviations

To write out ordinal numbers numerically in Spanish, simply add a decimal and the superscript o, or if counting feminine nouns, and er  for shorter versions such as primer (1er ) or tercer (3er ). Review the following examples.

  • primer -> 1.er 
  • segundo -> 2.o
  • tercera -> 3.