Number to Indonesian words converter

Type any number to see it written in Indonesian (terbilang), with an English-friendly pronunciation. It handles rupiah amounts, decimals and ordinals, and accepts both 1,500,000 and the Indonesian 1.500.000.

How Indonesian numbers work: 6 rules

1. 1. se- replaces satu (one)

   Before belas, puluh, ratus and ribu, "one" becomes the prefix se-: sebelas (11), sepuluh (10), seratus (100), seribu (1,000). Never before juta, miliar or triliun: 1,000,000 is satu juta.

2. 2. 11 to 19 use belas

   Add belas to the unit: dua belas (12), lima belas (15), sembilan belas (19). Only 11 is irregular: sebelas.

3. 3. Tens use puluh, hundreds use ratus

   dua puluh (20), dua puluh satu (21), tiga ratus (300), tiga ratus empat puluh lima (345). Nothing else changes.

4. 4. Big numbers group by thousands

   ribu (thousand), juta (million), miliar (billion), triliun (trillion). Read each group of three digits, then its scale word: 2.500.000 = dua juta lima ratus ribu.

5. 5. Seribu only when the thousands group is exactly 1

   1,000 is seribu, but 21,000 is dua puluh satu ribu and 101,000 is seratus satu ribu.

6. 6. Decimals: koma, then digit by digit

   Indonesian writes a comma for decimals and a dot for thousands. 2,5 = dua koma lima; 0,25 = nol koma dua lima.

Common numbers in Indonesian

Want the full picture — prices at the market, dates, times and how to bargain? Read our guide to Indonesian numbers from 1 to 1,000,000.

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