What scale words does Indonesian use?

Indonesian groups numbers in thousands: ribu (thousand), juta (million), miliar (billion), and triliun (trillion). So 1,500,000 is satu juta lima ratus ribu rupiah. The tool walks the number three digits at a time and attaches the right scale word to each group.

Why is 1000 seribu and 100 seratus?

Indonesian uses the prefix se- (meaning one) instead of satu for exactly one hundred and one thousand. So 100 is seratus, not satu ratus, and 1,000 is seribu, not satu ribu. The tool applies these special forms automatically while larger multiples use the regular pattern, such as dua ribu for 2,000.

What does saja at the end mean?

Saja means only or just. On a formal Indonesian financial document the written amount closes with saja to mark it as final and complete, the same role and no more plays on an English cheque.

Does it handle sen subunits?

Yes. If you enter a decimal the tool spells the sen (one-hundredth of a rupiah) part too, though the sen is effectively obsolete in everyday use. The amount is rounded to whole sen before spelling to avoid floating-point drift.

Is the conversion private?

Yes. All spelling and rounding run in your browser using Indonesian number tables. Nothing you type is sent to a server, logged, or stored anywhere.

Indonesian Currency in Words

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Rupiah amounts, written out in Bahasa Indonesia

Indonesian invoices, contracts, and bank documents print the amount in words (terbilang) next to the figure. This tool converts a plain rupiah figure into correct Bahasa Indonesia phrasing, applying the special seratus and seribu forms and the closing “saja.”

How it works

The amount is grouped into blocks of three digits from the right, and each block is spelled and tagged with its scale word.

1,500,000 -> [1] juta  [500] ribu  [000]
           -> satu juta lima ratus ribu

Within each three-digit block, hundreds use “ratus” (with seratus for exactly 100), the teens 11-19 use “belas” (sebelas for 11), and tens use “puluh.” The se- prefix replaces satu for 100 and 1,000 only. Scale words ribu, juta, miliar, and triliun mark the thousand, million, billion, and trillion groups. The final phrase ends in “rupiah … saja,” and a sen clause is added when you enter decimals.

Tips and example

Enter 1500000 and you get “Satu juta lima ratus ribu rupiah saja.” Note that 1,000 alone is “seribu” but 2,000 is “dua ribu” — the se- shortcut applies only to a leading single unit. Because the tool rounds to whole sen, decimal entries never pick up a spurious hundredth from binary floating point. For neighbouring languages, try the Malay or Tagalog currency-in-words tools.