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Currency Formatter Guide

Format a number as a currency amount with thousand separators and a symbol, in Indonesian or English style.

A currency formatter adds grouping separators and a chosen symbol to a number. Currency Formatter formats your Amount as you type; it does not exchange currencies or convert between IDR and USD.

Format the same number two ways

Type 1250000 into Amount. With Currency at Rupiah (Rp) and Separators at Indonesian, Formatted should say Rp1.250.000. Switch to English: it becomes Rp1,250,000. The number itself did not change, and switching the separator style does not change the currency symbol. Enable Space after the symbol if you want Rp 1,250,000 in this example.

The Separators setting also tells the tool how to read input. With Indonesian selected, 1.250,50 means one thousand two hundred fifty and a half; English expects 1,250.50 for that value. Change style before pasting a localized amount. Set Decimal places to 2 to force two digits after the decimal separator. If you see That is not a number, check which separator style you selected and remove any pasted currency letters before retrying.

This uses browser number formatting for display, not a financial calculation. Check the original amount, currency code, and rounding rules before sending a bill or using the text in software.

Where your input goes

Processing runs in your browser. The tool does not upload your input to ilham.dev.

For more background, read Calculators and Unit Conversion.

Questions you might have

Why do the separators matter?
Indonesian uses a dot for thousands and a comma for decimals, the reverse of English. Sending 1.250 to a reader who expects English looks like one and a quarter, so the style switch keeps the amount unambiguous.
What does the decimal places box do?
It pins the number of digits after the decimal mark. Leave it blank and whole numbers show none while fractional ones show two; set it to 0 to round rupiah to the nearest whole unit.
Does it add a currency code?
No. It only knows the symbol you pick, so Rp and $ are distinguished by shape alone. Use a code such as IDR or USD when a machine has to read the value.