IDR Formatting Demo

Type any value to see formatIdr and parseIdr (number & fixed) in action.

Input

Options

decimals: padZeros (auto) parse mode:

Formatted (formatIdr)

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Uses Indonesian rules: thousands ., decimals ,. Minus sign preserved.

Parsed (parseIdr)

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Mode number uses JS Number (IEEE-754). Mode fixed is exact (BigInt-based).

Fixed details

sign

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units (bigint)

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scale

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toString()

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toNumber()

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Tip: Use fixed for financial-grade exactness (no floating errors). Render with formatIdr(fixed).

Notes

Comma present → treated as decimal marker. Dots become thousands or are ignored.
Dots without comma → if pattern like 1.500 or 12.345.678, they’re thousands; otherwise first dot is decimal.
Use decimals option to force fixed digits (e.g., 2 for cents) and padZeros to pad in auto mode.