What are minor units in ISO 4217?

Minor units are the number of decimal places a currency uses. Most currencies use 2 (cents), some use 0 (such as the Japanese yen) and a few Gulf dinars use 3. Payment systems use this to store amounts as integers.

Why do currencies have both a letter code and a number?

The three-letter code (such as USD) is human-readable, while the three-digit numeric code is script-independent and useful in datasets where letters could be ambiguous. Both are defined by ISO 4217.

Is anything uploaded when I search?

No. The currency list is bundled with the page and all filtering runs locally in your browser.

ISO Currency Codes Reference

Look up ISO 4217 currency codes, numbers and minor units.

ISO 4217 currency codes

Look up any currency by its ISO 4217 three-letter code, numeric code or name. Each result also shows the minor units — the number of decimal places the currency uses — which payment processors need to store amounts correctly.

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