# How to Format Currency in ES6

You can now use the NumberFormat instance to format any number into a currency value.

const money = 💰;

// Old Way
money.toLocaleString('en-US',
  {style: 'currency', currency: 'USD'}
); // '$100.00'

// ✅ ES6 Way
new Intl.NumberFormat('en-US',
  { style: 'currency', currency: 'USD' }
).format(money); // '$100.00'

More Currency Conversion
Understanding the Parameter
- A. Parameter: Locales
- B. Parameter: Options
Resources

# More Currency Conversion

const money = 10000;

new Intl.NumberFormat('de-DE', {
  style: 'currency',
  currency: 'EUR',
}).format(money); // '€ 10,000.00'

new Intl.NumberFormat('jp-JP', {
  style: 'currency',
  currency: 'JPY',
}).format(money); // 'JP¥ 10,000'

new Intl.NumberFormat('zh-CN', {
  style: 'currency',
  currency: 'CNY',
}).format(money); // 'CN¥ 10,000.00'

# Understanding the Parameter

Let's talk about the parameters. It's made up of the locales and the options object.

new Intl.NumberFormat([locales[, options]])

# A. Parameter: Locales

First, you have the locales, this is the language and region settings. It is made up of language code and the country code.

language code + country code

Let's take a look at some examples:

Ex 1:

en-CA

en = English (language)
CA = Canada (country)

Ex 2:

de-DE

de = German (language)
DE = Germany (country)

Some More example

en-IN (English India)
fr-CA (French Canada)
ja-JP (Japanese Japan)

Here is a list of the Language code: w3schools: Language Codes

Here is a list of the Country code: w3schools: Country Codes

# B. Parameter: Options

There are tons of options, but let's just talk the two that we're using: styles, currency.

Options: Style

The style is the easy part. This is the style for your number formatting. Since this is a currency blog, our choice would be currency. The 3 possible values are:

decimal (plain number formatting, the default)
currency (currency formatting, what we're using)
percent (percent formatting)

const money = 100;

new Intl.NumberFormat('en-CAD', { currency: 'CAD'
  style: 'decimal',
}).format(money); // '100'

new Intl.NumberFormat('en-CAD', { currency: 'CAD'
  style: 'currency',
}).format(money); // 'CA$ 100.00'

new Intl.NumberFormat('en-CAD', { currency: 'CAD'
  style: 'percent',
}).format(money); // '10,000%'