Currency Regular Expressions

A set of regular expressions that helps you validate and parse Money/Currency/Price values.

Currency amount with optional thousands separators, negative numbers, and two-digit fraction:

/^-?\d+(,\d{3})*(\.\d{1,2})?$/

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Matches:

• 100
• -0.99
• 12,345,678.90

Currency amount (no thousands separators, must be positive, two-digit fraction):

/(?:^[1-9]([0-9]+)?(?:\.[0-9]{1,2})?$)|(?:^(?:0)$)|(?:^[0-9]\.[0-9](?:[0-9])?$)/

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Matches:

• 100
• 0.99
• 1234567890

Validate US dollars, including zero dollars.

^(\$)?(([1-9]\d{0,2}(\,\d{3})*)|([1-9]\d*)|(0))(\.\d{2})?$

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Matches:

• $1,234,567.89
• 1234567.89
• $0.00

See Also:

• Decimal Number Regular Expression
• Regex To Match Dollar ($) And Comma (,) In String
• Regex To Match Numbers Containing Only Digits, Commas, and Dots