Validationflags: gi

Canadian Postal Code

Match Canadian postal codes in the A1A 1A1 or A1A1A1 format with valid first-letter prefixes.

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Available in

JSSupported

JavaScript / ECMAScript

Browser-native RegExp. Default if you don't pick.

PYSupported

Python (re)

CPython stdlib `re`. Unicode-aware `\w` and `\d` by default.

GOSupported

Go (RE2)

Linear-time matching. No backreferences or lookarounds.

Pattern

regexengine-agnostic
[ABCEGHJ-NPRSTVXY]\d[A-Z] ?\d[A-Z]\d   (flags: gi)

Raw source: [ABCEGHJ-NPRSTVXY]\d[A-Z] ?\d[A-Z]\d

How it works

The leading character is constrained to letters actually used by Canada Post (D, F, I, O, Q, U, W, Z are excluded). Alternating letter-digit pattern, with an optional space separator.

Examples

Input

K1A 0B1

Matches

  • K1A 0B1

Input

M5V3L9

Matches

  • M5V3L9

Input

12345

No match

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Common use cases

  • •Canadian address form validation
  • •Shipping label generation
  • •Geographic data cleaning
  • •E-commerce checkout for CA customers

Related patterns

ISO 3166-1 alpha-2 Country Code

Validation

Validate 2-letter ISO 3166-1 alpha-2 country codes (US, GB, FR, JP, etc.) — structural check only.

ISO 4217 Currency Code

Validation

Validate 3-letter ISO 4217 currency codes (USD, EUR, GBP, JPY, etc.) — structural check only.

SWIFT / BIC Code

Validation

Validate SWIFT/BIC bank identifier codes — 8 chars (head office) or 11 chars (branch).

US ZIP Code

Validation

Match US ZIP codes in 5-digit (12345) and ZIP+4 (12345-6789) formats.

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All patterns
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