What's the longest vanity plate?

Most states allow 6-7 characters maximum on standard vanity plates. Some specialty plate designs (organization-themed) have shorter limits (5-6 characters) to fit the design overlay. The 7-character standard exists because the plate's physical dimensions limit characters at readable size. Hawaii allows up to 7 characters; Arizona and several others allow 7; California 7; Texas 7. None allow more than 7 on standard.

How do I check vanity availability?

Each state DMV has an online availability checker. Search “[state] DMV vanity plate availability”. The system checks against existing plates and the banned-words list. Most popular ideas (BAT, COOL, NICE, common names) are taken. Iterate with variations: add a number, swap a letter, use a less-common abbreviation. Many cars have plates with intentional misspellings to get desired phonetics around availability.

Why was my vanity plate rejected?

Banned-word lists. Each state DMV reviews vanity applications against a list of words / phrases deemed offensive (profanity, sexual content, hate speech, political extremes, references to drugs / alcohol). Letter substitutions (numbers for letters: 8 = B, 4 = A) are checked. Some states reject creative obfuscation; others only catch obvious matches. California publishes its 1500+ banned-word list. If rejected, you can typically appeal with explanation; outcome varies.

What's a specialty plate?

Plate with custom design (military, alumni university, sports team, charity, etc.) issued by the state DMV. Cost: $25-100 application fee plus portion ($10-50/year) going to the organization. Designs vary widely by state. Some specialty plates allow combining with vanity characters (custom design + custom letters), often for additional fee. Useful for supporting causes / organizations or showing affiliation; doesn't affect plate function.

Can I build software using these regexes?

Yes for validation. Each state's pattern provides a regex you can use to validate captures from OCR or check user input formatting. Caveats: (1) Old plates may not match current format (states change patterns over decades). (2) Specialty plates often deviate from standard format. (3) Government / dealer / temporary plates have entirely different patterns. (4) Vanity plates can be much shorter / different from standard. For comprehensive plate validation, allow flexibility beyond just standard format.

International plates?

Different conventions entirely. EU plates: country code prefix (D = Germany, F = France) + numeric/letter mix, often 8 characters. UK: 2-letter area code + 2-digit year + 3-letter random (AB12 CDE). Mexico: state-specific 3-letter + 3-4-number. Japan: kanji prefecture + serial. Russia: 3-letter + 3-digit + region code. The lookup tool covers US only; for international plate research, refer to country-specific motoring authorities.

Automotive · Free tool

License Plate Format Lookup

US state license plate format reference. Standard pattern, max length, personalized and commercial rules.

Updated June 2026

Select state

California standard plate

1 digit + 3 letters + 3 digits

Regex: ^[0-9][A-Z]{3}[0-9]{3}$

1ABC234

7XYZ890

5JKL012

Plate specifications

Max length (standard)

7 characters

Personalized max

7 characters

Commercial

Number prefix + letters

Vanity rules

Up to 7 characters incl. spaces

Formats shown reflect current standard-issue passenger plates. Specialty, antique, dealer, and military plates follow separate patterns not covered here. Your state’s DMV is the authoritative source — confirm before printing.

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What it does

US license plate formats vary state by state — different lengths, character mixes, and patterns. Standard formats: California uses 7 characters in pattern 1ABC234 (number-letter-number); Texas uses 7-char ABC1234 (3-letter prefix + 4 digits); New York uses ABC-1234 (3 letters + 4 digits); Florida ABC-D12 (mixed); plus dozens of state-specific variations. Vanity plates relax the rules — typically 2-7 characters, letters and numbers, with state-specific banned-word lists (DMVs reject crude / offensive / political requests). Specialty plates (military, alumni, organization) often have shorter character limits to fit the design overlay. Knowing your state's format helps when choosing vanity, applying for specialty, or building software that parses plates (parking enforcement, toll systems, fleet management).

The lookup covers all 50 US states + DC plus territories: standard plate format, maximum character length for vanity, plate types available (standard, vanity, specialty / organizational, antique, temporary, dealer, government), regex pattern (useful for software parsers), and example plates. Each state's DMV publishes vanity-plate banned-words lists; California's list runs 1500+ phrases. Application costs: standard plate (free with registration), vanity ($50-100/year additional typical), specialty plate ($25- 100 per design with portion going to organization).

Strategic considerations for vanity plate buyers: (1) Check availability — every state has online vanity-plate availability checkers. Most popular ideas are taken; iterate on candidates. (2) Avoid banned words — even surprising rejections happen (innocuous letter combos may match crude phrases when read certain ways). DMVs err on the side of rejection. (3) Specialty vs vanity vs custom — specialty plates (organization-themed) have specific designs and may have shorter character limits. Vanity plates use standard design with custom characters. Some states allow combining (specialty design + vanity characters at extra cost). (4) Renewal fees — vanity plates carry annual renewal surcharges; budget the recurring cost. (5) Software / parking apps — if you're writing OCR for license plates (toll systems, parking enforcement, fleet tracking), the regex pattern per state helps validate captures. Ambiguity characters (O / 0, I / 1) get treated carefully by professional plate-OCR systems.

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How to use it

Pick a US state from the menu.
Read the standard plate format and maximum length.
See available plate types (standard / vanity / specialty / antique / etc.).
View regex pattern for software / parser usage.
See example plates following the state's pattern.

When to use this tool

Vanity plate planning — confirming character limit and format.
Specialty plate research before applying for an organization-themed design.
Building software that captures or validates US license plates (parking, tolls, fleet management).
Cross-state moves — confirming what new plate format you'll get.
Trivia / curiosity about plate formatting variations.

When not to use it

Specific banned-word checks — each state has its own list; check state DMV directly.
International plates — different formats and conventions; calculator covers US only.
Plate availability lookup — that requires real-time DMV API access; check state DMV website.
Fee calculations — specific costs vary; check current state DMV pricing.

Common use cases

Onboarding a colleague who needs the same calculation/conversion
Verifying a number or output before passing it on
Quick use during a typical workday
Pre-decision sanity-check on inputs and outputs

Frequently asked questions

What's the longest vanity plate?: Most states allow 6-7 characters maximum on standard vanity plates. Some specialty plate designs (organization-themed) have shorter limits (5-6 characters) to fit the design overlay. The 7-character standard exists because the plate's physical dimensions limit characters at readable size. Hawaii allows up to 7 characters; Arizona and several others allow 7; California 7; Texas 7. None allow more than 7 on standard.
How do I check vanity availability?: Each state DMV has an online availability checker. Search “[state] DMV vanity plate availability”. The system checks against existing plates and the banned-words list. Most popular ideas (BAT, COOL, NICE, common names) are taken. Iterate with variations: add a number, swap a letter, use a less-common abbreviation. Many cars have plates with intentional misspellings to get desired phonetics around availability.
Why was my vanity plate rejected?: Banned-word lists. Each state DMV reviews vanity applications against a list of words / phrases deemed offensive (profanity, sexual content, hate speech, political extremes, references to drugs / alcohol). Letter substitutions (numbers for letters: 8 = B, 4 = A) are checked. Some states reject creative obfuscation; others only catch obvious matches. California publishes its 1500+ banned-word list. If rejected, you can typically appeal with explanation; outcome varies.
What's a specialty plate?: Plate with custom design (military, alumni university, sports team, charity, etc.) issued by the state DMV. Cost: $25-100 application fee plus portion ($10-50/year) going to the organization. Designs vary widely by state. Some specialty plates allow combining with vanity characters (custom design + custom letters), often for additional fee. Useful for supporting causes / organizations or showing affiliation; doesn't affect plate function.
Can I build software using these regexes?: Yes for validation. Each state's pattern provides a regex you can use to validate captures from OCR or check user input formatting. Caveats: (1) Old plates may not match current format (states change patterns over decades). (2) Specialty plates often deviate from standard format. (3) Government / dealer / temporary plates have entirely different patterns. (4) Vanity plates can be much shorter / different from standard. For comprehensive plate validation, allow flexibility beyond just standard format.
International plates?: Different conventions entirely. EU plates: country code prefix (D = Germany, F = France) + numeric/letter mix, often 8 characters. UK: 2-letter area code + 2-digit year + 3-letter random (AB12 CDE). Mexico: state-specific 3-letter + 3-4-number. Japan: kanji prefecture + serial. Russia: 3-letter + 3-digit + region code. The lookup tool covers US only; for international plate research, refer to country-specific motoring authorities.

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