Random Alphanumeric Code Generator
Generates random alphanumeric codes in configurable lengths and formats
- 10G5DA6E
- TR0B5MLH
- U8DYPLNE
- AZNRH860
- R1I0R9P6
- CR8WSXJZ
- 1B4WDAUF
- 2D3QOBRE
- AKGWYX33
- S67V27R9
Generated 10 items
About this generator
A random alphanumeric code generator gives you formatted codes for gift cards, license keys, referral programs, and verification tokens in seconds — no spreadsheet, no script. Control the character set (uppercase, lowercase, digits, or mixed), code length, quantity, and grouping format. Set a group size of 4 with a hyphen separator and you get the classic XXXX-XXXX-XXXX-XXXX license key pattern instantly. Character set choice matters more than most people expect. Uppercase-plus-digits drops ambiguous characters like O and 0, making codes easier to type from printed vouchers. Lowercase formats suit case-sensitive URL tokens. Digits-only mode produces numeric PINs. Generate up to 100 codes per run and paste the batch straight into a CSV or database seed file.
How to use
- Set the count field to how many codes you need, up to 100 per run.
- Choose a code length — 8 for vouchers, 16 for license keys, 6 for PINs.
- Select a character set from the format dropdown that matches your use case.
- Optionally enter a group size and separator to format codes into readable blocks.
- Click Generate, then copy the full list and paste it into your spreadsheet, database, or admin tool.
Use Cases
- •Generating XXXX-XXXX-XXXX-XXXX license keys for a software distribution batch
- •Creating 8-character referral codes for a SaaS onboarding campaign in Notion or a CRM
- •Seeding a Postgres staging database with unique registration tokens for 100 beta users
- •Producing digits-only 6-digit OTPs for testing a two-factor authentication flow
- •Generating URL-safe lowercase tokens for password-reset links in a Next.js app
Tips
- →Use uppercase + digits and group size 4 with a hyphen to produce license key codes that users can transcribe without misreading O as 0.
- →For URL tokens, pick lowercase + digits and no grouping — lowercase keeps links tidy and avoids case-sensitivity issues in some web frameworks.
- →Generate a batch of 50 promo codes at once, then import them directly into Shopify or WooCommerce's bulk code upload field to save manual entry time.
- →If you're using codes as order or ticket IDs, prefix them with a letter manually (e.g., 'ORD-' before the code) so IDs never start with a digit, which can break some database ID fields.
- →For test data seeding, generate 100 codes at length 12 with mixed case and paste them straight into a SQL INSERT script or CSV fixture file.
- →Avoid group sizes that don't divide evenly into your total length — a 10-character code with group size 4 produces an uneven last block that looks like a formatting error.
FAQ
how do I generate license key format codes like XXXX-XXXX-XXXX-XXXX
Set the code length to 16, enter 4 in the group size field, and type a hyphen as the separator. The generator splits each code into four groups of four. Choose uppercase + digits to avoid visually ambiguous characters like O and 0.
are the generated codes guaranteed unique
Each code is generated independently at random. For length-8 alphanumeric codes, the chance of a collision in a 100-code batch is negligibly small, but not mathematically zero. If uniqueness is critical, store the codes in a database and check for duplicates before assigning them.
is this tool safe for generating real API keys or production tokens
It uses browser-based randomness, which is fine for promo codes, test data, and non-security-critical tokens. For production secrets — session tokens, API keys, password-reset links — use a server-side CSPRNG instead, such as Node's crypto.randomBytes or Python's secrets module.
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