Order Number Generator
Fast, accurate, and free online Order Number Generator tool that runs directly in your browser.
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1Enter data
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2Click the button
The tool will immediately process your data in the browser. -
3Get the result
Copy the finished text or save the file to your device.
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Other tools you may find usefulOrder number generator – unique ID for e-commerce and
Systems Order numbers are unique transaction identifiers in e-commerce, ERP and ticketing systems. A good order number format is human-readable, unique, short, and allows for chronological sorting. The tool generates numbers in popular formats.
Order number formats
Sequential: ORD-000001, ORD-000002... Simple but predictable (you can see the scale of the business). Date-based: 20241215-0001 (year-month-day-sequence). Chronologically sortable. Hash/UUID: a3f7c2d1-9e4b-... Globally unique, hard to guess. Mixed: ORD-2024-A7K3 (year + random suffix). Store format: INV-2024-00123 (invoice).
Good Order Number Requirements
Unique: Never repeated. Readability: short, easy to dictate on the phone (no O vs 0, I vs 1). Sortability: chronological without an additional field. Security: does not reveal the scale of the business (sequential does). Customer Service: Quick Search. Format: ORD-YYYYMM-XXXXX balances these requirements.
Generating in
PHP code: sprintf("ORD-%s-%05d", date("Ym"), $nextId). Node.js: `ORD-${new Date().toISOString().slice(0,7).replace("-","")}-${String(id).padStart(5,"0")}`. UUID v4: crypto.randomUUID() (Node 14.17+, browsers). Nanoid (npm): nanoid() = "V1StGXR8_Z5jdHi6B-myT" (shorter than UUID). ULID: timestamp + random, sortable.
Order numbers in databases
Auto-increment: simple sequence, but reveals scale. UUID: globally unique, weak index (random = slow B-tree). ULID/KSUID: timestamp-prefix UUID = chronologically sortable, better index. Composite: year + sequence per year. Partitioning: ORDER_2024 as a separate table or partition.
FAQ
How do I prevent duplicate order numbers?
Database: UNIQUE constraint on order_number column. DB sequence: PostgreSQL SEQUENCE, MySQL AUTO_INCREMENT – atomic and unique. Redis: INCR (atomic counter). UUID: unique by definition (probability of collision is negligible). Avoid: In-app generation without DB transactions.
What is ULID and when to use it?
ULID (Universally Unique Lexicographically Sortable Identifier): 26 characters, 48-bit timestamp + 80-bit random. Example: 01ARZ3NDEKTSV4RRFFQ69G5FAV. Advantages: chronologically sorts correctly without ORDER BY created_at, URL-safe, case-insensitive. Better than UUID v4 for DB master keys (better B-tree index).
How to generate invoice numbers in accordance with Polish law?
Polish VAT Act: the invoice number must be unique and continuous in a given year. Format: any but with a sequential number. E.g. FV/2024/001. Continuity: you can't have gaps (FV/2024/001, FV/2024/003 without FV/2024/002). Issuer: own numbering system or through FK systems (Symfonia, Insert, Comarch).
How to format order numbers for e-commerce?
Prestashop: AAAXXXXX (prefix + sequence). WooCommerce: #12345 (default database ID). Magento: 100000001 (starts from 100M). Shopify: #1001 (default). Own: prefix_year_sequence e.g. MYSKEP-2024-00001. Tip: do not use the sequence starting from #1 - it is obvious that the store is new.
How do I send my order number in my confirmation email?
Subject: Order confirmation no. ORD-2024-00123. Bodysuit: number visible at the top. Format: clear font, easy to copy. Link to track: twojsklep.pl/zamowanie/ORD-2024-00123. QR code: with link to order status. Reply to email: it should be sent to ticketing with the order number.