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Purchase Order Generator

Generate unique purchase order numbers for procurement, accounts payable and supplier management.

Code Maker
Low 30 bits entropy

OK for non-sensitive use such as event codes.

Character Sets
Generated Output
PO-8225-KFAH
PO-6495-SPFV

Frequently Asked Questions

Should PO numbers be sequential?

Yes in most accounting systems. Use our Sequential Generator for ordered PO series. Use this tool if you need random PO numbers for testing or bulk pre-generation.

What format do accounting systems expect for PO numbers?

Most ERP systems (SAP, Oracle, Dynamics) accept alphanumeric PO numbers. A year-prefix like PO-2024-XXXX is common. Check your system's maximum field length — typically 10–20 characters.

Can I pre-generate a block of PO numbers?

Yes — generate a batch and export to CSV. Your purchasing team can draw from this pre-approved pool, which is useful for organisations that require finance sign-off before PO numbers are assigned.

Related Tools

🧾
Invoice Number Generator
Sequential or random invoice numbers.
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Order Reference Generator
Unique order reference codes for e-commerce.
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Contract Number Generator
Contract and agreement reference numbers.

Further Reading

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How Purchase Order Numbers Work, From Requisition to Payment
A purchase order number links every stage of a transaction together. Here's how it's structured, why sequencing matters to auditors, and where random numbers still have a role.
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Reference Number vs Order Number vs Tracking Number: What's the Difference?
One purchase can generate four different numbers before it ever reaches your door. Here is what each one actually identifies.
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