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Invoice Number Generator: Sequential Receipt Numbers

Generate sequential invoice or receipt numbers with configurable prefixes, dates and zero-padded counters. All processing happens in your browser.

1 to 10 (zero-padded)

PreviewINV-20260905-00001
  1. 01INV-20260905-00001
  2. 02INV-20260905-00002
  3. 03INV-20260905-00003
  4. 04INV-20260905-00004
  5. 05INV-20260905-00005
  6. 06INV-20260905-00006
  7. 07INV-20260905-00007
  8. 08INV-20260905-00008
  9. 09INV-20260905-00009
  10. 10INV-20260905-00010

Numbers update live as you change options. Click any number to copy it, or Copy all to grab the list. All processing happens in your browser.

HOW TO USE

  1. 1Pick a prefix on the left. INV, REC, a custom one, or none.
  2. 2Choose how the date appears: YYYYMMDD, YYMMDD, YYYYMM, YY or none.
  3. 3Set the digit count, the starting number and how many to generate.
  4. 4The list updates live. Copy one or Copy all to grab the batch.

EXAMPLE

INPUT

Prefix INV · Date YYYYMMDD · 5 digits · start 1 · count 10

OUTPUT

INV-20260804-00001 ... INV-20260804-00010

FAQ

What is an invoice number generator?
It creates sequential, unique invoice or receipt numbers — a prefix, a date stamp and a zero-padded counter like INV-20260115-00001 — so every invoice you issue is traceable and sortable.
Can I use my own prefix?
Yes. The Custom prefix option lets you type anything, e.g. FA, ACME-2026 or a client code.
Does it store my numbers anywhere?
No. Everything is generated in your browser and stays local. Nothing is uploaded or saved.
What does the digit count control?
It is the zero-padded width of the sequence portion. 5 means 00001, 00002 and so on.
How many numbers can I generate at once?
Up to 1000 in one batch. Pick a larger count for longer runs.

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