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Invoice number generator

Preview and export a deterministic invoice identifier sequence with date and padding controls.

Identifier pattern
PREFIXINV
DATE2026
SEQUENCE0001
  1. 1INV-2026-0001
  2. 2INV-2026-0002
  3. 3INV-2026-0003
  4. 4INV-2026-0004
  5. 5INV-2026-0005
  6. 6INV-2026-0006
  7. 7INV-2026-0007
  8. 8INV-2026-0008
  9. 9INV-2026-0009
  10. 10INV-2026-0010
Identifiers in this batch10
Next identifier (unreserved)INV-2026-0011

Deterministic local identifiers only. No invoice is created or sent. The sequence is not saved or reserved, and uniqueness or jurisdiction compliance is not checked. Check your records before use.

1–16 ASCII letters or digits.
YYYY-MM-DD; not the device date.
Processed on your device

How it works & useful details

Formula & assumptions

Identifiers combine an ASCII letter/digit prefix, an optional explicit date segment and an integer sequence. Padding sets the minimum digit count and never truncates larger numbers. Date is a real calendar date from 1900–9999; batch size is 1–500; sequence values are 1–999,999,999. Each run starts from your entered number. This is not a uniqueness check, compliant invoice issuance or a stored counter.

Local planning workspace

These tools are planning aids, not financial, tax or legal advice. Values stay in this page. Nothing is sent, saved to your records or fetched from external services.

USD, EUR, GBP, CAD and AUD are labels with two decimal places. There is no currency conversion. Enter decimals with a dot and no commas. Money inputs are limited to 1 billion units; calculated amounts to 10 trillion. Rates are supplied by you, with up to four decimal places.