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Invoice Number Generator

Generate sequential invoice numbers with custom prefixes and formats.

Preview: INV-2026-03-001

About Invoice Number Generator

Invoice Number Generator creates sequential or custom-formatted invoice numbers for freelancers and small businesses. Define a prefix, year segment, and starting sequence number to match your invoicing convention. Download a batch of numbers or copy one at a time.

  • Custom prefix and year format
  • Sequential number generation
  • Batch download option
  • Preview of formatted numbers