Generators & QR
Invoice Generator
Generate simple invoices (PDF)
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Frequently asked questions
What does the Invoice Generator do?
It helps you generate simple invoices (PDF).
What inputs do I need?
Enter Subtotal, Tax rate, and Discount.
Are decimals supported?
Yes, you can use decimal values where appropriate.
Related tools
About this tool
Inputs
- Subtotal
- Tax rate
- Discount
Results
- Invoice number
- Tax amount
- Discount amount
- Total due
Consistency and speed define a good generator. The Invoice Generator delivers both by following well-defined rules to produce each output. Generated output should match the requirements of the system that will consume it — length limits, character sets, format rules. You supply subtotal, tax rate and discount, and the tool calculates invoice number, tax amount, discount amount and total due from those figures. Having a dedicated tool to generate simple invoices (pdf) saves time you would otherwise spend searching for formulas or setting up a spreadsheet.
Slug generation typically involves lowercasing, replacing spaces with hyphens, and stripping non-alphanumeric characters. If you need reproducible output for testing, use a seeded pseudo-random generator instead of true randomness. Uniqueness guarantees vary: UUIDs are statistically unique, while sequential IDs are deterministically unique. Experiment with different inputs to compare scenarios. Seeing how the result shifts tells you which factors matter most.