Free Invoicing Tools

Online tools for creating, converting and validating invoices. Works directly in your browser, no registration needed. All tools are GDPR-compliant and never store your data on our servers.

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PDF to UBL Converter

Convert PDF invoices to UBL 2.1 XML format for e-invoicing. Ideal for compliance with European e-invoicing standards such as EN 16931, Peppol BIS and NLCIUS. All conversion happens entirely in your browser.

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UBL to PDF Converter

Convert UBL XML invoices to readable PDF documents. Supports UBL 2.1 and NLCIUS-compliant invoices. Perfect for archiving or sharing XML invoices as human-readable PDF files with your customers.

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Invoice Creator

Create professional invoices and download as PDF or UBL XML. Features automatic VAT calculation for Dutch tax rates, customizable layout and all mandatory fields required by EU regulations.

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VAT Calculator

Calculate VAT amounts with Dutch rates (21%, 9%, 0%). Convert between net and gross amounts instantly. Also supports calculations for intra-community supplies and reverse charge mechanisms.

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UBL Validator

Check if your UBL XML invoice complies with the standard. Validates against UBL 2.1 schema, NLCIUS rules and EN 16931. Get detailed error messages and correction hints for non-compliant invoices.

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IBAN Validator

Validate IBAN numbers and find the corresponding BIC code. Supports all European bank account numbers. Verify account details before making transfers to avoid errors and failed payments.

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Credit Note Creator

Create credit notes for returns and corrections. Generate legally compliant credit notes in PDF and UBL format with automatic linking to the original invoice and correct VAT calculation.

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Test all features without credit card. Automatic invoices within minutes.

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Let Winkel Factuur create and send your invoices automatically.