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Invoice Calculator

Build an invoice with line items, quantities, rates, discounts, and tax. Calculate subtotals and totals instantly.

Invoice Settings

Line Items

Description Qty Unit Price Amount
0.00 ×
Results update as you type.

How It Works

This invoice calculator lets you build a detailed invoice with multiple line items. Each item has a description, quantity, and unit price. The calculator computes line totals, applies discounts and tax, and shows the final amount due.

Features
  • Multiple line items: Add as many items as needed with descriptions, quantities, and prices
  • Tax calculation: Apply a tax rate to the subtotal (after discount)
  • Discount support: Apply a percentage or flat-amount discount to the subtotal
  • Currency selection: Choose from common currency symbols
  • Live calculation: Totals update as you type quantities and prices
Formulas:

Line Amount: Quantity × Unit Price
Subtotal: Sum of all line amounts
Discount: Subtotal × Rate% or flat amount
Tax: (Subtotal − Discount) × Tax Rate%
Total: Subtotal − Discount + Tax

Common Use Cases

Freelancers

  • Calculate totals for client billing
  • Verify invoice amounts before sending
  • Apply project discounts or tax

Small Business

  • Quick estimates for quotes and proposals
  • Verify supplier invoice totals
  • Calculate tax on goods and services

Embed This Util

You can embed this util on your own site as a widget. Adding ?embed=1 to the URL loads a compact version with just the tool itself; no header, menu, or documentation. Paste this snippet into your HTML: 


    

       Copy snippet
      Adjust the height to taste.
    

  




          

          

            
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