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Invoice Calculator
Calculate invoice totals with line items, tax, and discounts. Quick way to estimate project costs.
100% BROWSER-BASED
Description
Qty
Rate
Amount
$
$100.00
$
$100.00
Subtotal$200.00
Total$200.00
/ HOW TO USE
How to Use Invoice Calculator
This tool runs entirely in your browser. Upload your file, make your changes, and download the result. Your files never leave your device — everything is processed locally for maximum privacy.
/ FEATURES
Key Features
100% Client-Side Processing
No File Size Limits
Completely Free
Privacy Focused
Instant Results
Works Offline
/ USE CASES
Common Use Cases
- —Estimate project costs quickly
- —Calculate invoice totals
- —Apply discounts and taxes
- —Price multiple line items
/ FAQ
Frequently Asked Questions
Does this create an invoice?
This is a calculator for estimates. For actual invoices, use dedicated invoicing software.
/ YOUR PRIVACY
Your Privacy is Guaranteed
Unlike other tools that upload your files to servers, ToolBox processes everything locally in your browser.
No server uploads
Instant processing
Works offline