Quick Calculator Widget
A paper-tape calculator widget for financial and accounting applications with keyboard-driven input and print functionality.
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Open in New TabQuick Calculator Widget
A paper-tape calculator widget designed for integration into B2B applications such as accounting systems, logistics platforms, and invoicing software.
Key Features
Paper Tape History
Just like a physical adding machine, every calculation is recorded on the tape, making it easy to review and verify your work.
Keyboard-Driven Input
Full numpad support with operators (+, -, *, /), Enter to calculate, C to clear, and Backspace to correct mistakes. Press F10 to toggle the calculator from anywhere.
Draggable Floating Window
The calculator appears as a floating widget that can be dragged to any position, staying out of your way while remaining accessible.
Print and Copy
Right-click the tape to print a hardcopy or copy all calculations to your clipboard. Use 'A' to accept and copy the current result.
Focus Management
Click outside to blur the calculator (dims with overlay), click again to refocus. Esc closes the calculator entirely.
Use Cases
- Accounting Software: Quick calculations while entering journal entries
- Invoicing Systems: Calculate totals, discounts, and taxes
- Logistics Platforms: Compute weights, dimensions, and costs
- Inventory Management: Stock calculations and reorder quantities
Keyboard Shortcuts
| Key | Action |
|---|---|
| F10 | Open/Close calculator |
| 0-9 | Enter digits |
| + - * / | Operators |
| Enter/= | Calculate result |
| C | Clear all |
| Backspace | Delete last digit |
| A | Accept & copy result |
| Esc | Close calculator |
Technologies Used
- HTML/CSS/JavaScript: Standalone widget with no dependencies
- Tailwind CSS (CDN): Utility-first styling
- Vanilla JS: No framework required for integration
Key Features
- Paper-tape calculator with history
- Keyboard-driven input (numpad + operators)
- Draggable floating window
- Print tape to PDF
- Copy values to clipboard
- Focus management with visual feedback
Technologies Used
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