Calc Tool is a robust command-line utility for performing arithmetic, trigonometric calculations, and seamless unit conversions.
Install & Download
1. ClawHub CLI
The fastest way to install a skill directly from the registry.
npx clawhub@latest install calc-tool
2. Manual Installation
Copy the skill folder to one of these locations
~/.openclaw/skills/ <project>/skills/ Priority: Workspace > Local > Bundled
3. Prompt Installation
Copy this prompt to OpenClaw to install it automatically.
Help me install calc-tool using Clawhub. If Clawhub is not installed, install it first (npm i -g clawhub).
Prefer to download?
Get the raw skill files in a ZIP archive.
What is Calc Tool?
Calc Tool provides a streamlined interface for developers to execute mathematical operations without leaving the terminal environment. Whether you are working on complex algorithms or simple CSS unit conversions, this utility integrates perfectly into the daily developer workflow. As a key component in the Openclaw Skills ecosystem, it allows for rapid calculation and verification of data without the need for a GUI-based calculator.
By supporting everything from basic arithmetic to advanced trigonometry and natural language unit transformations, it serves as a versatile tool for technical professionals. It bridges the gap between raw code and mathematical precision, ensuring that developers can stay focused on their IDE while handling necessary computations.
Calc Tool Use Cases
- Evaluating complex mathematical expressions during the development of algorithms.
- Converting units like centimeters to inches for responsive UI/UX design specifications.
- Calculating trigonometric values for graphics programming, animations, or physics-based game logic.
- Verifying grouped expression logic before implementing it in source code.
How Calc Tool Works
- The user initiates a command by passing a mathematical expression or conversion string as a CLI argument.
- The engine parses the input string to identify operators, functions, and unit identifiers.
- The utility processes the request through its mathematical evaluator or unit conversion mapping engine.
- The calculated result is printed to the standard output, allowing it to be read or piped into other Openclaw Skills.
Calc Tool Setup
To install and configure Calc Tool for your environment, follow these steps:
# Install the utility globally
npm install -g calc-tool
# Run a test calculation to verify installation
calc-tool '2 + 2'
Calc Tool Data Schema & Taxonomy
Calc Tool operates on string inputs and returns high-precision results. The data structure for inputs is categorized as follows:
| Input Type | Format | Example |
|---|---|---|
| Basic Math | Standard arithmetic operators | 2 + 2 |
| Trig Functions | Function name with value in parentheses | sin(45) * 10 |
| Conversion | Numeric value followed by 'unit to unit' syntax | 100 cm to inches |
| Grouping | Parenthetical expressions for order of operations | (10 + 5) * 2 |
Calc Tool Advanced Features
- Support for complex expression grouping to handle multi-stage calculations.
- High-precision floating-point arithmetic for scientific and technical use cases.
- Natural language processing for unit conversions, supporting length, mass, and more.
- Lightweight footprint designed to work seamlessly within scripts and automated Openclaw Skills workflows.
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