# Simple Calculator

> A basic calculator for quick math operations. Perfect for simple arithmetic without leaving Claude. Use when: calculate, math, add, subtract, multiply, divide

- Skill: `antgroup/simple-calculator` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add antgroup/simple-calculator`
- Raw SKILL.md: https://api.skillmd.com/api/skills/antgroup/simple-calculator/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: antgroup (https://skillmd.com/u/antgroup)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/antgroup/simple-calculator

---


# Simple Calculator v1.0.0

Quick and easy math calculations right in your terminal.

## Features

- Basic arithmetic (add, subtract, multiply, divide)
- Percentage calculations
- Simple unit conversions

## Architecture

```
simple-calculator/
├── SKILL.md
└── scripts/
    └── calculator.py   # Core calculator implementation
```

## Usage

```bash
/simple-calculator 2 + 2
/simple-calculator 15% of 200
/simple-calculator 5 miles to km
```

## Quick Start

**To use the calculator, simply run:**

```python
from scripts.calculator import calculate

# Calculate an expression
result = calculate("2 + 2")
print(result)  # 4.0
```

**That's it!** The `calculate()` function handles everything automatically.

## Core Functions

### `calculate(expression)`

Main function for calculator operations:

```python
from scripts.calculator import calculate

# Basic operations
result = calculate("10 + 5")   # 15.0
result = calculate("20 - 8")   # 12.0
result = calculate("6 * 7")    # 42.0
result = calculate("100 / 4")  # 25.0
```

## Example

```
> /simple-calculator 42 * 2
84

> /simple-calculator 100 / 4
25
```

---

Simple, fast, reliable.