calculator
Performs arbitrary-precision arithmetic calculations including addition, subtraction, multiplication, division, and exponents. Use when the user asks to calculate, compute, or evaluate math expressions, or when precise decimal arithmetic is needed to avoid floating-point errors.
npx skills add Code-and-Sorts/awesome-copilot-agents --skill calculator --agent copilot
Same command for any agent — swap --agent for claude-code, codex, cursor.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# Calculator Evaluate arithmetic expressions with arbitrary-precision decimal math using [big.js](https://github.com/MikeMcl/big.js/). ## When to Use - User asks to calculate or evaluate a math expression - Precise decimal arithmetic is needed (avoids floating-point errors like `0.1 + 0.2 = 0.30000000000000004`) - Expressions involve parentheses, operator precedence, or exponents ## Supported Operations | Operator | Description | Precedence | | -------- | ----------- | ---------- | | `+` | Addition | 1 | | `-` | Subtraction | 1 | | `*` | Multiplication | 2 | | `/` | Division | 2 | | `^` | Exponent (right-associative) | 3 | | `()` | Parentheses | Highest | ## Usage ```bash cd scripts npm ci || npm install npm run build npm run calculate "<expression>" ``` ## Examples | Input | Output | | ----- | ------ | | `"3 + 2"` | `5` | | `"10 / 4"` | `2.5` | | `"2 ^ 10"` | `1024` | | `"(2 + 3) * 4"` | `20` | | `"1 + 4.5 * (3-6) / 5"` | `-1.7` | | `"-5 + 3"` | `-2` | | `"2 ^ 3 ^ 2"` | `512` (right-associative: 2^9) | ## Edge Cases - **Empty expression**: Throws "Empty expression" error - **Mismatched parentheses**: Throws "Mismatched parentheses" error - **Division by zero**: big.js throws an er
- When to Use
- Supported Operations
- Usage
- Examples
- Edge Cases
- Limitations
cd scripts npm ci || npm install npm run build npm run calculate "<expression>"
What does the calculator skill do?
Performs arbitrary-precision arithmetic calculations including addition, subtraction, multiplication, division, and exponents. Use when the user asks to calculate, compute, or evaluate math expressions, or when precise decimal arithmetic is needed to avoid floating-point errors.
How do I install it?
Run `npx skills add Code-and-Sorts/awesome-copilot-agents --skill calculator --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From Code-and-Sorts/awesome-copilot-agents, a repository with 554 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.