# pint-compute

Uses Pint for calculations with units, conversions, dimensional checks and compound-unit simplification. Use it when a formula must keep track of physical quantities.

- skill · `type=skill` · Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, OpenCode · 482 installs · ★ 3946
- Author: parcadei
- License: MIT · policy=mirror · the beginning of the file is at the end of this page
- Source: https://github.com/parcadei/Continuous-Claude-v3/tree/HEAD/.claude/skills/pint-compute/SKILL.md
- Updated: 2026-01-26
- HTML: https://affpapa.org/en/nevibecode/skills/pint-compute

## What it does

This skill handles values with units: it parses quantities, converts them, performs arithmetic and checks whether dimensions are compatible. It can also reduce compound units to a base or compact form.

Its commands run `scripts/pint_compute.py` through `uv run python -m runtime.harness`. `parse`, `convert`, `calc`, `check` and `simplify` return JSON containing the result, magnitude, units, dimensionality and LaTeX output.

A conversion between incompatible dimensions returns an error. `calc` requires spaces around operators, so expression formatting matters before you run it.

## Install

### Claude Code (native platform)

1. **Skills CLI (Vercel)**
```bash
npx skills add parcadei/Continuous-Claude-v3 --skill pint-compute -a claude-code
```

2. **Manually: put the files in place**
- File: `~/.claude/skills/pint-compute/SKILL.md` — Copy the whole skill folder; for one project use .claude/skills/pint-compute/

### Codex

1. **Skills CLI (Vercel)**
```bash
npx skills add parcadei/Continuous-Claude-v3 --skill pint-compute -a codex
```

2. **Manually: put the files in place**
- File: `.agents/skills/pint-compute/SKILL.md` — For all projects use ~/.agents/skills/

### Cursor

1. **Skills CLI (Vercel)**
```bash
npx skills add parcadei/Continuous-Claude-v3 --skill pint-compute -a cursor
```

2. **Manually: put the files in place**
- File: `.cursor/skills/pint-compute/SKILL.md` — Cursor also reads .agents/skills/ and .claude/skills/

### GitHub Copilot

1. **GitHub CLI**
```bash
gh skill install parcadei/Continuous-Claude-v3 pint-compute
```

2. **Manually: put the files in place**
- File: `.github/skills/pint-compute/SKILL.md`

### Gemini CLI

1. **Skills CLI (Vercel)**
```bash
npx skills add parcadei/Continuous-Claude-v3 --skill pint-compute -a gemini-cli
```

2. **Platform CLI**
```bash
gemini skills install https://github.com/parcadei/Continuous-Claude-v3 --path .claude/skills/pint-compute
```

### Windsurf (Devin Desktop)

**Manually: put the files in place**
- File: `.devin/skills/pint-compute/SKILL.md` — The legacy .windsurf/skills/ path still works

### OpenCode

**Skills CLI (Vercel)**
```bash
npx skills add parcadei/Continuous-Claude-v3 --skill pint-compute -a opencode
```

### Claude.ai

**Claude.ai**
- Zip the folder and upload it in Settings → Capabilities → Skills

Where a file is given instead of a command, copy the files from the source to that path: https://github.com/parcadei/Continuous-Claude-v3/tree/HEAD/.claude/skills/pint-compute/SKILL.md

## When to use it
- convert meters to feet
- add quantities expressed in different units
- calculate distance from velocity and time
- check whether newton matches `kg * m / s^2`
- simplify `kg*m/s^2` notation

## Example prompts
- Convert `100 km/h` to `mph` with Pint.
- Check whether `newton` matches `kg * m / s^2`.
- Calculate `5 meters + 300 cm` while preserving units.

## Source text · SKILL.md · MIT

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BEGIN THIRD-PARTY FILE 017a126efbf334b8
````text
---
name: pint-compute
description: Unit-aware computation with Pint - convert units, dimensional analysis, unit arithmetic
allowed-tools: [Bash, Read]
---

# Unit Computation with Pint

Cognitive prosthetics for unit-aware computation. Use Pint for converting between units, performing unit arithmetic, checking dimensional compatibility, and simplifying compound units.

## When to Use

- Converting between units (meters to feet, kg to pounds)
- Unit-aware arithmetic (velocity x time = distance)
- Dimensional analysis (is force = mass x acceleration?)
- Simplifying compound units to base or named units
- Parsing and analyzing quantities with units

## Quick Reference

| I want to... | Command | Example |
|--------------|---------|---------|
| Convert units | `convert` | `convert "5 meters" --to feet` |
| Unit math | `calc` | `calc "10 m/s * 5 s"` |
| Check dimensions | `check` | `check newton --against "kg * m / s^2"` |
| Parse quantity | `parse` | `parse "100 km/h"` |
| Simplify units | `simplify` | `simplify "1 kg*m/s^2"` |

## Commands

### parse
Parse a quantity string into magnitude, units, and dimensionality.
```bash
uv run python -m runtime.harness scripts/pint_compute.py \
    parse "100 km/h"

uv run python -m runtime.harness scripts/pint_compute.py \
    parse "9.8 m/s^2"
```

### convert
Convert a quantity to different units.
```bash
uv run python -m runtime.harness scripts/pint_compute.py \
    convert "5 meters" --to feet

uv run python -m runtime.harness scripts/pint_compute.py \
    convert "100 km/h" --to mph

uv run python -m runtime.harness scripts/pint_compute.py \
    convert "1 atmosphere" --to pascal
```

### calc
Perform unit-aware arithmetic. Operators must be space-separated.
```bash
uv run python -m runtime.harness scripts/pint_compute.py \
    calc "5 m * 3 s"

uv run python -m runtime.harness scripts/pint_compute.py \
    calc "10 m / 2 s"

uv run python -m runtime.harness scripts/pint_compute.py \
    calc "5 meters + 300 cm"
```

### check
Check if two units have compatible dimensions.
```bash
uv run python -m runtime.harness scripts/pint_compute.py \
    check newton --against "kg * m / s^2"

uv run python -m runtime.harness scripts/pint_compute.py \
    check joule --against "kg * m^2 / s^2"
```

### simplify
Simplify compound units to base or compact form.
```bash
uv run python -m runtime.harness scripts/pint_compute.py \
    simplify "1 kg*m/s^2"

uv run python -m runtime.harness scripts/pint_compute.py \
    simplify "1000 m"
```

## Common Unit Domains

| Domain | Examples |
|--------|----------|
| Length | meter, foot, inch, mile, km, yard |
| Time | second, minute, hour, day, year |
| Mass | kg, gram, pound, ounce, ton |
| Velocity | m/s, km/h, mph, knot |
| Energy | joule, calorie, eV, kWh, BTU |
| Force | newton, pound_force, dyne |
| Temperature | kelvin, celsius, fahrenheit |
| Pressure | pascal, bar, atmosphere, psi |
| Power | watt, horsepower |

## Output Format

All commands return JSON with relevant fields:

```json
{
  "result": "16.4042 foot",
  "magnitude": 16.4042,
  "units": "foot",
  "dimensionality": "[length]",
  "latex": "16.4042\\,\\mathrm{ft}"
}
```

## Error Handling
````
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