qalc

name	qalc
description	Use this skill when the user needs to do calculations, convert units (length, mass, temperature), convert currencies, solve equations, or perform mathematical operations from the command line.

qalc Plugin

Powerful command-line calculator from Qalculate!. Non-interactive with --terse for clean output.

Commands

Math

• qalc calc eval '5 + 2 * 3' — Basic arithmetic
• qalc calc eval 'sin(45deg)' — Trigonometry
• qalc calc eval 'sqrt(144)' — Square root
• qalc calc eval 'log(100)' — Logarithms
• qalc calc eval '2^10' — Exponentiation
• qalc calc eval 'factorial(10)' — Factorial

Unit Conversion

• qalc convert units '100 meters to feet' — Length
• qalc convert units '1 gallon to liters' — Volume
• qalc convert units '50 celsius to fahrenheit' — Temperature
• qalc convert units '10 kg to pounds' — Mass/Weight

Currency

• qalc convert currency '100 EUR to USD' — Euro to Dollar
• qalc convert currency '50 GBP to JPY' — Pound to Yen

Equation Solving

• qalc solve equation 'x^2 - 4 = 0' — Quadratic equation
• qalc solve equation '2*x + 5 = 13' — Linear equation

Reference

• qalc list units length — List length units
• qalc list functions trig — List trig functions

Full Access

• qalc _ _ — Passthrough for any qalc command

Usage Examples

• "What's 25 * 4.5?"
• "Convert 100 meters to feet"
• "How much is 50 EUR in USD?"
• "Solve x^2 + 3x - 10 = 0"
• "List all temperature units"

Installation

brew install qalculate-tools

Key Features

• Non-interactive: qalc -t 'expression' prints result and exits
• Terse output: -t flag gives clean result only — agent-friendly
• 2000+ units: Length, mass, volume, temperature, time, and more
• Currency: Real-time exchange rates
• Equations: Solve linear, quadratic, differential equations
• Functions: Trig, log, stats, calculus, and custom functions
• Physical constants: Speed of light, Planck constant, etc.