Calculator

Evaluates arithmetic expressions and converts length, weight, and temperature units.

1|Updated Feb 24, 2026

Search Tags:#conversion #calculator #math #arithmetic #units

Ready to run

npx skills add https://github.com/xurenlu/marstaff --skill calculator-xurenlu

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: Calculator
Source: https://github.com/xurenlu/marstaff/tree/main/skills/calculator
Command: npx skills add https://github.com/xurenlu/marstaff --skill calculator-xurenlu

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill simplifies complex mathematical operations and unit conversions, saving users time and reducing the potential for manual calculation errors.

Core Features & Use Cases

Mathematical Calculations: Handles basic arithmetic, powers, square roots, and more.
Unit Conversions: Supports conversions across various categories like length, weight, and temperature.
Use Case: Quickly calculate a 15% tip on a bill, convert miles to kilometers for travel planning, or solve complex scientific formulas.

Quick Start

Use the calculator skill to evaluate the expression 25 * (10 + 5) / 3.

Frequently Asked Questions about Calculator

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I perform mathematical calculations and unit conversions in one place?▼

Mathematical calculations and unit conversions are handled through expression evaluation and unit transformation. You can compute basic arithmetic, powers, and square roots, then convert length, weight, or temperature units within the same workflow.

What unit conversions does this calculator support?▼

This calculator supports unit conversions across length, weight, and temperature categories. It transforms values by evaluating the source and target units to return the converted measurement result.

Can I evaluate complex arithmetic expressions like 25 * (10 + 5) / 3?▼

Complex arithmetic expressions like 25 * (10 + 5) / 3 are evaluated accurately. The calculator processes the expression string to return the final mathematical result without manual step-by-step computation.

What's the best way to convert miles to kilometers for travel planning?▼

Converting miles to kilometers for travel planning is done by specifying the length value and target unit. The calculator transforms the input length to return the precise kilometer equivalent.

Does this calculator support advanced operations like powers and square roots?▼

Advanced arithmetic operations including powers and square roots are supported. The calculator evaluates these advanced mathematical expressions alongside basic arithmetic to return accurate computation results.