name: unit-converter
description: Convert between physical units (length, mass, temperature, time, etc.). Use for scientific calculations, data transformation, or unit standardization.

Unit Converter

Convert between units across multiple physical dimensions.

Features

• Multiple Categories: Length, mass, temperature, time, volume, etc.
• Compound Units: Speed, density, pressure
• Precision Control: Configurable decimal places
• Batch Conversion: Convert lists of values
• Formula Display: Show conversion formulas

Quick Start

from unit_converter import UnitConverter

converter = UnitConverter()

# Simple conversion
result = converter.convert(100, "km", "miles")
print(f"100 km = {result:.2f} miles")

# With full details
result = converter.convert_with_details(72, "fahrenheit", "celsius")
print(result)

CLI Usage

# Basic conversion
python unit_converter.py 100 km miles

# Temperature
python unit_converter.py 98.6 fahrenheit celsius

# With precision
python unit_converter.py 1.5 kg lbs --precision 4

# List supported units
python unit_converter.py --list

# List units in category
python unit_converter.py --list length

# Show formula
python unit_converter.py 100 cm inches --formula

API Reference

UnitConverter Class

class UnitConverter:
    def __init__(self)

    # Conversion
    def convert(self, value: float, from_unit: str, to_unit: str) -> float
    def convert_with_details(self, value: float, from_unit: str, to_unit: str) -> dict
    def batch_convert(self, values: list, from_unit: str, to_unit: str) -> list

    # Information
    def list_categories(self) -> list
    def list_units(self, category: str = None) -> dict
    def get_formula(self, from_unit: str, to_unit: str) -> str
    def find_unit(self, query: str) -> list

Supported Categories

Length

Mass

Temperature

Time

Volume

Area

Speed

Digital Storage

Energy

Example Workflows

Batch Conversion

converter = UnitConverter()
weights_kg = [50, 75, 100, 125]
weights_lbs = converter.batch_convert(weights_kg, "kg", "lbs")
for kg, lbs in zip(weights_kg, weights_lbs):
    print(f"{kg} kg = {lbs:.1f} lbs")

Find Compatible Units

converter = UnitConverter()
# Search for units
matches = converter.find_unit("meter")
# Returns: ['meter', 'kilometer', 'centimeter', ...]

Get Conversion Formula

converter = UnitConverter()
formula = converter.get_formula("celsius", "fahrenheit")
print(formula)  # "F = (C × 9/5) + 32"

Output Format

convert_with_details()

{
    "value": 100,
    "from_unit": "km",
    "to_unit": "miles",
    "result": 62.1371,
    "formula": "miles = km × 0.621371",
    "category": "length"
}

Dependencies

No external dependencies - uses Python standard library.