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To always have the latest version use:

// @require      https://update.greasyfork.org/scripts/519002/Units%20Converter.js

Units Supported

The library supports 27 units of measurements that are:

• Inches
• Centimeters
• Meters
• Feet
• Kilograms
• Pounds
• Ounces
• Grams
• Fluid ounces
• Kilometers per hour
• Miles per hour
• °C
• °F
• Milliliters
• Liters
• Gallons
• Yards
• Millimeters
• Kilometers
• Miles
• Kilowatts
• Mechanical HorsePower
• Miles per Gallon
• Liters per 100 Kilometers
• Liquid Quarts
• Foot-Pounds
• Newton-Meters

The conversions are:

Conversion	Example Input	Example Output
Inches ⇄ Centimeters	72in, 72″	182.88 cm
Millimeters ➜ Inches	50mm	1.97in
Meters ⇄ Feet	6.50 ft	1.98 m
Yards ➜ Meters	239 yd	218.46 m
Ounces ⇄ Grams	1.76 oz	49.90 g
Kilometers ⇄ Miles	60mi	96.54 km
Kilometers per hour ⇄ Miles per hour	62.14mph	99.98 km/h
°F ⇄ °C	39°C	102.20°F
Milliliters ⇄ Fluid ounces	49.98 ml	1.69 fl
Liters ⇄ Gallons	2.06 gal	7.80 l
Kilowatts ⇄ Mechanical HorsePower	700kW	938.70 mhp
Miles per Gallon ⇄ Liters per 100 Kilometers	33.6mpg	7l/100km
Liquid Quarts ⇄ Liters	4 qt	3.78 l
Foot-Pounds ⇄ Newton-Meters	250lb ft	338.95 N·m

Unit Conversion Library Documentation

Overview

This library provides a simple framework to convert units of measurement for the script https://greasyfork.org/en/scripts/419825. It supports various unit types (e.g., length, weight, volume, temperature) and handles conversions with single or compound values.

To see the latest const Units regex and a real usage scenario check https://greasyfork.org/en/scripts/419825.

Features

1. Unit Conversion: Converts a numeric value from one unit to another.
   
2. Compound Conversions: Handles cases with two values (e.g., "10x20 inches").
   
3. Exponential Operations: Supports calculations like powers (e.g., "5^3").
   
4. Unit Recognition: Uses a regex pattern to identify units and values from text input.

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Usage

Example Input

"150 pounds" → Outputs: "68.03 kg"
"10x20 inches" → Outputs: "25.40 x 50.80 cm"
"5^3" → Outputs: "125 power"

Main Functions

1. Regex Matching for Units

   const UnitType = "150 pounds".match(Units)[3].toLowerCase(); // Extracts the unit type
   

2. Value Extraction

   const Units = new RegExp(
   /^[ \t\xA0]*(-?\d+(?:[., ]\d+)?)(?:[ \t\xA0]*x[ \t\xA0]*(-?\d+(?:[., ]\d+)?))?[ \t\xA0]*
   (in|inch|inches|"|”|″|cm|cms|centimeters? \ |m|mt|mts|meters?|ft|kg|lbs?|pounds?|kilograms?|ounces?|
   g|ozs?|fl oz|fl oz (us)|fluid ounces?|kphs?|km\/h|kilometers per hours?|mhp|mphs?|meters per hours?|
   (?:°\s?|º\s?|)(?:degrees?\s+)?(?:celsius|fahrenheit|[CF])|km\/hs?|ml|milliliters?|l|liters?|litres?|
   gal|gallons?|yards?|yd|Millimeter|millimetre|kilometers?|mi|mm|miles?|km|ft|fl|feets?|grams?|kilowatts?|
   kws?|brake horsepower|mechanical horsepower|hps?|bhps?|miles per gallons?|mpgs?|liters per 100 kilometers?|
   lt?\/100km|liquid quarts?|lqs?|qt|foot-? ?pounds?|ft-?lbs?|lb fts?|newton-? ?meters?|n·?m|\^\d+)
   [ \t\xA0]*(?:\(\w+\)[ \t\xA0]*)?$/i
   );
   

   const UnitValue = "150 pounds".match(Units)[1].replaceAll(',', '.'); // Extracts numeric value
   const SecondUnitValue = "150 pounds".match(Units)[2]?.replaceAll(',', '.') || 0; // Extracts second value if present
   

3. Value Conversion

   const convertValue = (value, unitType) => {
   const { factor, convert } = window.UConv[unitType] || {};
   return convert ? convert(value) : value * factor; // Converts value using factor or custom function
   };
   

4. New Unit Detection

   const NewUnit = window.UConv[UnitType]?.unit || UnitType; // Detects target unit
   

5. Final Conversion Output

   const ConvertedUnit = `${convertValue(parseFloat(UnitValue), UnitType).toFixed(2)}${SecondUnitValue != 0 ? ` x ${convertValue(parseFloat(
   SecondUnitValue), UnitType).toFixed(2)}` : ''}`; // Formats output
   

6. Special Cases

   const ConvertedUnit = "5^3".match(/\^(\d+\.?\d*)/)
   ? (NewUnit = 'power', Math.pow(parseFloat(UnitValue), parseFloat("5^3".match(/\^(\d+\.?\d*)/)[1])))
   : ConvertedUnit; // Handles powers
   

7. Display Conversion

   ShowConvertion('Units', NewUnit, ConvertedUnit); // Displays r###lt
   

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Adding New Units

To add new units, modify the addConversion function in the UConv library:

addConversion(['unit1', 'unit2'], 'targetUnit', conversionFactor, optionalConvertFunction);

Example:

addConversion(['pound', 'lb'], 'kg', 0.453592); // Adds "pound" conversion to kilograms

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How It Works

1. Input Parsing: Uses regex to extract unit type and numeric values from text input.
   
2. Conversion: Fetches the appropriate conversion factor or custom function from UConv.
   
3. Output: Returns the converted value in the desired format, supporting both compound and exponential cases.

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