Metric System Converter
:root {
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–success-green: #28a745;
–light-background: #f8f9fa;
–white: #ffffff;
–gray-border: #ced4da;
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body {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
background-color: var(–light-background);
color: #333;
line-height: 1.6;
margin: 0;
padding: 20px;
display: flex;
flex-direction: column;
align-items: center;
}
.loan-calc-container {
background-color: var(–white);
padding: 30px;
border-radius: 8px;
box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
max-width: 700px;
width: 100%;
margin-bottom: 30px;
}
h1, h2 {
color: var(–primary-blue);
text-align: center;
margin-bottom: 25px;
}
.input-group {
margin-bottom: 20px;
display: flex;
flex-direction: column;
}
.input-group label {
margin-bottom: 8px;
font-weight: bold;
color: #555;
}
.input-group input[type="number"],
.input-group select {
padding: 12px;
border: 1px solid var(–gray-border);
border-radius: 4px;
font-size: 1rem;
box-sizing: border-box; /* Ensures padding doesn't affect width */
transition: border-color 0.2s ease-in-out;
}
.input-group input[type="number"]:focus,
.input-group select:focus {
outline: none;
border-color: var(–primary-blue);
box-shadow: 0 0 0 2px rgba(0, 74, 153, 0.25);
}
.btn-calculate {
display: block;
width: 100%;
padding: 15px;
background-color: var(–primary-blue);
color: var(–white);
border: none;
border-radius: 4px;
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font-weight: bold;
cursor: pointer;
transition: background-color 0.2s ease-in-out;
margin-top: 10px;
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.btn-calculate:hover {
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.result-container {
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color: var(–white);
padding: 25px;
border-radius: 8px;
text-align: center;
margin-top: 25px;
box-shadow: inset 0 2px 5px rgba(0,0,0,0.1);
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.result-container h3 {
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margin-bottom: 15px;
color: var(–white);
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.result-value {
font-size: 2.5rem;
font-weight: bold;
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.article-section {
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/* Responsive adjustments */
@media (max-width: 600px) {
.loan-calc-container, .article-section {
padding: 20px;
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h1 {
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.btn-calculate {
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padding: 12px;
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}
Metric System Unit Converter
Value to Convert:
From Unit:
Meter (m)
Kilometer (km)
Centimeter (cm)
Millimeter (mm)
Mile (mi)
Foot (ft)
Inch (in)
Kilogram (kg)
Gram (g)
Milligram (mg)
Pound (lb)
Ounce (oz)
Celsius (°C)
Fahrenheit (°F)
To Unit:
Meter (m)
Kilometer (km)
Centimeter (cm)
Millimeter (mm)
Mile (mi)
Foot (ft)
Inch (in)
Kilogram (kg)
Gram (g)
Milligram (mg)
Pound (lb)
Ounce (oz)
Celsius (°C)
Fahrenheit (°F)
Convert
Understanding the Metric System and Unit Conversion
The metric system, formally known as the International System of Units (SI), is a globally adopted standard for measurement. It's designed for simplicity and consistency, based on powers of 10. This makes conversions between units within the metric system straightforward. Common metric units include meters (length), kilograms (mass), and degrees Celsius (temperature).
Why Unit Conversion is Important
Unit conversion is essential for several reasons:
Communication: Different regions or industries might use different units. Conversion ensures clear understanding when sharing data or collaborating.Scientific and Engineering Accuracy: Precise calculations in science and engineering often require all values to be in the same unit system to avoid errors.Everyday Life: From following recipes (e.g., converting ounces to grams) to understanding travel distances, unit conversion helps us interpret information accurately.
Conversion Logic
This calculator handles conversions between common metric and imperial units for length, mass, and temperature. The underlying logic involves applying specific conversion factors.
Length Conversions:
1 Meter (m) = 100 Centimeters (cm) = 1000 Millimeters (mm)
1 Kilometer (km) = 1000 Meters (m)
1 Mile (mi) ≈ 1609.34 Meters (m)
1 Foot (ft) ≈ 0.3048 Meters (m)
1 Inch (in) ≈ 0.0254 Meters (m)
To convert between any two length units, we typically convert the source value to a base unit (like meters) and then convert from the base unit to the target unit. For example, to convert feet to centimeters: Feet -> Meters -> Centimeters.
Mass Conversions:
1 Kilogram (kg) = 1000 Grams (g) = 1,000,000 Milligrams (mg)
1 Pound (lb) ≈ 0.453592 Kilograms (kg)
1 Ounce (oz) ≈ 0.0283495 Kilograms (kg) or 1/16th of a pound
Similar to length, mass conversions often use kilograms as a base unit. For example, to convert grams to pounds: Grams -> Kilograms -> Pounds.
Temperature Conversions:
Celsius to Fahrenheit: °F = (°C × 9/5) + 32Fahrenheit to Celsius: °C = (°F - 32) × 5/9
Temperature conversions are not linear like length or mass and require specific formulas.
Example Usage
Let's say you want to convert 5 miles to kilometers:
Input 5 in the "Value to Convert" field.
Select "Mile (mi)" for "From Unit".
Select "Kilometer (km)" for "To Unit".
Click "Convert".
The calculator will perform the conversion, resulting in approximately 8.0467 kilometers.
Another example: converting 100 Fahrenheit to Celsius:
Input 100 in the "Value to Convert" field.
Select "Fahrenheit (°F)" for "From Unit".
Select "Celsius (°C)" for "To Unit".
Click "Convert".
The result will be approximately 37.78 degrees Celsius.
function getElementById(id) {
return document.getElementById(id);
}
function convertUnit() {
var value = parseFloat(getElementById("value").value);
var fromUnit = getElementById("fromUnit").value;
var toUnit = getElementById("toUnit").value;
var resultValue = 0;
var resultUnit = ";
if (isNaN(value)) {
alert("Please enter a valid number for the value.");
return;
}
// Base conversion factors to a common base unit (meters for length, kg for mass)
// Using meters as base for length
var meters = 0;
if (fromUnit === "meter") meters = value;
else if (fromUnit === "kilometer") meters = value * 1000;
else if (fromUnit === "centimeter") meters = value / 100;
else if (fromUnit === "millimeter") meters = value / 1000;
else if (fromUnit === "mile") meters = value * 1609.34;
else if (fromUnit === "foot") meters = value * 0.3048;
else if (fromUnit === "inch") meters = value * 0.0254;
// Convert from base meters to target unit
if (fromUnit === "meter" || fromUnit === "kilometer" || fromUnit === "centimeter" || fromUnit === "millimeter" || fromUnit === "mile" || fromUnit === "foot" || fromUnit === "inch") {
if (toUnit === "meter") resultValue = meters;
else if (toUnit === "kilometer") resultValue = meters / 1000;
else if (toUnit === "centimeter") resultValue = meters * 100;
else if (toUnit === "millimeter") resultValue = meters * 1000;
else if (toUnit === "mile") resultValue = meters / 1609.34;
else if (toUnit === "foot") resultValue = meters / 0.3048;
else if (toUnit === "inch") resultValue = meters / 0.0254;
resultUnit = toUnit;
}
// Base conversion factors to a common base unit (kilograms for mass)
// Using kilograms as base for mass
var kilograms = 0;
if (fromUnit === "kilogram") kilograms = value;
else if (fromUnit === "gram") kilograms = value / 1000;
else if (fromUnit === "milligram") kilograms = value / 1000000;
else if (fromUnit === "pound") kilograms = value * 0.453592;
else if (fromUnit === "ounce") kilograms = value * 0.0283495;
// Convert from base kilograms to target unit
if (fromUnit === "kilogram" || fromUnit === "gram" || fromUnit === "milligram" || fromUnit === "pound" || fromUnit === "ounce") {
if (toUnit === "kilogram") resultValue = kilograms;
else if (toUnit === "gram") resultValue = kilograms * 1000;
else if (toUnit === "milligram") resultValue = kilograms * 1000000;
else if (toUnit === "pound") resultValue = kilograms / 0.453592;
else if (toUnit === "ounce") resultValue = kilograms / 0.0283495;
resultUnit = toUnit;
}
// Temperature conversions
if (fromUnit === "celsius") {
if (toUnit === "celsius") resultValue = value;
else if (toUnit === "fahrenheit") resultValue = (value * 9/5) + 32;
resultUnit = toUnit;
} else if (fromUnit === "fahrenheit") {
if (toUnit === "fahrenheit") resultValue = value;
else if (toUnit === "celsius") resultValue = (value – 32) * 5/9;
resultUnit = toUnit;
}
// Handle same unit conversion
if (fromUnit === toUnit) {
resultValue = value;
resultUnit = toUnit;
}
// Display the result
getElementById("convertedValue").innerText = resultValue.toFixed(5); // Display with 5 decimal places for precision
getElementById("resultUnit").innerText = getUnitName(resultUnit);
getElementById("result").style.display = "block";
}
function getUnitName(unitKey) {
switch(unitKey) {
case "meter": return "Meters (m)";
case "kilometer": return "Kilometers (km)";
case "centimeter": return "Centimeters (cm)";
case "millimeter": return "Millimeters (mm)";
case "mile": return "Miles (mi)";
case "foot": return "Feet (ft)";
case "inch": return "Inches (in)";
case "kilogram": return "Kilograms (kg)";
case "gram": return "Grams (g)";
case "milligram": return "Milligrams (mg)";
case "pound": return "Pounds (lb)";
case "ounce": return "Ounces (oz)";
case "celsius": return "Degrees Celsius (°C)";
case "fahrenheit": return "Degrees Fahrenheit (°F)";
default: return unitKey;
}
}