The US Conversion Rate Calculator is a handy tool designed to help you seamlessly convert between various common units of measurement. Whether you're dealing with distances, weights, or temperatures, this calculator simplifies the process, ensuring accuracy and saving you time. Understanding unit conversions is fundamental in many fields, including science, engineering, cooking, and everyday life.
At its core, unit conversion involves multiplying or dividing a given value by a specific conversion factor. These factors are derived from the defined relationships between different units. For example, to convert meters to feet, you use the factor that 1 meter is approximately equal to 3.28084 feet. The calculator automates these calculations based on established scientific and standard definitions.
Key Conversions Supported:
Length:
Meters to Feet: 1 meter ≈ 3.28084 feet
Kilometers to Miles: 1 kilometer ≈ 0.621371 miles
Miles to Kilometers: 1 mile ≈ 1.60934 kilometers
Feet to Inches: 1 foot = 12 inches
Mass/Weight:
Kilograms to Pounds: 1 kilogram ≈ 2.20462 pounds
Pounds to Kilograms: 1 pound ≈ 0.453592 kilograms
Kilograms to Grams: 1 kilogram = 1000 grams
Ounces to Grams: 1 ounce ≈ 28.3495 grams
Temperature:
Celsius to Fahrenheit: °F = (°C × 9/5) + 32
Fahrenheit to Celsius: °C = (°F – 32) × 5/9
Example Usage
Let's say you have a recipe that calls for 250 grams of flour, but your kitchen scale only measures in pounds. Using the calculator, you would input:
Value to Convert: 250
From Unit: Grams
To Unit: Pounds
The calculator would then process this, telling you that 250 grams is approximately 0.551 pounds.
Another example: You're planning a road trip and want to know how far 300 miles is in kilometers.
Value to Convert: 300
From Unit: Miles
To Unit: Kilometers
The result would be approximately 482.803 kilometers.
This calculator is designed to be intuitive and cover a wide range of common conversion needs, making it an indispensable tool for anyone who works with measurements.
function calculateConversion() {
var valueToConvert = parseFloat(document.getElementById("valueToConvert").value);
var fromUnit = document.getElementById("fromUnit").value;
var toUnit = document.getElementById("toUnit").value;
var resultDiv = document.getElementById("result");
var convertedValue;
if (isNaN(valueToConvert)) {
resultDiv.innerHTML = "Please enter a valid number for the value to convert.";
return;
}
if (fromUnit === toUnit) {
convertedValue = valueToConvert;
} else {
// Length Conversions
if (fromUnit === "meters") {
if (toUnit === "kilometers") convertedValue = valueToConvert / 1000;
else if (toUnit === "miles") convertedValue = valueToConvert / 1609.34;
else if (toUnit === "feet") convertedValue = valueToConvert * 3.28084;
else if (toUnit === "inches") convertedValue = valueToConvert * 39.3701;
else convertedValue = valueToConvert; // Should not happen if fromUnit is meters and toUnit is meters
} else if (fromUnit === "kilometers") {
if (toUnit === "meters") convertedValue = valueToConvert * 1000;
else if (toUnit === "miles") convertedValue = valueToConvert * 0.621371;
else if (toUnit === "feet") convertedValue = valueToConvert * 3280.84;
else if (toUnit === "inches") convertedValue = valueToConvert * 39370.1;
else convertedValue = valueToConvert;
} else if (fromUnit === "miles") {
if (toUnit === "meters") convertedValue = valueToConvert * 1609.34;
else if (toUnit === "kilometers") convertedValue = valueToConvert * 1.60934;
else if (toUnit === "feet") convertedValue = valueToConvert * 5280;
else if (toUnit === "inches") convertedValue = valueToConvert * 63360;
else convertedValue = valueToConvert;
} else if (fromUnit === "feet") {
if (toUnit === "meters") convertedValue = valueToConvert / 3.28084;
else if (toUnit === "kilometers") convertedValue = valueToConvert / 3280.84;
else if (toUnit === "miles") convertedValue = valueToConvert / 5280;
else if (toUnit === "inches") convertedValue = valueToConvert * 12;
else convertedValue = valueToConvert;
} else if (fromUnit === "inches") {
if (toUnit === "meters") convertedValue = valueToConvert / 39.3701;
else if (toUnit === "kilometers") convertedValue = valueToConvert / 39370.1;
else if (toUnit === "miles") convertedValue = valueToConvert / 63360;
else if (toUnit === "feet") convertedValue = valueToConvert / 12;
else convertedValue = valueToConvert;
}
// Mass/Weight Conversions
else if (fromUnit === "pounds") {
if (toUnit === "kilograms") convertedValue = valueToConvert * 0.453592;
else if (toUnit === "grams") convertedValue = valueToConvert * 453.592;
else if (toUnit === "ounces") convertedValue = valueToConvert * 16;
else convertedValue = valueToConvert;
} else if (fromUnit === "kilograms") {
if (toUnit === "pounds") convertedValue = valueToConvert * 2.20462;
else if (toUnit === "grams") convertedValue = valueToConvert * 1000;
else if (toUnit === "ounces") convertedValue = valueToConvert * 35.274;
else convertedValue = valueToConvert;
} else if (fromUnit === "grams") {
if (toUnit === "pounds") convertedValue = valueToConvert / 453.592;
else if (toUnit === "kilograms") convertedValue = valueToConvert / 1000;
else if (toUnit === "ounces") convertedValue = valueToConvert / 28.3495;
else convertedValue = valueToConvert;
} else if (fromUnit === "ounces") {
if (toUnit === "pounds") convertedValue = valueToConvert / 16;
else if (toUnit === "kilograms") convertedValue = valueToConvert / 35.274;
else if (toUnit === "grams") convertedValue = valueToConvert * 28.3495;
else convertedValue = valueToConvert;
}
// Temperature Conversions
else if (fromUnit === "fahrenheit") {
if (toUnit === "celsius") convertedValue = (valueToConvert – 32) * 5 / 9;
else convertedValue = valueToConvert;
} else if (fromUnit === "celsius") {
if (toUnit === "fahrenheit") convertedValue = (valueToConvert * 9 / 5) + 32;
else convertedValue = valueToConvert;
} else {
// Handle cases where units are the same or not covered by specific branches
convertedValue = valueToConvert;
}
}
resultDiv.innerHTML = "Result: " + convertedValue.toFixed(4) + " " + toUnit;
}