Convert between feet and inches and total inches or centimeters.
Result: —
Understanding Feet and Inches Conversions
The Feet and Inches Calculator is a practical tool for converting measurements expressed in feet and inches into a single unit, either total inches or total centimeters. This is fundamental in many fields, including construction, interior design, tailoring, manufacturing, and everyday measurements.
The Math Behind the Conversion
The conversion relies on two primary standard equivalencies:
1 foot = 12 inches
1 inch = 2.54 centimeters
To convert a measurement from feet and inches into total inches:
Total Inches = (Number of Feet × 12) + Number of Inches
To convert the total inches into centimeters:
Total Centimeters = Total Inches × 2.54
How to Use the Calculator
Enter the number of whole feet into the "Feet" input field.
Enter the remaining inches into the "Inches" input field.
Click the "Convert" button.
The calculator will display the equivalent measurement in total inches and then convert that to total centimeters.
Use Cases
Construction & DIY: Calculating lumber lengths, room dimensions, or material needs.
Interior Design: Determining furniture sizes, rug dimensions, or wall hangings relative to room space.
Tailoring & Fashion: Measuring fabric, garment lengths, or patterns.
Fitness: Recording personal height measurements in a standardized format.
Logistics: Specifying dimensions for shipping or storage.
This calculator simplifies these common tasks, providing accurate conversions swiftly and efficiently.
function calculateConversion() {
var feetInput = document.getElementById("feet");
var inchesInput = document.getElementById("inches");
var resultDiv = document.getElementById("result");
var feet = parseFloat(feetInput.value);
var inches = parseFloat(inchesInput.value);
var totalInches = 0;
var totalCentimeters = 0;
var errorMessage = "";
// Validate feet input
if (isNaN(feet) || feet < 0) {
errorMessage += "Please enter a valid non-negative number for feet. ";
feet = 0; // Reset to 0 if invalid to allow inches calculation
}
// Validate inches input
if (isNaN(inches) || inches < 0) {
errorMessage += "Please enter a valid non-negative number for inches. ";
inches = 0; // Reset to 0 if invalid
}
if (errorMessage) {
resultDiv.innerHTML = 'Error: ' + errorMessage + '';
return;
}
// Perform calculation: Convert feet to inches and add the remaining inches
totalInches = (feet * 12) + inches;
// Convert total inches to centimeters
totalCentimeters = totalInches * 2.54;
// Display the results, formatted to 2 decimal places for centimeters
resultDiv.innerHTML = 'Result: ' + totalInches.toFixed(0) + ' inches / ' + totalCentimeters.toFixed(2) + ' cm';
}