How to Convert Bytes to KB, MB, and More in PHP

Name: How to Convert Bytes to KB, MB, and More in PHP
Rating: 1 (1 reviews)
Author: chrism

When working with file sizes or data transfers, converting between units like bytes, kilobytes, and megabytes is a handy skill to have.

This tutorial walks you through creating a simple PHP function to handle these conversions easily.
Starting with a value in bytes, you’ll be able to convert it into bits, KB, MB, or whatever unit you need, making it perfect for applications like file uploads or data usage tracking.

PHP Code

<?php
 
function convert_bytes($bytes, $to = "B") {
    // Ensure $bytes is a float for division
    $float = floatval($bytes);
 
    switch ($to) {
        case "Kb": // Kilobits
            $float = ($float * 8) / 1024;
            break;
        case "b": // Bits
            $float *= 8;
            break;
        case "MB": // Megabytes
            $float /= (1024 * 1024);
            break;
        case "KB": // Kilobytes
            $float /= 1024;
            break;
        default: // Bytes
            break;
    }
 
    // Format the result for better readability
    return number_format($float, 2);
}
 
// Example usage
$bytes = 1608200;
$file_size_kb = convert_bytes($bytes, "KB");
$file_size_mb = convert_bytes($bytes, "MB");
 
echo "File size: $file_size_kb KB";
echo "File size: $file_size_mb MBn";
 
?>

Sample Output:

File size: 1,570.51 KB
File size: 1.53 MB

Author:

chrism

Views:

2,106

Rating:

Posted on Saturday 21^st December 2024 at 07:51 PM

DanielXP

Updated this tutorial to remove the need for a database, and given it a few samples