formatBytes value to KB, MB, GB string

by Yury

HTML

<p>
formatBytes value to KB, MB, GB string
</p>

CSS

* {
  background: #1e1e1e;
  font-family: sans-serif;
  color: #c0c0c0;
  text-align: center;
}

JavaScript

public static formatBytes(bytes, decimals) {
    if (bytes === 0) return '0 Bytes';
    const k = 1024;
    const dm = decimals || 2;
    const sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'];
    const i = Math.floor(Math.log(bytes) / Math.log(k));

    return parseFloat((bytes / Math.pow(k, i)).toFixed(dm)) + ' ' + sizes[i];
  }