JavaScript SizeToHuman size conversion to mb kb tb etc.

// byte data unit conversion (base B)
function bytesToSize(bytes) {
    if (bytes === 0) return '0 B';
    var k = 1024, // or 1000
        sizes = ['B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'],
        i = Math.floor(Math.log(bytes) / Math.log(k));

    return (bytes / Math.pow(k, i)).toFixed(1) + ' ' + sizes[i];
}
// byte data unit conversion (based on M)
function megabytesToSize(bytes) {
    if (bytes === 0) return '0 MB';
    var k = 1024, // or 1000
        sizes = ['MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'],
        i = Math.floor(Math.log(bytes) / Math.log(k));

    return (bytes / Math.pow(k, i)).toFixed(0) + ' ' + sizes[i];
}
// byte data unit conversion (based on G)
function gbytesToSize(bytes) {
    if (bytes === 0) return '0 GB';
    var k = 1024, // or 1000
        sizes = ['GB', 'TB', 'PB', 'EB', 'ZB', 'YB'],
        i = Math.floor(Math.log(bytes) / Math.log(k));

    return (bytes / Math.pow(k, i)).toFixed(0) + ' ' + sizes[i];
}