AWS E2 Instance : How to Resize Disk

I have question about my disk partition,

here is the result from fdisk -l command

Disk /dev/loop0: 4294 MB, 4294967296 bytes
255 heads, 63 sectors/track, 522 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000


Disk /dev/xvda: 536.9 GB, 536870912000 bytes
255 heads, 63 sectors/track, 65270 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00050d75

    Device Boot      Start         End      Blocks   Id  System
/dev/xvda1   *           1       26109   209714176   83  Linux

As you can see, i have 500GB space (/dev/xvda) and it is using only 200GB (/dev/xvda1).

here is the result from lsblk command
NAME    MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
loop0     7:0    0    4G  0 loop /tmp
xvda    202:0    0  500G  0 disk
└─xvda1 202:1    0  200G  0 part /

Here you can see i have 500GB disk,

My question is , How i can resize xvda1 so it can use it available space OR How i can can create new disk space to use more space.

My aim is to increase the disk space but dont know how this is possible.