Size of Index in Elastic Search

Elastic Stack Elasticsearch
5

http://rajeevpc:9200/networkteamindex2/_stats/store gives this

{"_shards":{"total":10,"successful":5,"failed":0},"_all":{"primaries":{"store":{"size_in_bytes":650,"throttle_time_in_millis":0}},"total":{"store":{"size_in_bytes":650,"throttle_time_in_millis":0}}},"indices":{"networkteamindex2":{"primaries":{"store":{"size_in_bytes":650,"throttle_time_in_millis":0}},"total":{"store":{"size_in_bytes":650,"throttle_time_in_millis":0}}}}}

But I was expecting something like the output of
http://localhost:9200/_cat/indices?h=index,store.size
in form of
myindex 650b
.kibana 62.9kb
with decimal upto 2 digit .so that I can parse it easily .

I am currently using ES2.1.1