how much data can we download with 1Gbps bandwidth internet connection

 1Gbps is equal to1000 Mbps

1Mbps =1000kilo bits per second/8=125Kilo Bytes per second = 125KB data per second

1GB =1000Mbps = 1000X125=125000KB=125MB=0.125GB per second X60x60 = 450GB per hour.

per day = 450GBX24=10800GB=10.8TB

per month = 30X10.8=324TB per month.