Convert a sustained network transfer rate into daily and period data volume. This is useful when a monitoring tool reports Mbps but a carrier, cloud provider, or storage plan bills in GB or TB. The estimate accounts for active hours and average utilization, then shows daily usage, total usage, and the equivalent continuous average rate for the whole period.
Period usage is the estimated payload-equivalent volume transferred at the entered average rate. Decimal units are used: 1 GB equals 1,000 MB and 1 TB equals 1,000 GB.
This estimate does not automatically add protocol headers, retransmissions, backups, or replication. Increase the utilization/rate assumption or add those volumes separately when they are billable.
At 100 Mbps for 8 hours per day, 30 days, and 60% utilization, daily usage is 216 GB and period usage is 6,480 GB, or 6.48 TB. The whole-period average is 20 Mbps.
At continuous full utilization, 100 Mbps transfers 45 GB in one hour using decimal units.
Only if the entered rate represents their combined measured throughput. Otherwise calculate each direction separately.
The Mbps input is the active line rate; utilization represents the average fraction of that rate actually used during active hours.
The calculator uses decimal network units: 1 TB equals 1,000 GB.
It can, depending on the provider and measurement point. Add an allowance if headers, retransmissions, or encapsulation are counted.
| Variable | Meaning | Unit |
|---|---|---|
| R | Active transfer rate | Mbps |
| h | Active time per day | hours |
| d | Operating period | days |
| u | Average active utilization | % |