Bandwidth Calculator
Time to transfer a file or the bandwidth needed, from file size and connection speed.
Compare Your Options And Get Clear Answers
Time to transfer a file or the bandwidth needed, from file size and connection speed.
Bandwidth Estimator
Enter your numbers below for an instant estimate.
How It Works
Key concepts behind this calculator
Enter Values
Fill in each field with your own numbers.
Calculate
Results update as you change the inputs.
Review
Read the breakdown and the explanation.
Adjust
Change values to compare scenarios.
Bandwidth Quick Guide
Typical values for reference.
| Size GB | Mbps | Efficiency % | Time |
|---|---|---|---|
| 1 | 100 | 85 | 0h 1m 34s |
| 5 | 100 | 85 | 0h 7m 51s |
| 50 | 100 | 85 | 1h 18m 26s |
| 200 | 1000 | 85 | 0h 31m 22s |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Bandwidth Calculator FAQ
Answers to common questions about this calculator.
About 8 minutes at 100 Mbps with real-world overhead.
Protocol overhead, congestion and server limits.
Time = size in bits / (speed x efficiency).
It is an estimate based on the inputs you enter. Check real quotes, labels or official guidance for important decisions.