Download Time Calculator
Estimated download time from file size and connection speed.
Enter your values
ⓘ Live results
Results
- Estimated time
- 8.9 minutes
- Estimated time
- 537 seconds
- Effective throughput
- 80 Mbps
Quick answer
Time = file size (in bits) / connection speed (in bits per second).
t = size / speed
How to use the Download Time Calculator
- 1Enter the file size in gigabytes.
- 2Enter your connection's rated speed in megabits per second (Mbps, not MB/s).
- 3Apply a real-world efficiency factor since actual throughput is usually below the rated speed.
Worked example
Using the values the calculator loads with:
Inputs
- File size5 GB
- Connection speed100 Mbps
- Real-world efficiency80 %
Results
- Estimated time8.9 minutes
- Estimated time537 seconds
- Effective throughput80 Mbps
Frequently asked questions
Why is my download slower than my plan speed?
Rated speed is in megabits, not megabytes, and overhead, Wi-Fi and server limits also reduce real throughput.
How do I convert Mbps to MB/s?
Divide by 8: a 100 Mbps connection can theoretically reach about 12.5 MB/s.
About this calculator
- Built and reviewed by James Whitfield · How we build and test calculators
- Report an error
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.