⚡ Mbps Calculator
Convert between file size, download time, and network speed.
Enter the file size and download time to find the required Mbps speed. Alternatively, provide the network speed to estimate how long a download will take.
Calculate Mbps from File Size & Time
Required Speed
93.333 Mbps
Equivalent MB/s
11.667 MB/s
MB/s = Mbps ÷ 8 (decimal units). Useful for comparing with download manager readouts.
Estimate Download Time from Mbps
Enter the actual throughput (not the advertised maximum) for more accurate estimates.
Download Time
59.57 seconds
Minutes
0.99 minutes
Multiply further for hours if needed (minutes ÷ 60).
How to Use This Calculator
Pick a file size
Use MB or GB for simplicity. The calculator converts it to bits behind the scenes.
Enter either time or Mbps
Provide download time to compute Mbps, or enter Mbps to estimate download time.
Apply the result
Use the Mbps value to evaluate ISP plans, or the time estimate to determine how long a download will take.
Formula
Mbps = (File Size (bits)) ÷ (Time (seconds) × 10⁶)
Time (seconds) = File Size (bits) ÷ (Mbps × 10⁶)
1 byte = 8 bits. MB/s (decimal) = Mbps ÷ 8. For GiB/MiB conversions, multiply by 1,024-based factors instead.
Use the formula breakdown to confirm the calculation logic or perform the conversion manually if needed.
Full Description
Estimating download durations or required network throughput helps plan large file transfers, streaming setups, and backups. This calculator bridges file sizes and network speeds using standard decimal units (MB, GB, Mbps).
It’s especially useful when comparing ISP packages, planning content delivery, or communicating expectations to clients and team members.
Remember that real-world throughput may be lower than the theoretical maximum due to overhead and shared bandwidth.
Frequently Asked Questions
Why use decimal units (MB, Mbps)?
ISPs and storage vendors typically advertise decimal units (1 MB = 1,000,000 bytes). Adjust manually if you need binary (MiB, Mib).
Does the calculator account for overhead?
No. It assumes ideal throughput. For more accurate estimates, reduce Mbps by ~10% to account for protocol overhead.
Can I enter very large files?
Yes—within JavaScript’s numeric limits. For multi-terabyte transfers, ensure your browser handles the large numbers.
Why is MB/s shown?
Download managers and operating systems often report MB/s. Comparing Mbps and MB/s helps reconcile the figures.