File Transfer Time Calculator

Calculate local network (LAN) and hardware bus transfer times across USB 2.0, USB 3.0, Thunderbolt, and Ethernet.

File Transfer Time Calculator Live Calculation
Estimated Transfer Duration:
2 mins, 23 secs
Interface Sustained Rate:350 MB/s
Total Seconds:142.86 secs
Calculation Formula:50,000 MB ÷ 350 MB/s = 142.9 seconds

What is the File Transfer Time Calculator?

Helps video editors, backup engineers, and IT technicians determine how long physical drives and local network transfers will take.

How to Use This Tool

Select your transfer interface preset (e.g. USB 3.0, Gigabit LAN, 10GbE, Thunderbolt 4) or enter custom speed, then specify file size.

Formula & Calculation Logic

The mathematical formula used to calculate this conversion is:

Transfer Time = Total File Size ÷ (Interface Real-World Throughput)

Step-by-Step Example Calculation

Here is a real-world calculation example demonstrating the mathematics:

Example: Transferring a 100 GB folder over USB 3.0 (approx 350 MB/s sustained) 100,000 MB ÷ 350 MB/s = ~285 seconds (~4 minutes 45 seconds)

Frequently Asked Questions

USB transfer overhead, 8b/10b encoding, drive controller thermal throttling, and drive write speeds typically cap real-world USB 3.0 transfers at 300-450 MB/s.

10GbE can transfer data at sustained speeds up to ~1,100 MB/s, transferring a 50 GB file in under 45 seconds if NVMe drives are used on both ends.