File Transfer Calculator

Calculate how long it takes to upload or download files based on connection speed and file size.

Connection Speed

Files

Advanced Options

Protocol Overhead

Simulate TCP Slow Start

Multi-Stream Transfer

Use Binary Units (1 KiB = 1024 B)

Assumptions

Quick Scenarios

Total Files

Total Size

100.00 GiB

Total Transfer Time

02:39:04

Effective Throughput

90.00 Mbps

File #	Size	Transfer Time
File 1	100.00 GiB	02:39:04

Transfer Time per File

File 1

100.00 GiB

02:39:04

100.0%

Longest Transfer

2.7h

TCP/IP adds ~5-10% overhead due to headers and acknowledgments

TCP slow start can double transfer time for files under 1MB

4 parallel streams can improve throughput by ~2-3x on high-latency links