Why multiply file size by 8?

File sizes are typically measured in bytes while connection speeds are measured in bits, and there are 8 bits per byte.

File Transfer Time Calculator

Estimate file transfer time based on file size and connection bandwidth, accounting for the bits/bytes distinction.

Inputs

Results

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Formula

Time (s) = (File Size(MB) × 8) / Speed(Mbps)

File Transfer Time and Network Throughput Explained

Why file transfer times need a bits-to-bytes conversion, and how real network throughput differs from the advertised link speed.

Setting Up a Home Network: Subnetting, Wi-Fi Throughput, and Real Transfer Times

How subnet planning, real-world Wi-Fi throughput after overhead, and file transfer time calculations connect for a home network setup.

Subnet Calculator

Calculate network address, broadcast address, and host range from an IP and CIDR.

IP to Binary Converter

Convert an IPv4 address to its binary representation.

Wildcard Mask Calculator

Convert a CIDR prefix length to its wildcard mask, used in ACLs.

Hosts per Subnet Calculator

Calculate the number of usable hosts for a given CIDR prefix length.

Network Throughput Calculator

Calculate effective throughput accounting for protocol overhead.

Packet Loss Percentage Calculator

Calculate the percentage of network packets lost in transit.