Free online toolkit
Internet and network calculators
for clear, practical answers.
Calculate transfer time, convert internet speed, estimate data usage, share bandwidth, and plan IPv4 subnets. Every tool is free, private, and runs directly in your browser.
Time tools
Transfer time calculators
Estimate download, upload, and file transfer duration from data size and sustained speed.
Time
Download Time
Estimate download duration for games, videos, backups, software, and other large files using a known file size and connection speed.Open calculator ↗Time
Upload Time
Plan how long a cloud backup, video upload, photo library, or work file transfer should take at your sustained upload speed.Open calculator ↗Time
File Transfer Time
Plan local and remote transfers across Ethernet, Wi-Fi, USB, NAS, or storage by comparing file size with a realistic sustained transfer rate.Open calculator ↗Speed tools
Internet speed converters
Convert between Mbps, MB/s, and hourly data rates without confusing bits and bytes.
Speed
Mbps to MB/s
Translate an advertised internet speed in megabits per second into the megabytes per second commonly shown by browsers and download apps.Open calculator ↗Speed
MB/s to Mbps
Convert the megabytes per second shown by a download or storage app into the equivalent megabits per second used for network speeds.Open calculator ↗Speed
Mbps to GB/hour
See how many decimal gigabytes a constant network rate can move in one hour, then use the result for transfer and data-cap planning.Open calculator ↗Data tools
Data usage calculators
Estimate monthly internet and streaming consumption before choosing a plan or reaching a data cap.
Data
Data Usage
Build a practical monthly estimate from everyday online activities before choosing an internet plan or checking whether a data allowance is enough.Open calculator ↗Data
Streaming Data
Estimate how much data video streaming may consume at common resolutions and viewing schedules, then compare the result with a monthly allowance.Open calculator ↗Network tools
Network planning tools
Share bandwidth fairly and calculate IPv4 subnet details for practical network decisions.
Network
Bandwidth Sharing
Estimate an equal per-device bandwidth share while keeping spare capacity for overhead, bursts, and other traffic on a shared connection.Open calculator ↗Network
IPv4 Subnet
Inspect an IPv4 address and CIDR prefix to find the network boundary, subnet mask, usable host range, broadcast address, and address count.Open calculator ↗Learn the method
Want the numbers explained?
Our practical guides cover units, assumptions, real-world speed limits, data use, and subnet planning.