Speed converters
Move cleanly between Mbps, MB/s, and data per hour.
Free · Private · Instant
Internet math,made instantly clear.
Fast, accurate calculators for download time, bandwidth, data usage, and everyday network decisions.
01 No sign-up02 No uploads03 Runs in your browser
Built for clarity
Practical tools. Precise answers.
Data planners
Understand streaming and monthly data before you commit.
Network calculators
Plan bandwidth, transfer time, and IPv4 subnets accurately.
The toolkit
Everything you need to make sense of your connection.
DTReady
Time
Download Time
Estimate how long a file will take to download at any internet speed.Open tool ↗UTReady
Time
Upload Time
Plan cloud backups, video uploads, and large file transfers.Open tool ↗SMReady
Speed
Mbps to MB/s
Convert advertised connection speed into real file speed.Open tool ↗MSReady
Speed
MB/s to Mbps
Translate file transfer speed into internet-plan megabits.Open tool ↗GHReady
Speed
Mbps to GB/hour
See how much data a constant connection can move each hour.Open tool ↗DUReady
Data
Data Usage
Estimate monthly usage across streaming, calls, browsing, and gaming.Open tool ↗SDReady
Data
Streaming Data
Compare estimated consumption for 480p, 720p, 1080p, and 4K.Open tool ↗BSReady
Network
Bandwidth Sharing
Estimate a fair per-device share after reserving network headroom.Open tool ↗FTReady
Time
File Transfer Time
Plan transfers over LAN, USB, storage, or other links.Open tool ↗IPReady
Network
IPv4 Subnet
Calculate network, host range, broadcast address, and subnet mask.Open tool ↗Accuracy without friction
Useful answers, with the math left visible.
Every calculator shows its assumptions, units, and method—so you can understand the result instead of trusting a mystery number.
See how our calculations workPrivate by design
Launch calculators run locally in your browser. Your values are not uploaded.
Clear assumptions
Ideal estimates and real-world overhead are labeled separately.
Built for real decisions
Examples mirror downloads, backups, streaming, and network planning.
Field notes
Understand the numbers behind your network.
Guide 01Guide 03Guide 04
Internet fundamentals
Mbps vs MB/s: the small “b” that changes everything
6 min read · Read guide ↗Real-world speed
Why downloads rarely match the number on your internet plan
8 min read · Read guide ↗Data planning