Planning tool
Internet bandwidth sizer
Most slow-internet complaints are an upload problem. This sizes both directions, with video calls, backups and cameras counted separately.
Result
Download needed
126Mbps
Plan size: 200 Mbps
Upload needed
86Mbps
Plan size: 100 Mbps
Link to ask for
200Mbps
Choose a dedicated link at this speed in both directions where you can
Cloud backup alone
18.5Mbps
Camera and remote-view upload
8Mbps
- Check:Upload demand is high against download. Ask for a symmetrical (same speed both ways) leased line or fibre plan; home-style plans give far less upload.
Method
How the numbers are worked out
Download and upload counted apart
Everyday browsing and cloud apps are mostly download (upload is taken as one fifth). Video calls, VoIP, remote camera viewing and backups are symmetrical or upload-heavy, so they are added to upload in full.
Backup as a rate
A nightly backup of a given size is spread over its window: GB × 8000 ÷ seconds gives Mbps.
Round up to a real plan
The headroom is added, then the figure is rounded up to a common plan size.
Assumptions and limits
- Providers quote 'up to' speeds on shared connections. A dedicated (leased line or enterprise fibre) link gives the speed you pay for.
- VoIP is taken as 0.1 Mbps per call each way (G.711 with overhead).
- Software updates and large file shares can briefly exceed this; the headroom absorbs normal peaks, not constant heavy use.
Related
Nothing you type here leaves your device unless you choose to send it to us. These are planning estimates; a survey or the equipment data sheet confirms the final figures.
Want an engineer to check it?
Send us what you worked out and we will come back with a design based on the real site.