Bandwidth Calculator
Bandwidth needed for users and streams.
Enter your values
Enter the concurrent users you are working with.
Enter the mbps per user you are working with.
Enter the headroom in %.
Enter the upload share in %.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Download bandwidth needed
- 187.2 Mbps
- Upload bandwidth needed
- 37.4 Mbps
- Per-user allocation
- 6 Mbps
- Recommended plan
- 200 Mbps
Quick answer
Required bandwidth is concurrent users multiplied by their per-user throughput plus headroom.
Mbps = users × per-user Mbps × (1 + headroom)
At a glance
| What it does | Bandwidth needed for users and streams. |
|---|---|
| Category | Technology |
| Inputs needed | Concurrent users, Mbps per user, Headroom, Upload share |
| Main output | Download bandwidth needed |
| Formula | Mbps = users × per-user Mbps × (1 + headroom) |
| Cost | Free — no sign-up, no download |
How to use the Bandwidth Calculator
- 1Enter how many users are online at once.
- 2Enter typical Mbps each one needs.
- 3Add headroom for bursts.
Inputs explained
- Concurrent users
- Enter the concurrent users you are working with.
- Mbps per user
- Enter the mbps per user you are working with.
- Headroom(%)
- Enter the headroom in %.
- Upload share(%)
- Enter the upload share in %.
Worked example
Using the values the calculator loads with:
Inputs
- Concurrent users24
- Mbps per user6
- Headroom30 %
- Upload share20 %
Results
- Download bandwidth needed187.2 Mbps
- Upload bandwidth needed37.4 Mbps
- Per-user allocation6 Mbps
- Recommended plan200 Mbps
Frequently asked questions
How much for 4K streaming?
About 25 Mbps per stream.
Why add headroom?
Peaks and background updates routinely double average usage.
What do I need to enter into the Bandwidth Calculator?
Just 4 values: concurrent users, mbps per user, headroom, upload share. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Bandwidth Calculator work out the answer?
Required bandwidth is concurrent users multiplied by their per-user throughput plus headroom. It applies the formula Mbps = users × per-user Mbps × (1 + headroom) and shows the working so you can check each step by hand.
Is the Bandwidth Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.