無料 · ネットワーク・IT インフラ
ネットワーク帯域計算機.
利用者とアプリケーションから、オフィスや拠点に必要な下り・上り帯域を余裕込みで計算し、回線の目安を示します。
CALCULATED IN YOUR BROWSER · NOTHING IS UPLOADED
Required bandwidth253.74 Mbps ↓ · 178.86 Mbps ↑
- Recommended download
- 300 Mbps
- Recommended upload
- 200 Mbps
- Symmetric link (fibre, dedicated)
- 300 Mbps
- Headroom factor applied
- × 1.95
Demand at peak
| Application | Active users | Down | Up |
|---|---|---|---|
| Web browsing and SaaS apps | 36 | 54 Mbps | 10.8 Mbps |
| E-mail and chat | 48 | 9.6 Mbps | 4.8 Mbps |
| Video meeting 1080p | 12 | 36 Mbps | 45.6 Mbps |
| VoIP call G.711 (Ethernet, 20 ms) | 6 | 523.2 kbps | 523.2 kbps |
| Cloud backup and file sync | 6 | 30 Mbps | 30 Mbps |
| Total before headroom | 130.12 Mbps | 91.72 Mbps |
- Per-user rates are typical published recommendations (video meeting, streaming and VoIP vendors); replace them with your vendor’s figures.
- Consumer links are often asymmetric: video meetings and cloud backup usually make upload the limit.
- For voice and video, quality also depends on latency, jitter and QoS, not only on bandwidth.
使い方: ネットワーク帯域計算機
データを入力するかファイルを選び、設定を調整して結果を生成します。コピーやダウンロードの前に結果を確認してください。
制限と対応形式
入力内容はお使いの端末で処理されます。
英語の技術説明
Per-user rates are typical published recommendations; replace them with your vendor’s figures. Latency, jitter and QoS are not modelled. Everything is calculated in your browser; nothing is sent or probed on the network.
Active users × per-user rate, summed per direction, then multiplied by protocol overhead and growth and divided by the maximum utilisation of the link.
60 users browsing, meeting in 1080p, calling and syncing files need about 254 Mbps down and 179 Mbps up with headroom: a 300 Mbps symmetric link.