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Calculate Bandwidth & Data Transfer Speed

Built by Kevin Glover · @gloverbuilds · Verified formula

Convert between bandwidth units. Calculate download time, streaming needs, and household bandwidth requirements.

📅 Updated April 2026 ✅ Formula verified 📖 4 min read 🆓 Free · No sign-up

In this article

Mbps vs MB/s — The Crucial Difference
Bandwidth Requirements

Par Usage

Email/navigation : 1-5 Mbps. Streaming HD : 5-10 Mbps par flux. Streaming 4K : 25 Mbps. Visioconférence : 3-5 Mbps. Gaming en ligne : 5-10 Mbps (la latence compte plus). Télétravail : 10-25 Mbps. Famille de 4 avec tous en ligne : 50-100 Mbps minimum. Le Wi-Fi est souvent le goulot d'étranglement, pas la connexion internet.

Fibre vs ADSL

ADSL : 5-20 Mbps max. Fibre FTTH : 300-8 000 Mbps. Le passage à la fibre est le plus grand saut de confort numérique. Si disponible : la fibre à 30-40 €/mois est le meilleur investissement tech du foyer.

⚡ CalcWolf Insight

The "you only need 25 Mbps" claim from the FCC (2015 broadband definition) is woefully outdated. A single 4K Netflix stream uses 25 Mbps. With remote work, video calls, smart home devices, and multiple family members, 100 Mbps should be the minimum standard in 2026. Many ISPs offer 300-500 Mbps for $50-70/month — worth it for the headroom.

Frequently asked questions

Combien de Mbps ?▾

1-2 personnes : 30-50 Mbps. Famille de 4 : 100+ Mbps. Streaming 4K + visio + gaming simultanés : 200+ Mbps.

Mon Wi-Fi est lent mais ma fibre est rapide ?▾

Le Wi-Fi est souvent le problème. Solution : routeur Wi-Fi 6, réseau mesh pour les grandes maisons, ou câble Ethernet pour le bureau.

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Kevin Glover · @gloverbuilds

Founder, CalcWolf · GLVTS · Blickr

All formulas sourced from primary references — IRS publications, peer-reviewed research, and official standards. Results are tested against independent reference calculators before publishing. Rates and brackets updated when official sources change. Editorial policy →