Mbps ↔ MB/s Converter
Smooth, instant conversion for your networking needs.
About the Mbps ↔ MB/s Converter
The Mbps ↔ MB/s Converter is a free, privacy-first, client-side web utility built to eliminate confusion between network bandwidth (measured in Megabits per second – Mbps) and real-world file transfer rates (measured in Megabytes per second – MB/s). Designed for gamers, remote workers, content creators, network engineers, and everyday internet users, it delivers instant, bidirectional, five-decimal-precision conversions — all without ever sending your data anywhere.
Internet service providers advertise connection speeds exclusively in Mbps because networks transmit data one bit at a time. However, when you download a game, stream 4K video, upload backups, or transfer large files, your computer reports progress in MB/s. The difference is fundamental: one byte equals eight bits. This means a theoretical 100 Mbps connection can deliver at most 12.5 MB/s — and in practice often less due to protocol overhead, network congestion, distance to servers, Wi-Fi limitations, and router quality.
Most users never realize this 8× factor exists, leading to widespread frustration when “500 Mbps” does not translate to 500 megabytes per second downloads. This tool exists to make that relationship crystal clear. Simply type a number in either field — Mbps or MB/s — and watch the opposite value update live on every keystroke. Results are always formatted to exactly five decimal places, giving you visibility into small but meaningful differences that coarser tools hide.
Being fully static and browser-based (powered by SvelteKit and deployed on GitHub Pages), the converter requires no account, no installation, and no internet connection after the initial page load. It works offline, respects your privacy completely, and loads quickly even on mobile devices. Whether you are comparing ISP plans, estimating how long a 50 GB game will take, troubleshooting slow transfers, or educating yourself about bits versus bytes, this utility provides the precision and immediacy you need.
The project is open-source friendly and minimalist by design — no ads, no trackers, no unnecessary features. It focuses solely on accurate, live conversion so you can spend less time calculating and more time using your connection effectively. Explore the linked blog for deeper explanations of the underlying math, real-world expectations, common misconceptions, and technical details of how the live synchronization works.
How to Use the Converter
Using the Mbps ↔ MB/s Converter is intentionally simple and instantaneous. No buttons, no forms to submit — just type and watch the magic happen in real time.
Enter Mbps
Enter a value in the Mbps field (top input box) — for example, your ISP advertised speed like 300 or 1000. As you type, the MB/s field instantly updates.
Enter MB/s
Enter a value in the MB/s field (bottom input box) — for example, an observed download speed. The Mbps field updates immediately in the opposite direction.
Live Updates
Watch live bidirectional updates — every keystroke, decimal, or backspace triggers recalculation. No need to press Enter.
Zero Out
Clear or zero out a field — if you delete everything or type 0, the opposite field shows 0.00000 right away, preventing stale values.
Experiment
Experiment freely — try different speeds to see how plan upgrades affect real downloads or estimate time for large files.
Any Device
Mobile & desktop friendly — the numeric keyboard opens on phones, inputs are large, and the layout adapts responsively.
The converter accepts decimals, leading zeros, and trailing decimal points without breaking. Invalid entries are ignored until valid again. All math uses precise JavaScript rounding to five decimal places.