How Much Data Does Internet Radio Use? (With Real Numbers)

Updated 12 September 2026

A typical internet radio stream at 128kbps uses about 58 MB per hour — roughly one megabyte per minute. Talk and news stations streaming at lower bitrates use around half that, while a 320kbps HD music stream uses about 144 MB per hour. To put that in perspective: an hour of radio costs you a small fraction of what an hour of video streaming does, and even a heavy daily listening habit fits comfortably inside most mobile plans. Below are the exact numbers, how to calculate them yourself, and the easiest ways to use less.

The simple maths

There's no mystery here — data usage is pure arithmetic, which means you can trust these numbers and recalculate them for any stream:

Bitrate (kbps) ÷ 8 = kilobytes per second, then multiply by time.

So a 128kbps stream transfers 16 KB every second. Over an hour (3,600 seconds), that's 57,600 KB — about 58 MB per hour. Bitrate is the only variable that matters; if you want the full story on what those numbers mean for sound, see our guide to radio stream audio quality and bitrate.

Data usage by bitrate

(Figures are calculated from the bitrate and rounded; real-world usage adds a small overhead for connection data, typically a few percent.)

What that means in real life

Numbers per hour are abstract; listening habits aren't. Here's how common routines add up at the standard 128kbps:

• The commute listener — one hour a day, five days a week: about 1.2 GB a month. Radio in the car covers getting it through the car's speakers.
• The half-day background listener — four hours a day on workdays: about 4.6 GB a month.
• The all-day deep worker — eight hours a day on workdays: about 9.2 GB a month. (This is the person who should be on Wi-Fi anyway.)
• The evening wind-down — two hours each evening: about 3.5 GB a month.

The takeaway: on mobile data, casual and commute listening barely registers. It's only all-day streaming over mobile data that deserves a thought — and that's exactly the listening that usually happens at home or at a desk, on Wi-Fi, where it costs nothing.

How radio compares with other streaming

Audio is one of the lightest things you can stream. Video has to send moving pictures alongside the sound, so even modest-quality video typically consumes many times more data per hour than a music stream. If you've ever watched an episode of something on your phone without worrying, an afternoon of radio is not the thing that will break your data plan.

Five easy ways to use less data

1. Prefer Wi-Fi for long sessions. The obvious one, and the one that matters most. Save mobile data for the commute. If a stream keeps stopping on a weak signal, fixing radio buffering goes through the causes.
2. Pick lower-bitrate streams when quality doesn't matter. Background noise on a phone speaker doesn't need 320kbps. Many stations offer more than one stream quality.
3. Choose talk and speech stations for low-data listening. Speech compresses beautifully — a 64kbps news stream sounds perfectly clear at half the data of a music stream.
4. Close the player when you're not listening. A stream keeps transferring data as long as it's playing, even if you've stopped paying attention.
5. Keep an eye on your phone's data report. Both iOS and Android show per-app and per-site usage, so you can check what your listening actually costs rather than guessing.

Since 72FM runs in the browser, there's no app quietly syncing in the background — data flows only while a stream is actually playing. You can browse stations by genre, country or mood and the browsing itself costs next to nothing; it's the play button that starts the meter. Listening to radio on your phone covers the rest of mobile listening, from locked screens to Bluetooth.

In short

Internet radio is light: about 58 MB per hour at the standard 128kbps, half that for talk radio, ~144 MB per hour for HD streams. A daily commute habit costs around a gigabyte a month; only all-day mobile-data streaming needs managing, and Wi-Fi solves that. The maths is simple enough to do on a napkin — and gentle enough that, for most people, data is no reason to hesitate.

That settled, the only question left is what to listen to. Start listening on 72FM — free, in your browser, no account needed.