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Streaming Data Usage Calculator

Monthly data usage from streaming habits, and how much of it the video quality setting is responsible for. Dropping one step from 4K to Full HD cuts video usage by more than a third, which is usually the difference between clearing a cap and not.

Also called: netflix data usage, streaming data calculator.

GB
GB
Data a month
335

335 GB a month, of which 270 GB is video. Enter a data cap to see when in the month it would be reached. Video is 81% of the total. One quality step lower would make the month 128 GB instead of 335, which is the single largest lever available and barely visible on a phone screen.

Video
270
Music
4.5
Video calls
40.5
Data a day
11.17
Monthly total one quality step lower
128
Days until the cap
0
Against the cap
Enter a data cap to see when in the month it would be reached.
On quality
Video is 81% of the total. One quality step lower would make the month 128 GB instead of 335, which is the single largest lever available and barely visible on a phone screen.
How this is calculated

Where the data goes

Total₹335
Video ₹270 (81%)Music ₹5 (1%)Calls ₹41 (12%)Other ₹20 (6%)
Method and background

How this is calculated

Video dominates almost every household total, and the quality setting is a straight multiplier on it: 4K uses roughly ten times what standard definition does for exactly the same programme. Music and calls are minor by comparison, a few hundred megabytes an hour at most, though they add up on a tight cap. The rates here are typical published figures for the major services and vary by title, since a service encodes an animated film and a live sport feed very differently.

hours at each activity times its rate, over a month, plus everything else
h
Hours a day
r
Gigabytes an hour
o
Other monthly usage

Worked examples

Each of these is asserted on every build. If a change to the engine ever moved one of these answers, the build would fail before the page could print it.

three hours of HD a day

Hours a day
3
Quality
HD, around 3 GB an hour
Music streaming a day
1
Video calls a day
1
Everything else a month
20 GB
Data cap
0 GB

Data a month335

3 x 3 x 30 for video, plus music, calls and other

Open this example

4K against a 500 GB cap

Hours a day
3
Quality
4K, around 7 GB an hour
Music streaming a day
1
Video calls a day
1
Everything else a month
20 GB
Data cap
500 GB

Data a month695

boundary: one quality step is the difference between clearing the cap and not

Open this example

Method and limits

What it assumes

  • Typical published rates for the major services, which vary by title and platform.

What it deliberately does not model

  • Adaptive streaming lowers quality on a congested connection, so real usage is often below these figures.
  • Downloads for offline viewing count once, and re-watching them costs nothing further.

Formula version 1.0.0 · definition 1.0.0 · India · Report a problem with this calculator

Frequently asked questions

What is the fastest way to cut usage?
Lower the video quality setting one step. It changes the largest number by the largest factor, and on a phone screen the difference is barely visible.