Computers & Laptops

Internet Data Usage Calculator

What your activities add up to in a month, from consumption figures you read off your own apps.

33 inputs Free, no sign-up

Your figures

Most streaming apps show data use per hour in their settings, and it changes a lot with the quality setting. This page holds no figures of its own.

Use fewer for a machine you only run on working days.

Optional. Add it to see whether the total fits.

Try an example

Result

Your result

Enter your figures and the result appears here.

Estimates only. Rates, fees and specifications change. Confirm against the official source before you rely on a figure — see our disclaimer.

About this calculator

This page has no idea what any streaming service uses, and says so. Consumption depends on the service, the resolution, the codec and the year, so a figure printed for "HD video" would be wrong for most readers of it.

What it does is add up figures you measured. Streaming apps report their own usage per hour, and a router's traffic counter gives the household total.

How to use this calculator

  1. For each activity, find what it actually uses per hour. Streaming apps show it in their settings; phones report per-app data use; a router counts everything.
  2. Enter the hours a day and how many devices do it at once.
  3. Set the days a month, and your plan's allowance if you want to see whether it fits.

The formula

A day   = sum of (data per hour x hours a day x devices)
A month = A day x Days a month

Internet providers count in decimal gigabytes, which is the convention used here.

SymbolMeaningUnit
Data an hour What you measured GB or MB
Hours a day How long it runs h
Devices How many at once

Worked example

Two hours of video at 3 GB an hour and an hour of calls at 900 MB an hour, over 30 days:

Video = 3 x 2     = 6 GB a day
Calls = 0.9 x 1    = 0.9 GB a day
A day              = 6.9 GB
A month = 6.9 x 30 = 207 GB

Which fits a 250 GB allowance with 43 GB to spare — before anything not on the list.

Notes and limits

  • Background traffic is rarely negligible: system updates, cloud sync, backups and devices you did not list. If your measured usage is well above this total, that is usually where it is.
  • Quality settings move video usage several-fold. Dropping a service from its highest setting to one below often halves it.
  • A router's traffic counter over a full month is the most reliable figure available, and it is the one to check this against.
  • Providers count in decimal GB. Your operating system counts in binary, so the two rarely agree exactly.

What this calculation assumes

  • Every consumption figure is one you entered. No service data is stored in this page.
  • Background traffic is not included unless you add a row for it.
  • Data is counted in decimal gigabytes, as providers count it.

Frequently asked questions

How much data does streaming use?

It depends entirely on the service and the quality setting - which is why this page asks rather than telling you. Most streaming apps report their own usage per hour in their settings, and that is the figure to enter.

How do I find my real data usage?

A router's traffic counter over a full month is the most complete source. Your provider's app usually reports it too, and phones break it down by app.

Why is my actual usage higher than this total?

Almost always background traffic - updates, cloud sync, backups and devices not on your list. Adding a row for "everything else" with the difference in it makes the gap visible.

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