Data usage calculator
Estimate your monthly data usage from hours of activity per day.
Related tools
All Data & computing tools →Enter Hours per day, Data rate (GB/hour), Days and the Data usage calculator works out Total data (GB) straight away. For instance, with Hours per day = 3, Data rate (GB/hour) = 1 and Days = 30 it returns Total data (GB) = 90.
How to use it
- Enter your values: Hours per day, Data rate (GB/hour), Days.
- Read the result instantly: Total data (GB).
Frequently asked questions
What does the Data usage calculator actually compute?
It takes Hours per day, Data rate (GB/hour) and Days and derives Total data (GB) from them. The calculation is live as you type, so the result updates on every change.
What information do I need to provide?
3 values: Hours per day, Data rate (GB/hour) and Days. Nothing else is required — no account, no file upload.
Can you show a worked example?
With Hours per day = 3, Data rate (GB/hour) = 1 and Days = 30, the calculator returns Total data (GB) = 90. Those figures come from running this exact tool, so you can reproduce them by entering the same values.
What happens if I enter larger values?
It moves a lot. Using Hours per day = 6, Data rate (GB/hour) = 1.1 and Days = 60 instead, Total data (GB) goes from 90 to 396 — which is why it is worth testing a few scenarios rather than trusting a single figure.
What does it give for smaller values?
Scaled down to Hours per day = 1.5, Data rate (GB/hour) = 0.9 and Days = 15, Total data (GB) comes out at 20.25. The relationship is worth checking at both ends before you rely on a single result.
When would I actually use this?
Finding out how big a thing will be before you make it: how many gigabytes an hour of footage takes, how long a file needs on the connection you have, how large a photo prints before it goes soft, what bitrate fits the budget you were given.
What is the most common mistake?
Reading a figure in one unit next to a figure in another. Megabits are not megabytes and the eight-fold gap sinks most transfer estimates; a kilobyte is 1 000 bytes to a drive maker and 1 024 to the operating system; pixels are not dots per inch. None of it is hard arithmetic — the unit on each side is what decides whether the answer means anything.
Is there a tool for the next step?
Video frame count calculator is the closest one after this: Compute how many frames a video contains from its duration and frame rate.
Where do the figures come from, and how current are they?
Byte prefixes follow the IEC convention where a kibibyte is 1 024 bytes and a kilobyte is 1 000 — drive makers use the second, operating systems often report the first, and a disk that shrinks on arrival is that gap and nothing else. Print sizing assumes 300 dpi unless you change it.