What this calculator does
Data is one of the largest recurring costs in a Nigerian household after rent, food and transport, and it is the one people understand least. Bundles expire, usage counters are checked after the money is gone, and nobody can quite explain where fifteen gigabytes went in nine days.
This calculator builds an estimate from your habits rather than your bill. Tell it how much video you watch and at what quality, how long you spend scrolling, how much music you stream, how long your video calls run, how much general browsing you do, and how much you download in a month. It returns a monthly total, a breakdown showing which activity dominates, and a suggested bundle size with a little headroom.
The breakdown is usually the revelation. For most people, one activity accounts for over half the total, and it is almost always video, either watched deliberately or played automatically inside a social feed.
How the calculation works
Every online activity consumes data at a fairly predictable rate. Video is the heaviest by a wide margin and scales sharply with quality: roughly 0.3 GB an hour at 240p, 0.7 GB at 480p, 1.5 GB at 720p and around 3 GB at 1080p. Each quality step roughly doubles consumption.
Social media feeds sit at about 0.5 GB an hour when autoplay video is on, which is the default in most apps. Music streaming is far lighter at roughly 0.075 GB an hour. Video calls run about 1.2 GB an hour. General browsing, email and text messaging come to around 0.08 GB an hour.
The calculator multiplies each activity by its rate, scales daily figures to a month at 30.4 days, adds one off downloads, and then suggests a bundle about fifteen per cent above the estimate. That headroom matters because a bundle that runs out two days early tends to be replaced with a small top up at a much worse price per gigabyte.
The formula
Monthly data for an activity = Hours per day × Consumption rate per hour × 30.4
Typical rates: Video 240p 0.3 GB/h · 480p 0.7 GB/h · 720p 1.5 GB/h · 1080p 3 GB/h · Social feeds 0.5 GB/h · Video calls 1.2 GB/h · Music 0.075 GB/h · Browsing 0.08 GB/h
Suggested bundle = Monthly estimate × 1.15, rounded up to the nearest available size
A worked example
Somebody watches an hour and a half of video a day at 480p, scrolls social media for two hours, streams an hour of music, spends thirty minutes on video calls, browses for three hours and downloads about 4 GB of updates a month.
Video comes to 1.5 times 0.7 times 30.4, which is 31.9 GB. Social media is 2 times 0.5 times 30.4, or 30.4 GB. Music adds 2.3 GB, video calls 9.1 GB, browsing 7.3 GB, and downloads 4 GB. The total is about 85 GB a month.
Video and social media together account for 73 per cent of that. Turning off autoplay in social apps, which typically halves the feed figure, would save around 15 GB. Dropping video from 480p to 240p on a phone would save another 18 GB. Two settings changes, no change in behaviour, and roughly a third of the bill.
Things worth knowing
Turn off autoplay first
Videos that play automatically as you scroll are consumed whether or not you wanted them. Disabling autoplay, or restricting it to Wi Fi, is the single highest return setting change available on most phones and costs you nothing in experience.
Quality steps double the cost
On a phone screen the difference between 480p and 720p is marginal, and the data cost is more than double. Set a default quality in your video apps rather than letting them choose based on connection speed.
Buy bigger bundles per gigabyte
Larger bundles almost always cost less per gigabyte than small ones, and much less than emergency top ups. Work out your real monthly need, then buy a size that covers it rather than repeatedly patching a shortfall at the worst rate.
Watch background consumption
App updates, cloud photo backup and system updates can consume several gigabytes without any deliberate action. Restrict all three to Wi Fi in your phone settings, and check which apps have background data enabled.
Common mistakes to avoid
- Estimating video hours from memory rather than checking the screen time report on your phone.
- Forgetting that social media feeds play video automatically, which makes scrolling far heavier than it feels.
- Ignoring app and system updates, which can quietly consume several gigabytes a month.
- Buying a bundle with no headroom, then topping up at a much higher price per gigabyte.
- Assuming a bundle that expires monthly rolls over unused data. Most do not.
- Leaving cloud photo and video backup running on mobile data.
Frequently asked questions
How much data does an hour of video use?
Why does my data finish faster than I expect?
How much data do I need per month?
Does WhatsApp use much data?
Is it cheaper to buy a bigger bundle?
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A note on accuracy. This calculator is provided for general information and planning. It performs arithmetic on the figures you supply and does not constitute financial, legal, tax, medical or academic advice. Rates, rules, fees and institutional policies change, and your own circumstances may differ from the assumptions used here. Verify anything important with the relevant institution or a qualified professional before acting on it. See our full disclaimer for more.