Mobile Data Usage Calculator
Estimate your monthly mobile data from daily video streaming, music, video calls and browsing, using Netflix, Spotify and Zoom's own published data rates.
Rates: Netflix data-usage settings, Spotify streaming quality and Zoom bandwidth guidance (checked November 2026). Other video apps and video calls on other services are in the same range. 1 GB = 1,000 MB here; some carriers count 1,024 MB.
Wi-Fi time does not count — enter only the hours you spend on mobile data.
| Activity | Hours/day | GB per hour | GB/day | GB/month | Share |
|---|---|---|---|---|---|
| Video streaming | 1 | 0.7 | 0.7 | 21 | 42.8% |
| Music streaming | 1 | 0.072 | 0.072 | 2.16 | 4.4% |
| Video calls | 0.5 | 1.08 | 0.54 | 16.2 | 33% |
| Feeds and browsing | 2 | 0.15 | 0.3 | 9 | 18.3% |
| Games, maps, other | 0.5 | 0.05 | 0.025 | 0.75 | 1.5% |
Choosing a phone plan means knowing how much data you really use, and most of it goes on video. This calculator adds up your daily streaming, music, video calls and browsing using the data rates the services themselves publish — Netflix's per-hour figures for each quality setting, Spotify's bitrates and Zoom's bandwidth guidance — and shows your monthly total, the share of each activity and a plan size that fits.
How to use this tool
- Enter how many hours a day you do each activity on mobile data (not on Wi-Fi).
- Pick the video, music and call quality you use.
- Adjust the browsing and other-app rates if your phone's usage screen shows different figures.
- Read the monthly total and see which activity uses the most.
Formula
GB per month = Σ (hours per day × GB per hour) × days · music GB/h = kbit/s × 3600 ÷ 8 ÷ 10⁶ · call GB/h = (up + down Mbit/s) × 3600 ÷ 8 ÷ 1000
Video rates are Netflix's published maximums (0.3, 0.7, 1, 3 and 7 GB per hour). Spotify's Normal, High and Very high settings are about 96, 160 and 320 kbit/s (43, 72 and 144 MB per hour). Zoom lists 1.2 Mbit/s each way for 720p one-to-one calls. Feeds, browsing and other apps vary too much for a single figure, so their rate is your estimate.
Example
Watching 1 hour of HD video a day at up to 3 GB per hour uses 3 × 30 = 90 GB a month on its own. One hour of Spotify at High quality is 160,000 × 3,600 ÷ 8 = 72 MB a day, or 2.16 GB a month. A daily one-hour 720p video call adds about 1.08 GB a day. Lowering video to Medium (0.7 GB/h) cuts the 90 GB to 21 GB.
Frequently asked questions
What uses the most data?
Video, by far. One hour of HD streaming uses more than a month of music at normal quality. Setting streaming apps to a data-saver mode on mobile is the biggest single saving.
Do downloads count?
Yes, if they happen on mobile data. Downloading shows and playlists on Wi-Fi beforehand moves that usage off your plan.
Why does my bill show a different number?
Background updates, cloud photo backup, app downloads and tethering also use data. Compare with the usage screen in your phone's settings for a month.
Sources
Last updated:
Page address with these inputs: https://kakao.mobile/tools/mobile-data-calculator/
Cite or embed this tool
kakaoCalc. (2026, November 8). Mobile Data Usage Calculator. https://kakao.mobile/tools/mobile-data-calculator/
“Mobile Data Usage Calculator.” kakaoCalc, 8 Nov. 2026, kakao.mobile/tools/mobile-data-calculator/.
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