Infrastructure
How much data flows through the internet right now? (Live Counter)
~395 terabytes of data every second — video, AI, and mobile driving growth with no end in sight
Roughly 395 terabyte every second.
TB (terabytes) transferred across the global internet today
Source: AppLogic Networks (formerly Sandvine) Global Internet Phenomena Report 2025; Cisco VNI 2022; DE-CIX Internet Exchange statistics 2025. View on dashboard →
What is internet traffic - and why does it keep doubling?
About 34 exabytes of data flow across the internet every day (AppLogic/Sandvine GIPR 2025) — roughly 8 billion DVDs worth. Cisco tracked traffic growing from 1.5 ZB in 2017 to 4.8 ZB in 2022. Video alone is over 60% of traffic: YouTube and Netflix each account for ~1.5-1.6 GB per user per day on AppLogic-measured networks.
What ~395,000 GB per second means for your everyday internet experience
Numbers like "395,000 gigabytes per second" are too large to be intuitive. But you feel internet traffic constantly, even if you rarely think about it. When a video buffers during peak hours (typically 8-10 PM), that is congestion - more traffic arriving than the network can cleanly route. When a website responds in 40ms instead of 200ms, that is your request traveling through a backbone designed to handle this enormous throughput efficiently.
For the average person, the most direct impact is cost and speed. Carriers and ISPs invest billions each year in capacity upgrades specifically to stay ahead of traffic growth. Those investments flow back into pricing: in markets with strong competition, prices per gigabyte drop as capacity grows. In markets with limited competition, they do not. The traffic counter above is, in a roundabout way, a measure of infrastructure investment pressure.
There is also a carbon angle: data centers and network infrastructure now consume roughly 1-2% of global electricity. Video streaming alone accounts for more than 60% of total internet traffic. Every time you stream 4K video instead of 1080p, you are quadrupling the data throughput for that session. Small personal choices, multiplied by billions of users, are a meaningful fraction of the number you see above.
Internet traffic by the numbers: the scale in concrete terms
AppLogic/Sandvine GIPR 2025: average 5.6 GB downloaded per user per day; scaled globally ≈ 34 EB/day across ~6.1 billion internet users
AppLogic GIPR 2025: YouTube averages 1.5 GB/user/day (+21% YoY), Netflix 1.6 GB/user/day (+15% YoY), Amazon Prime 644 MB (+51% YoY)
Cisco VNI: global IP traffic grew from 1.5 ZB/year (2017) to 4.8 ZB/year (2022), a 3× increase — modelled estimates now exceed 12 ZB/year
Video streaming accounts for approximately 60-70% of all downstream internet traffic; live-streamed sports produced all top-10 US traffic days in 2024
DE-CIX Frankfurt, the world's largest IXP, regularly exceeds 20 terabits per second peak throughput
Internet traffic vs. data center energy, today
Every byte transferred requires energy to store, process, and transmit. As global traffic surges, driven by video and AI, data centers must consume proportionally more electricity.
From kilobytes to zettabytes: the internet traffic timeline
- 2000Global internet traffic ~1 EB/month; dot-com boom drives rapid growth
- 2010Cisco VNI: ~20 EB/month; YouTube and Netflix begin dominating bandwidth
- 2017Cisco VNI: 1.5 ZB/year; streaming video surpasses peer-to-peer as #1 traffic source
- 2020COVID: traffic surges 30-40% in Q1-Q2; Zoom, Netflix, Teams drive peak demand
- 2022Cisco VNI: 4.8 ZB/year; mobile exceeds 71% of total IP traffic
- 2024Sandvine: 33 EB/day; AI API traffic emerges as new fast-growing category
- 2025AppLogic Networks (formerly Sandvine) GIPR 2025: 5.6 GB/user/day; live-streamed sports drive all top-10 US traffic days; AI assistants scale up
Global internet traffic growth, 2017-2025
Global internet traffic has grown by roughly 30-35% per year since 2010, surging from around 100 exabytes per year in 2012 to an estimated 12+ zettabytes in 2025. Video streaming still dominates — users on AppLogic-measured networks download an average of 5.6 GB/day (2025), with YouTube, Netflix, Amazon Prime and Disney+ alone accounting for several gigabytes per user per day.
| Year | Rate (TB/s) | Annual | Context |
|---|---|---|---|
| 2017 | 47.6 TB/s | 1.5 ZB/year; 122 EB/month | Streaming surge; mobile growth accelerating |
| 2020 | 101.5 TB/s | ~3.2 ZB/year; COVID surge | Pandemic drives 30-40% spike in traffic |
| 2022 | 152.2 TB/s | 4.8 ZB/year; 396 EB/month | Post-COVID normalisation; mobile dominant |
| 2025 | 395.0 TB/s | ~12.4 ZB/year; ~34 EB/day (AppLogic GIPR 2025) | Video still dominant; live sports drive peaks; AI assistants scale up |
| 2028 (forecast) | 571.0 TB/s | ~18+ ZB/year; AI inference traffic adds new layer | AI model inference, 8K video, AR/VR drive continued growth |
How the internet grew to carry over 12 zettabytes of traffic per year
The data deluge
Global internet traffic has grown faster than almost any infrastructure metric in history. Between 2000 and 2024, internet traffic grew from approximately 1 exabyte per month to over 33 exabytes per day, a 1,000x increase in 24 years. This growth has been enabled by three structural shifts: the continual improvement in fibre optic capacity (following Shannon's limit), the rise of content delivery networks (CDNs) that move data closer to users, and the compression of video through successive codec generations (H.264, H.265/HEVC, AV1).
What "traffic" actually measures
Internet traffic statistics are measured in different ways by different organisations: the Cisco VNI measures "IP traffic" (all packets routed globally); IXP traffic data measures inter-network peering at specific physical interconnection points; AppLogic Networks (Sandvine) measures application-layer traffic by monitoring actual content in carrier networks. These methodologies yield different numbers for the same underlying phenomenon. The live counter uses AppLogic's carrier-network estimate scaled to 6.1B global users (~395 TB/sec, ~34 EB/day), which reflects total global internet traffic. Directly measured IXP peering traffic (~79 EB/year at major exchanges ≈ 2.5 TB/sec) is a verifiable but much smaller subset.
Research & measurement: how traffic is counted
| Year | Finding | Value | Source |
|---|---|---|---|
| 2017 | Cisco VNI: 1.5 ZB/year global IP traffic; 122 EB/month; mobile 18% of total IP traffic | 1.5 ZB/year (2017) | Cisco |
| 2019 | Cisco VNI: ~2.5 ZB/year; projected tripling to 4.8 ZB by 2022; video ~79% of total | 2.5 ZB/year (2019 estimate) | Cisco |
| 2020 | COVID: internet traffic surges 30-40% in 2020 as remote work, streaming, and gaming spike | 3.2 ZB/year (2020 COVID surge) | Cisco |
| 2022 | Cisco VNI: 4.8 ZB/year; 396 EB/month; mobile 71% of IP traffic; video ~82% | 4.8 ZB/year (2022) | Cisco |
| 2024 | Sandvine 2024: ~33 EB/day (~12 ZB/year); 7.8B connections; average 4.2 GB/user/day | 12 ZB/year (2024 est.) | Sandvine |
| 2025 | AppLogic Networks GIPR 2025 (Mar 2025): average 5.6 GB/user/day; YouTube 1.5 GB (+21% YoY), Netflix 1.6 GB (+15%); 95%+ of traffic classified; live sports drive all top-10 US traffic days | 12 ZB/year (2025 est.) | AppLogic Networks |
In perspective
~34 exabytes per day = the equivalent of transferring every book ever written by humanity approximately 34 million times every single day
At 34 EB/day, the internet moves enough data each second to fill ~170,000 DVDs, every second, continuously
How the number is calculated
The live counter uses ~2.5 TB/sec, the measured throughput at major global Internet Exchanges (IXPs) in 2025 (~79 Exabytes combined ÷ 31,536,000 seconds). This is a subset of total internet traffic: AppLogic Networks' 2025 Global Internet Phenomena Report (formerly Sandvine) estimates ~5.6 GB/user/day across tens of millions of sampled fixed and mobile subscribers; scaled to the ~6.1 billion global internet users (DataReportal Digital 2026) this implies roughly 34 EB/day, or ~395 TB/sec globally — about 150× higher than directly measured IXP peering traffic. Cisco's last published Annual Internet Report (2022) projected 5,016 EB/year ≈ 158.5 TB/sec. The IXP metric is used for the counter because it is directly and publicly measured; the full-network total relies on modelling.
Sources: Cisco - Annual Internet Report / Visual Networking Index - AppLogic Networks (formerly Sandvine) - 2025 Global Internet Phenomena Report (Feb/Mar 2025). Methodology →
Frequently asked questions
- How much data is transferred on the internet every day?
- AppLogic Networks' 2025 Global Internet Phenomena Report (formerly Sandvine, March 2025) reports an average of 5.6 GB downloaded per user per day. Scaled to the ~6.1 billion global internet users (DataReportal Digital 2026), that implies roughly 34 exabytes per day globally — about 395 terabytes per second, or the contents of 10 million full DVDs every second.
- What type of content makes up most internet traffic?
- Video is by far the dominant category: streaming (Netflix, YouTube, Amazon Prime, Disney+, TikTok) accounts for approximately 60-70% of downstream internet traffic. YouTube alone averages ~1.5 GB/user/day (+21% YoY); Netflix ~1.6 GB/user/day (+15% YoY), according to AppLogic GIPR 2025. Social media, file sharing, web browsing, gaming, and cloud services make up the rest.
- How fast is internet traffic growing?
- Cisco VNI projected 26% compound annual growth from 2017-2022. Growth has moderated to roughly 15-25% per year since then as efficiency improvements (better video codecs, CDNs) offset rising usage. Live-streamed sports now drive the biggest single-day peaks — in 2024 all ten of AppLogic's top traffic days in the US coincided with live sports events. AI-related data transfer (model downloads, API calls) is emerging as a new fast-growing category, though still modest by volume.
Why trust this data
The primary current source is the AppLogic Networks Global Internet Phenomena Report 2025 (March 2025), the successor to Sandvine's long-running GIPR. It uses AppLogic's library of 2,500+ application signatures to classify over 95% of traffic in representative fixed and mobile networks worldwide. Historical context comes from Cisco's Visual Networking Index (VNI) and Annual Internet Report — the gold standard used by ISPs, governments, and equipment manufacturers until it was discontinued in 2022. OECD Broadband Statistics and publicly-reported Netflix, Google, and Cloudflare traffic data validate industry estimates.
Sources
Cisco - Annual Internet Report / Visual Networking Index - AppLogic Networks (formerly Sandvine) - 2025 Global Internet Phenomena Report (Feb/Mar 2025).
Explore related: New internet users - New websites created - Data center energy, and the live AnythingCounter dashboard.