SwiftNetScanWhat Is Ping? A Complete Guide to Ping in Networking
You've probably seen the word "ping" listed in speed test results alongside download and upload speeds. But what does it actually mean, why does it matter, and how can you improve it? This guide explains everything clearly.
The Simple Definition of Ping
In networking, ping is the time it takes for a small packet of data to travel from your device to a server and back again. It is measured in milliseconds (ms). Think of it as a digital echo: you shout, the server hears you, and ping measures how long it took for your shout to return.
The word "ping" originally referred to a command-line tool — ping — that sends ICMP (Internet Control Message Protocol) echo-request packets to a target host and listens for a reply. Every operating system (Windows, macOS, Linux) includes this tool, and you can use it right now by opening a terminal and typing ping google.com.
In everyday internet usage, "ping" and "latency" are often used interchangeably, though technically they are slightly different concepts — we'll cover that distinction below.
How Ping Is Measured
Ping is measured as Round-Trip Time (RTT): the total elapsed time from when your device sends the request to when it receives the response.
When you run an internet speed test on SwiftNetScan, the ping result represents this round-trip time to the nearest test server. A lower number is always better.
What Do the Numbers Mean?
- Under 20 ms — Excellent. Virtually imperceptible delay. Ideal for competitive gaming and HD video calls.
- 20–50 ms — Good. Suitable for most online activities including gaming and streaming.
- 50–100 ms — Acceptable. Casual gaming is fine; competitive play starts to show minor lag.
- 100–150 ms — Noticeable. Delays are perceptible in real-time apps and online games.
- Above 150 ms — Poor. Significant lag in games, choppy video calls, and degraded VoIP quality.
Ping vs. Latency: What's the Difference?
People often use "ping" and "latency" as synonyms, but they aren't identical. Latency is the broader term for any delay in a network system — it encompasses the time a packet takes to travel one way from source to destination. Ping measures the specific round-trip time (there and back), making it double the one-way latency in ideal conditions.
In practice, when gamers or network engineers say "my latency is high," they almost always mean their measured ping is high. For speed tests and consumer internet performance, the two terms are functionally equivalent.
To dive deeper, read our full guide: What Is Latency and How Does It Affect Your Internet?
Why Ping Matters for Different Activities
Online Gaming
Ping is the single most important metric for competitive online gaming. Games like Call of Duty, Valorant, Fortnite, and League of Legends require near-instantaneous communication between your client and the game server. Even a difference of 30 ms can mean the gap between winning a duel and losing it. High ping causes:
For competitive gaming, aim for under 30 ms. Check our guide on best internet speeds for gaming to understand the full picture.
- Character movement that feels "sticky" or delayed
- Bullets or abilities registering late (or not at all)
- Rubber-banding — your character snapping back to a previous position
- Game disconnections during critical moments
Video Calls and VoIP
Zoom, Teams, Google Meet, and phone calls over the internet are highly sensitive to ping. When ping is too high, conversations develop awkward pauses, people talk over each other, and audio becomes choppy. The ITU-T G.114 standard recommends keeping one-way latency below 150 ms for acceptable voice quality — which means your round-trip ping should stay below 300 ms, though ideally well under 100 ms.
Live Streaming and Video Chat
When streaming live on Twitch or YouTube, you push data continuously to a streaming server. High ping increases the chance of dropped frames and stream disconnections. Viewers watching recorded or buffered video (Netflix, Disney+) are almost entirely unaffected by ping — their experience depends on download bandwidth instead.
Web Browsing
Every website you load involves multiple small request-response cycles (DNS lookups, server requests, resource fetches). High ping makes pages feel sluggish even when your download speed is adequate. A 200 ms ping can make a webpage load noticeably slower than a 20 ms ping on the same bandwidth.
What Causes High Ping?
Understanding the causes of high ping helps you address them systematically:
1. Physical Distance to the Server
Data travels at roughly two-thirds the speed of light through fiber-optic cables. Even at that speed, connecting to a server on the other side of the world adds 100–200 ms simply due to the distance. Always choose game servers or CDN regions closest to your physical location.
2. Network Congestion
When too many people use the same network infrastructure simultaneously — during peak evening hours, for example — data packets wait in queues at routers and switches. This queuing delay can spike ping dramatically, even if your baseline connection is fast.
3. WiFi Interference and Wireless Overhead
WiFi introduces wireless protocol overhead, retransmission delays from signal interference, and variable latency that wired connections don't have. Switching from WiFi to Ethernet frequently reduces ping by 10–30 ms and makes it dramatically more consistent.
4. Suboptimal ISP Routing
Your data doesn't travel in a straight line — it passes through multiple routers and sometimes crosses suboptimal paths (called "bad peering") between internet service providers. You can't always control this, but switching ISPs or using a quality VPN sometimes improves routing paths.
5. Overloaded or Underpowered Hardware
Old routers, cheap modems, or underpowered hardware struggle to process packets quickly. A router from 2013 may have a CPU bottleneck that adds unnecessary milliseconds to every packet's journey through your home network.
6. Too Many Devices on the Network
Every device streaming, downloading, or uploading shares your router's processing capacity and your connection's bandwidth. Smart TVs auto-updating, phones syncing backups, and children streaming on tablets can all push up your ping significantly.
How to Reduce Your Ping
Here are the most effective steps, roughly in order of impact:
- Switch to Ethernet. Plug your device directly into your router with a Cat5e or Cat6 cable. This is the single biggest improvement most users can make.
- Connect to the nearest server. In games and apps that let you choose a region or data center, always select the one closest to you geographically.
- Close background applications. Downloads, streaming, and cloud backups all consume bandwidth and CPU cycles that compete with your real-time traffic.
- Restart your router. Routers accumulate stale routing tables and memory pressure over time. A reboot often brings ping down noticeably.
- Update router firmware. Manufacturers release firmware updates that improve performance and reduce processing latency.
- Enable QoS (Quality of Service). Most modern routers support QoS, which lets you prioritize gaming or video-call traffic over lower-priority downloads.
- Upgrade your router. If your router is more than 5 years old, a WiFi 6 or WiFi 6E router will handle concurrent connections much more efficiently.
- Contact your ISP. If ping is consistently high regardless of what you try, your ISP may have a congestion issue. Document your test results and escalate.
How to Test Your Ping Right Now
The quickest way to see your current ping is to run a free speed test. Our tool measures ping, download speed, and upload speed simultaneously in under 30 seconds.
Run your free speed test →
Test Your Connection NowYou can also measure ping from the command line. On Windows, open Command Prompt and type ping google.com. On macOS or Linux, open Terminal and run the same command. The output shows individual packet round-trip times and an average.
Frequently Asked Questions
What is a good ping speed?
Under 20 ms is excellent for any activity. 20–50 ms is good for gaming and video calls. 50–100 ms is acceptable for casual use. Above 150 ms introduces noticeable delays in real-time applications.
Does ping affect video streaming?
Buffered streaming (Netflix, YouTube) is almost entirely unaffected by ping — it depends on download bandwidth. However, live streaming and video calls are sensitive to ping, as they require continuous real-time data exchange.
How do I reduce my ping?
The most effective steps: use a wired Ethernet connection, choose servers close to your location, close background apps, restart your router, update router firmware, and enable QoS if available.
What causes high ping?
Common causes include physical distance to the server, network congestion during peak hours, WiFi interference, outdated router hardware, suboptimal ISP routing, and too many devices competing for bandwidth.