Network Latency & Jitter Quality
Assess network quality for gaming, VoIP, and video. Enter values for instant results with step-by-step formulas.
Formula
Quality = Latency Score × 0.4 + Jitter Score × 0.3 + Packet Loss Score × 0.3
Worked Examples
Example 1: Excellent Home Network
Problem:Latency: 12ms, Jitter: 2ms, Packet Loss: 0.1%, Bandwidth: 500Mbps. Test for gaming and video conferencing.
Solution:Gaming thresholds: <50ms latency, <15ms jitter, <0.5% loss\nActual: 12ms, 2ms, 0.1% ✓ All pass\n\nVideo conf thresholds: <100ms, <20ms, <0.5%\nActual: Well within limits ✓\n\nScores:\nLatency: (1 - 12/50) × 100 = 76%\nJitter: (1 - 2/15) × 100 = 87%\nPacket Loss: (1 - 0.1/0.5) × 100 = 80%\nOverall: 0.4×76 + 0.3×87 + 0.3×80 = 80.5\n\nQuality Rating: Good (would be Excellent with even lower latency)\n\nThis network supports all use cases well.
Result:81/100 quality (Good) | Suitable for gaming + video | Low jitter ideal
Example 2: Problematic Wi-Fi
Problem:Latency: 85ms, Jitter: 35ms, Packet Loss: 2%, Bandwidth: 200Mbps. Test for VoIP.
Solution:VoIP thresholds: <150ms, <30ms jitter, <1% loss\n\nActual vs thresholds:\nLatency: 85ms < 150ms ✓\nJitter: 35ms > 30ms ✗ (FAIL)\nPacket Loss: 2% > 1% ✗ (FAIL)\n\nScores:\nLatency: (1 - 85/150) × 100 = 43%\nJitter: (1 - 35/30) × 100 = -17% → 0%\nPacket Loss: (1 - 2/1) × 100 = -100% → 0%\nOverall: 0.4×43 = 17.2\n\nQuality Rating: Unusable for VoIP\n\nProblems:\n- High jitter causes choppy audio\n- Packet loss causes dropouts\n\nLikely Wi-Fi issues. Solutions:\n- Switch to Ethernet\n- Reduce Wi-Fi interference (change channel)\n- Enable QoS for VoIP priority
Result:17/100 quality (Unusable) | Jitter and packet loss fail | Wi-Fi issues likely
Example 3: Marginal for Remote Work
Problem:Latency: 120ms, Jitter: 25ms, Packet Loss: 0.8%, Bandwidth: 50Mbps. Test for video conferencing.
Solution:Video conferencing thresholds: <100ms, <20ms, <0.5%\n\nActual vs thresholds:\nLatency: 120ms > 100ms (marginal)\nJitter: 25ms > 20ms (marginal)\nPacket Loss: 0.8% > 0.5% (marginal)\n\nScores:\nLatency: (1 - 120/100) × 100 = -20% → 0%\nJitter: (1 - 25/20) × 100 = -25% → 0%\nPacket Loss: (1 - 0.8/0.5) × 100 = -60% → 0%\nOverall: Very low\n\nQuality Rating: Poor\n\nExperience:\n- Slight delay in conversations\n- Occasional audio artifacts\n- Some video freezing\n\nWorkable but not ideal. Improvements:\n1. Upgrade internet plan for better routing\n2. Use wired connection\n3. Close background apps using bandwidth
Result:Poor quality | Marginal for video calls | Upgrade connection or use wired
Frequently Asked Questions
What is network latency?
Latency is the time for data to travel from source to destination, measured in milliseconds (ms). Also called ping. Composed of: propagation delay (signal travel time), transmission delay (packet serialization), queuing delay (router processing), and processing delay. Lower is better—under 50ms is excellent, 50-100ms good, over 150ms impacts real-time apps.
What is jitter?
Jitter is variation in latency—the difference between fastest and slowest ping times. If latency is consistently 50ms, jitter is low. If it varies 30-80ms, jitter is 50ms. High jitter causes: choppy VoIP calls, video buffering, game lag spikes. VoIP requires <30ms jitter; video conferencing <20ms ideal.
What causes high latency?
Causes include: physical distance to server (speed of light limit), number of router hops, congested networks (too much traffic), Wi-Fi interference, old equipment, ISP throttling, or poor routing. Wired connections have lower latency than Wi-Fi. CDNs reduce latency by serving content from nearby servers.
What's the difference between bandwidth and latency?
Bandwidth is pipe width (how much data can flow); latency is length (how long it takes to arrive). You can have 1Gbps bandwidth but 200ms latency. Gaming needs low latency, doesn't care much about bandwidth. 4K streaming needs high bandwidth, tolerates moderate latency. Both matter, different use cases.