IEEE 802.11 WiFi Standards Reference

A comprehensive, filterable reference of every WiFi standard from the original 802.11 to the latest 802.11be (WiFi 7). Compare speeds, frequencies, channel widths, and key features to understand your router's capabilities and plan upgrades.

Search WiFi Standards

Standard	WiFi Gen	Year	Frequency	Max Speed	Channel Width	Key Feature

Figure 1 — IEEE 802.11 WiFi Standards Reference

What Are IEEE 802.11 Standards?

The IEEE 802.11 family of standards defines how wireless local area networks (WLANs) operate. Developed by the Institute of Electrical and Electronics Engineers, these standards specify the radio frequencies, modulation techniques, data rates, and security protocols used by every WiFi device. When you connect to WiFi on your router, you're using one of these standards.

The Wi-Fi Alliance introduced simplified naming (WiFi 4, 5, 6, 7) in 2018 to make it easier for consumers to understand which generation of WiFi technology their devices support. This replaced the confusing 802.11n/ac/ax naming for marketing purposes, though the IEEE standard names remain the official technical designations.

WiFi Generation Comparison

Generation	Standard	Max Speed	Bands	Key Improvement
WiFi 4	802.11n	600 Mbps	2.4 + 5 GHz	MIMO, dual-band, 40 MHz channels
WiFi 5	802.11ac	6.9 Gbps	5 GHz only	MU-MIMO, 80/160 MHz, beamforming
WiFi 6	802.11ax	9.6 Gbps	2.4 + 5 GHz	OFDMA, TWT, BSS coloring
WiFi 6E	802.11ax	9.6 Gbps	2.4 + 5 + 6 GHz	6 GHz band (1200 MHz new spectrum)
WiFi 7	802.11be	46 Gbps	2.4 + 5 + 6 GHz	MLO, 320 MHz, 4096-QAM

Pro Tip: Your actual WiFi speed will always be significantly lower than the theoretical maximum. Real-world performance depends on distance, obstacles, interference, number of connected devices, and client device capabilities. To test your actual throughput, use our Speed Test. For optimal WiFi performance, choose the right channel with our WiFi Channel Finder and ensure your router firmware is up to date.

WiFi 6 (802.11ax) Key Technologies

WiFi 6 introduced several technologies that significantly improve performance in dense environments:

Technology	What It Does	Benefit
OFDMA	Divides channels into smaller sub-channels (resource units)	Serves multiple devices simultaneously; reduces latency
MU-MIMO (8x8)	Eight simultaneous data streams up and down	More devices served at once; better throughput
1024-QAM	Encodes 10 bits per symbol (vs 8 bits in 256-QAM)	25% higher peak throughput
TWT	Target Wake Time — schedules device wake-up times	Dramatically improves IoT battery life
BSS Coloring	Tags transmissions to differentiate nearby networks	Reduces interference from neighboring networks

WiFi 7 (802.11be) Advances

WiFi 7 represents the biggest leap in WiFi technology since WiFi 6:

Multi-Link Operation (MLO) — Simultaneously uses multiple bands (2.4 + 5 + 6 GHz) for a single connection, improving throughput and reducing latency.
320 MHz channels — Double the maximum channel width of WiFi 6, enabling much higher speeds on the 6 GHz band.
4096-QAM — Encodes 12 bits per symbol, increasing peak throughput by 20% over WiFi 6's 1024-QAM.
16 spatial streams — Theoretically supports 16 simultaneous spatial streams for aggregate throughput up to 46 Gbps.

Frequency Bands Explained

Band	Range	Pros	Cons	Best For
2.4 GHz	2400-2484 MHz	Long range, penetrates walls	Crowded, only 3 non-overlapping channels, slower	IoT devices, distant rooms
5 GHz	5150-5850 MHz	More channels, less interference, fast	Shorter range, less wall penetration	Streaming, gaming, close range
6 GHz	5925-7125 MHz	Massive new spectrum, very fast, zero legacy interference	Shortest range, requires WiFi 6E/7 devices	High-density, VR/AR, 4K streaming

Choose the right frequency band based on your needs. For help optimizing your WiFi setup, use our WiFi Channel Finder and WiFi Frequency Picker. Test your current performance with our Speed Test and Bandwidth Calculator.

Note: WiFi standards are backward compatible within their frequency bands. A WiFi 6 router supports WiFi 5 and WiFi 4 devices, but those older devices will connect at their maximum capabilities, not WiFi 6 speeds. Similarly, a WiFi 6 device connecting to a WiFi 5 router will operate at WiFi 5 speeds. For the best performance, both your router and client devices should support the same WiFi generation.

WiFi Security Standards

WiFi security has evolved alongside the performance standards:

Security	Year	Encryption	Status
WEP	1999	RC4 (64/128-bit)	Broken — never use
WPA	2003	TKIP	Deprecated — avoid
WPA2	2004	AES-CCMP	Standard — use as minimum
WPA3	2018	AES-GCMP, SAE	Current best — use when available

Always use WPA2 or WPA3 on your WiFi network. See our guide on how to secure your home WiFi network and use a strong password. Check your WiFi security with our WiFi Password Checker.

Choosing the Right WiFi Standard

Basic home use — WiFi 5 (802.11ac) is sufficient for most households with moderate device counts.
Smart home with many devices — WiFi 6 (802.11ax) handles dense device environments much better with OFDMA and TWT.
High-performance / gaming — WiFi 6E adds the uncrowded 6 GHz band for low-latency, high-throughput connections.
Future-proofing — WiFi 7 (802.11be) offers the highest performance with MLO and 320 MHz channels.

Before upgrading, check your current internet speed with our Speed Test. There's no benefit to WiFi 7 if your internet plan is 100 Mbps — the bottleneck is your ISP, not your WiFi. Also consider your device ecosystem: you need both a WiFi 6/7 router and compatible client devices to benefit from new standards.

Key Takeaways

WiFi generations: WiFi 4 (n) → WiFi 5 (ac) → WiFi 6 (ax) → WiFi 6E (ax + 6GHz) → WiFi 7 (be).
Real-world speeds are always much lower than theoretical maximums.
WiFi 6's OFDMA and TWT are the biggest improvements for multi-device homes.
WiFi 6E and 7 add the 6 GHz band — uncrowded but shorter range.
Always use WPA2 or WPA3 security. Never use WEP or WPA.
Both router and client devices need to support the same WiFi generation for maximum benefit.

Video: WiFi Standards Explained

Related Tools and Guides

Frequently Asked Questions

What is the latest WiFi standard?

WiFi 7 (IEEE 802.11be), released in 2024, is the latest WiFi standard. It supports speeds up to 46 Gbps with features like Multi-Link Operation (MLO), 320 MHz channels, and 4096-QAM. It operates across 2.4 GHz, 5 GHz, and 6 GHz bands simultaneously.

What is the difference between WiFi 5 and WiFi 6?

WiFi 6 (802.11ax) improves on WiFi 5 (802.11ac) with: OFDMA for efficient multi-device access, uplink MU-MIMO, 1024-QAM for higher throughput, Target Wake Time for battery savings, and BSS coloring to reduce interference. WiFi 6 also returns dual-band (2.4 + 5 GHz) support.

Do I need WiFi 6E or WiFi 7?

WiFi 6E and 7 are worth it if you have many WiFi 6E/7 compatible devices, live in a dense area with WiFi interference, need very low latency (gaming, VR), or have an internet plan over 1 Gbps. For basic home use with fewer devices, WiFi 6 is sufficient and more affordable.

What is the 6 GHz band?

The 6 GHz band (5925-7125 MHz) was opened for WiFi use starting with WiFi 6E. It provides 1200 MHz of new spectrum — more than double what was available at 5 GHz. This band is uncrowded because only WiFi 6E and newer devices can use it, resulting in less interference and higher performance.

Are WiFi standards backward compatible?

Yes, within the same frequency bands. A WiFi 6 router supports WiFi 5 and WiFi 4 devices, but those devices will connect at their own maximum speeds. A WiFi 5 device cannot use WiFi 6 features. For best results, match your router and device generations.

What WiFi security should I use?

Use WPA3 if all your devices support it; otherwise use WPA2 with AES encryption. Never use WEP (easily cracked in minutes) or WPA with TKIP (deprecated). Most modern routers support WPA2/WPA3 mixed mode, which is the best option for compatibility with older devices.

Why is my WiFi slower than advertised?

Advertised WiFi speeds are theoretical maximums under perfect conditions. Real-world speeds are reduced by: distance from router, walls and obstacles, interference from other networks, number of connected devices, and your internet plan speed. Test your actual speed with our speed test to measure real throughput.

About Tommy N.

Tommy is the founder of RouterHax and a network engineer with 10+ years of experience in home and enterprise networking. He specializes in router configuration, WiFi optimization, and network security. When not writing guides, he's testing the latest mesh WiFi systems and helping readers troubleshoot their home networks.