比較一覧表
| 順位 | サービス名 | 料金 | 特徴 | 日本語対応 | プラン | 評価 |
|---|---|---|---|---|---|---|
| 1位 | NordVPN | From $3.69/month | Best balance of speed and security | ◎ | 有料 | ★★★★☆ 4.5 |
| 2位 | ExpressVPN | From $9.32/month | World-class connection speeds | ○ | 有料 | ★★★★☆ 4.4 |
| 3位 | Surfshark | From $2.19/month | Cheapest option with unlimited devices | ○ | 有料 | ★★★★☆ 4.3 |
| 4位 | CyberGhost | From $2.13/month | Dedicated streaming servers | △ | 有料 | ★★★★☆ 4.1 |
| 5位 | ProtonVPN | Free – $4.27/month | Swiss-based, strongest privacy focus | △ | 有料 | ★★★★☆ 4.0 |
NordVPN
“I feel uneasy using the free Wi-Fi at a coffee shop…” “I can’t access my home country’s streaming services while traveling abroad!” — Sound familiar?
A VPN (Virtual Private Network) solves these problems. But with so many VPN services available, most people have no idea which one to choose.
In this article, we provide a thorough comparison of the 5 best VPNs in 2026, evaluated across three key criteria: speed, price, and security. You’ll find the perfect VPN for your needs.
What Is a VPN and Why Do You Need One?
A VPN creates an encrypted virtual tunnel over the internet, making your online activity invisible to third parties.
Here’s what a VPN does for you:
- Encrypts your traffic: Keeps your data safe even on public Wi-Fi
- Hides your IP address: Conceals your location to protect your privacy
- Bypasses geo-restrictions: Access content from other countries or regions
- Prevents ISP tracking: Stops your internet provider from logging your browsing history
In 2026, with the rise of remote work and increasing cyber threats, VPN adoption has become essential even for individuals. With more people using public Wi-Fi than ever, a VPN is no longer “nice to have” — it’s a necessity.
5 Key Factors for Choosing a VPN
1. Connection Speed
VPNs route your traffic through an encrypted tunnel, which inevitably introduces some speed loss. Choosing a VPN that minimizes this impact ensures smooth video streaming and video calls. A speed reduction of less than 20% is considered excellent.
2. Security & Encryption
Security is the primary purpose of a VPN. Always verify that a service supports AES-256 encryption and maintains a no-logs policy (meaning they don’t store your browsing data). Services audited by third-party firms are even more trustworthy.
3. Monthly Pricing
VPN pricing ranges from around $2 to over $10 per month. Most services offer steep discounts for long-term commitments (2-year plans), so if you’re serious about using a VPN, going long-term is the way to save.
4. Simultaneous Device Connections
If you use a smartphone, PC, and tablet, choose a service that supports multiple simultaneous connections. For families, 6 or more simultaneous devices is ideal. Surfshark offers unlimited connections.
5. Server Availability in Your Region
If you need to access region-specific content (like Netflix Japan, TVer, or Abema from abroad), check whether the VPN has servers in the country you need. More servers generally means faster and more stable connections.
Top 5 VPNs: Side-by-Side Comparison
Here’s a quick overview of the five VPN services’ key specs:
| Feature | NordVPN | Surfshark | ExpressVPN | CyberGhost | ProtonVPN |
|---|---|---|---|---|---|
| Monthly Price (2-yr) | $3.69 | $2.19 | $9.32 | $2.13 | Free–$4.27 |
| Servers | 6,400+ | 3,200+ | 3,000+ | 11,500+ | 4,600+ |
| Countries | 111 | 100 | 105 | 100 | 91 |
| Simultaneous Devices | 10 | Unlimited | 8 | 7 | 10 |
| Japan Servers | ○ | ○ | ○ | ○ | ○ |
| No-Logs Policy | ○ (Audited) | ○ (Audited) | ○ (Audited) | ○ | ○ |
| Encryption | AES-256 | AES-256 | AES-256 | AES-256 | AES-256 |
| Free Plan | × | × | × | × | ○ (Limited) |
| Money-Back Guarantee | 30 days | 30 days | 30 days | 45 days | 30 days |
| Overall Rating | ★4.5 | ★4.3 | ★4.4 | ★4.0 | ★4.1 |
For best value, choose Surfshark. For overall quality, NordVPN is the top pick.
Detailed Reviews of Each VPN
1. NordVPN — The Best All-Around VPN
NordVPN is the industry leader with over 14 million users worldwide. It delivers a well-balanced combination of speed, security, and usability that works for everyone from beginners to power users.
NordVPN’s Strengths:
- Proprietary NordLynx protocol for industry-leading speeds
- Double VPN for dual-layer encryption tunnels
- Threat Protection Pro blocks ads and malware
- 6,400+ servers across 111 countries
- Japanese-language apps and customer support
Best for: If you want both speed and security without compromise, start here. The 30-day money-back guarantee means you can try it risk-free.
2. Surfshark — Best Value & Unlimited Devices
Surfshark offers incredible value starting at $2.19/month with unlimited simultaneous device connections. Share it with your entire family at no extra cost.
Surfshark’s Strengths:
- From $2.19/month — among the cheapest in the industry
- Unlimited simultaneous connections — share with family and friends
- CleanWeb blocks ads and trackers
- MultiHop routes traffic through 2 countries
- GPS location spoofing (Android)
Best for: Families or users with many devices, students, and anyone looking to minimize costs.
3. ExpressVPN — The Speed King
Visit ExpressVPN Official Site
ExpressVPN is a premium VPN that consistently ranks at the top for speed. While pricier than competitors, its connection stability and excellent support have built a loyal following.
ExpressVPN’s Strengths:
- Proprietary Lightway protocol for ultra-fast connections
- Servers in 105 countries for maximum flexibility
- All servers run on RAM only — data wiped on every reboot
- Dedicated router app protects all home devices
- 24/7 live chat support (with Japanese availability)
Best for: Those who prioritize speed for streaming or gaming. If quality matters more than price, this is your pick.
4. CyberGhost — World’s Largest Server Network
Visit CyberGhost Official Site
CyberGhost boasts over 11,500 servers, making it one of the largest VPN networks in the world. It offers dedicated servers optimized for streaming and torrenting.
CyberGhost’s Strengths:
- 11,500+ servers across 100 countries
- Dedicated optimized servers for streaming and gaming
- 45-day money-back guarantee — the longest trial period in the industry
- NoSpy servers (self-operated premium servers)
- Full support for Windows, Mac, iOS, and Android
Best for: Avid streamers of international content and anyone who wants the longest risk-free trial period.
5. ProtonVPN — The Only Trustworthy Free VPN
ProtonVPN is developed by Proton, the company behind the encrypted email service ProtonMail. It’s a privacy-first VPN with a free plan that has no data cap — making it the best option for anyone looking for a reliable free VPN.
ProtonVPN’s Strengths:
- Unlimited data on the free plan (speed limits apply, 5 countries)
- Based in Switzerland, protected by Swiss privacy laws
- Open-source apps for full transparency
- Secure Core for multi-layer encryption
- NetShield blocks ads and malware
Best for: Those who want to try a VPN for free, or anyone who prioritizes privacy above all else. Upgrading to a paid plan removes speed limitations.
Best VPN by Use Case
Streaming from Abroad (Netflix, Hulu, BBC iPlayer)
For accessing geo-restricted streaming content, NordVPN or ExpressVPN are your best bets.
Both services maintain a large number of servers optimized for streaming, delivering fast connections that handle HD content without buffering. They work with all major streaming platforms.
Public Wi-Fi Protection (Cafes, Airports, Hotels)
For staying safe on public Wi-Fi, NordVPN or Surfshark are recommended.
Public Wi-Fi networks are vulnerable to man-in-the-middle (MITM) attacks. A VPN encrypts your connection, dramatically reducing the risk of password and credit card information leaks.
NordVPN’s Threat Protection Pro also blocks phishing sites, adding an extra layer of security.
Remote Work & Telecommuting
For accessing company systems from home or on the go, ExpressVPN or NordVPN offer the best stability and speed.
Stable speeds are essential for video calls and cloud services. Both of these services keep speed reduction to a minimum. For business use, prioritize connection reliability and customer support quality.
For more on protecting your digital life, check out our Password Manager Comparison article. Pairing strong password management with a VPN is the key to bulletproof remote work security.
Things to Keep in Mind When Using a VPN
- Be cautious with free VPNs: Aside from ProtonVPN, most free VPNs monetize through ads and data collection, which can compromise your privacy
- Speed varies by environment: Connection speed fluctuates based on server distance and network conditions
- Check terms of service: Some streaming services may restrict VPN access in their terms of use
- Restricted countries: In countries with strict VPN regulations (like China), verify compatibility before traveling
Summary: Best VPN by Use Case
| Use Case | Recommended VPN | Why |
|---|---|---|
| Best Overall | NordVPN | Top marks for speed, security, and usability |
| Best Value | Surfshark | From $2.19/month + unlimited devices |
| Fastest Speeds | ExpressVPN | Proprietary Lightway protocol |
| Best Free Option | ProtonVPN | The only trustworthy free plan |
| Best for Streaming | CyberGhost | Dedicated streaming-optimized servers |
If you’re unsure, start with NordVPN. With a 30-day money-back guarantee, you can test the speed and app experience before committing.
Once your VPN is set up, why not review where you store your data? Our Cloud Storage Comparison article provides a thorough breakdown of Google Drive, Dropbox, and OneDrive. Combining strong security with smart data management means true peace of mind online.
NordVPN 総合評価
よくある質問(FAQ)
Is using a VPN illegal?
VPN usage is completely legal in most countries, including Japan and the United States. However, using a VPN to carry out illegal activities is, of course, still illegal. Some countries like China and Russia impose restrictions on VPN use.
Are free VPNs safe?
Many free VPNs collect and sell user data to generate revenue, which poses significant privacy risks. If you want to stay safe for free, we recommend ProtonVPN's free plan or using the money-back guarantee offered by NordVPN or Surfshark.
Does using a VPN slow down my internet?
Encryption overhead typically causes a 5–15% speed reduction. However, with premium VPNs like NordVPN or ExpressVPN, the difference is barely noticeable. In some cases, a VPN can actually speed things up by bypassing ISP throttling.
Products & Services in This Article
NordVPN
Surfshark
ExpressVPN
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