What Channel is Cinemax on Xfinity Comcast?

You’ve finally settled onto the couch, popcorn in hand, ready to watch Warrior or catch a late-night action classic. You grab the remote, but there’s a problem: you have no idea what channel Cinemax is on.

If you are scrolling endlessly through the guide, you aren’t alone. As someone who has analyzed cable lineups for over a decade, I can tell you that Xfinity’s channel numbering system is notoriously fragmented. It varies not just by state, but often by zip code.

The short answer? There isn’t one universal channel number for Cinemax on Xfinity.

However, don’t worry. This guide will provide you with the most common channel numbers for major cities, the “foolproof” method to instantly find your specific channel, and the “hidden” voice commands that make channel numbers obsolete.

Read also: What Channel is TNT on Xfinity?

The “Cheat Sheet”: Cinemax Channel Numbers in Major Hubs

While Xfinity lineups are hyper-local, many regions share similar band assignments. Below is a quick reference table I’ve compiled based on the most recent 2024-2025 lineup data for major metropolitan areas.

Note: These numbers usually apply to the primary “Cinemax East” or “Cinemax West” feed. HD channels are often located in the 1000+ range.

Chicago, IL	320	218 / 1821
San Francisco, CA	563	821 / 1821
Houston, TX	320	490 / 1821
Philadelphia, PA	320	821 / 1821
Seattle, WA	563	667 / 1821
Miami, FL	320	440 / 1821
Atlanta, GA	320	821 / 1821
Denver, CO	563	778 / 1821

Pro Tip: If you see a channel number in the 1800s (like 1821), try that first. Xfinity has been standardizing premium HD channels into the 1000+ range across many markets to unify the experience.

Read also: What Channel is Bravo on Xfinity?

The “Foolproof” Way to Find Cinemax (No Scrolling Required)

If you don’t live in one of the cities above, or if those numbers aren’t working, stop guessing. Here are two methods that are faster than Googling your zip code.

Method 1: The Xfinity Voice Remote (The 2-Second Fix)

I cannot stress this enough: if you have an X1 Voice Remote (the one with the blue or silver microphone button), you do not need to know the channel number.

1. Press and hold the Microphone button.
2. Say “Cinemax” or “Watch Cinemax.”
3. Release the button.

The X1 box will automatically tune you to the HD feed of the main Cinemax channel. It bypasses the guide entirely.

Method 2: The On-Screen Guide Filter

If you prefer browsing to see what’s playing on all Cinemax channels (like ActionMAX or ThrillerMAX), use the guide filter:

1. Press the Guide button on your remote.
2. Press the Guide button again to bring up the “Select Your View” menu.
3. Scroll to Premium and press OK.
4. This will hide all the news, sports, and broadcast channels, leaving only HBO, Showtime, and Cinemax visible.

Read also: What Channel is FX on Xfinity?

Is Cinemax Included in My Package? (Pricing & Subscription)

A common misconception is that if you have HBO or the “Premier” package, you automatically get Cinemax. This is no longer the case for many modern Xfinity plans.

Current Pricing (2025)

As of early 2025, Cinemax is typically sold as an à la carte add-on.

• Cost: ~$12.00 per month.
• Bundles: Occasionally bundled with HBO or Starz during promotional periods, but less common than in previous years.

How to Subscribe Instantly

You don’t need to call customer support. You can add the channel directly through your TV:

1. Use your Voice Remote and say “Subscribe to Cinemax.”
2. Follow the on-screen prompts to confirm the $12/mo addition.
3. The channel should activate within 5-10 minutes.

Information Gain: The “Max” Confusion

Here is a detail that trips up many of my readers. You might assume that because you have HBO Max (now just “Max”), you have access to Cinemax content.

This is false.

Despite being owned by the same parent company (Warner Bros. Discovery), Cinemax content is NOT available in full on the Max streaming app.

• The Difference: “Max” is primarily HBO + Discovery content. Cinemax operates as a separate entity with its own library of movies (often action- and thriller-focused) and original series like Banshee and Warrior.
• The Lesson: If you want to watch Cinemax originals, you must subscribe to the Cinemax add-on specifically. You cannot simply log into the Max app to find them.

Read also: What Channel is CBS on Xfinity?

Troubleshooting: “Channel Not Authorized”

If you tune to Cinemax (e.g., channel 320) and see a black screen or a “Not Authorized” message, but you know you are paying for it, try these steps before calling a technician:

1. System Refresh: Say “System Refresh” into your voice remote. This takes about 10 minutes and fixes 90% of permission glitches.
2. Check the “Free Preview” Trap: Sometimes Xfinity offers a free preview weekend. If that weekend ends, the channel remains in your “Favorites” list but stops working. You may need to officially subscribe.
3. Use the App: If the TV box is acting up, open the Xfinity Stream App on your phone or tablet. If Cinemax works there, the issue is your physical cable box, not your account.

Frequently Asked Questions (FAQ)