TV Series Marathon Calculator

Find out how long it takes to binge any series — and plan the perfect watching schedule.

📺 Series Details

min
hrs/day

🎬 Marathon Results

Weekend (10h)Epic (100h+)
At 1× Speed
Your Speed
Days to Finish
Finish Date
Time Saved
Episodes/Day
Total = Episodes × Length
Adjusted = Total ÷ Speed

Days to Finish at Different Daily Hours

Slow (0.75×)
Best for complex dramas
Normal (1×)
Intended viewing pace
Comfortable (1.25×)
Barely noticeable
Fast (1.5×)
Sweet spot for most
Speed Run (2×)
Max practical speed

Days to Finish — Speed × Daily Hours

Recommended Speed by Content Type (click to apply)

Hours Saved vs Watching at 1× Speed

My Queue

Queue multiple series and track your total time commitment.

How to Use the TV Marathon Calculator

1
Choose a series or enter details

Pick from 14 popular presets (filter by genre) or manually enter episode count and average episode length.

2
Set playback speed & daily hours

Most streaming services support 0.75×–2× speed. Enter how many hours per day you plan to watch to get a finish date.

3
Analyze & plan your binge

Check the Binge Analysis tab for the speed/hours sensitivity matrix and genre speed guide. Use My Queue to plan multiple shows.

Formulas

Total Runtime = Episodes × Episode Length
Adjusted Time = Total ÷ Playback Speed
Days = Adjusted Time ÷ Daily Hours
Time Saved = Total − Adjusted

Key Terms

Playback Speed

Most streaming platforms support 0.5×–2× speed. 1.5× is the most popular setting among binge-watchers for non-dialogue-heavy shows.

Binge Watching

Defined as watching 3+ episodes in one sitting. Americans average ~3.5 hours of TV per day, allowing most to complete a 50-hour series in roughly 2 weeks.

Episode Count

Varies hugely — miniseries can be 3–10 episodes while long-running shows like ER (331 eps) or Grey's Anatomy (400+ eps) run for years.

Marathon Session

An extended viewing of multiple episodes in one go. Sleep researchers recommend no more than 3–4 hours per session to avoid sleep disruption.

Frequently Asked Questions

How long does it take to watch a full TV series?

It depends entirely on the show. A short 10-episode miniseries at 45 minutes each is only 7.5 hours, while a long-running show like The Simpsons (700+ episodes × 22 min) would take over 250 hours. Use the calculator above to find the exact time for any series.

What is the most popular binge-watching speed?

1.25× to 1.5× is the most common. Many people watch reality TV, cooking shows, and low-dialogue content at 1.5×. Complex dialogue-heavy shows like Succession or The Wire are usually watched at 1×.

How many episodes per day is considered binge-watching?

Researchers generally define binge-watching as 3+ episodes in a single sitting. For a 45-minute drama, that's just over 2 hours. For a 22-minute sitcom, 3 episodes is only about an hour.

Does 2× speed affect comprehension?

For dialogue-heavy shows, 2× can be challenging. Comedy and drama with fast dialogue is hard to follow. Reality TV, documentaries, and talk shows are easier to watch at higher speeds. The Binge Analysis tab shows genre-specific recommendations.

Which streaming services support variable playback speed?

Netflix, YouTube, Disney+, HBO Max, Peacock, and most major platforms support 0.5×–2× speed. Apple TV+ supports variable speeds on mobile and web. Live TV and cable generally do not support this feature.

What's the longest TV series ever made?

Guiding Light ran for 72 years (1937–2009). In modern episodic TV, long-running shows like Law & Order (500+ eps), ER (331 eps), and Grey's Anatomy (400+ eps) would take 100–200+ hours to watch completely.

How does the sensitivity matrix work?

The sensitivity matrix in the Binge Analysis tab shows days to finish for every combination of playback speed (0.75×–2×) and daily hours (1–6 hrs/day). Cells are heat-mapped from green (fewest days) to red (most days), and your current settings are highlighted.

How do I use the My Queue feature?

In the My Queue tab, enter a series name, episode count, and minutes per episode, then click Add. You can queue as many series as you like. The summary shows total episodes, raw time, and days needed at 2 or 3 hrs/day. You can also export your queue as a CSV file.