Computer uptime refers to the amount of time your PC has been running since its last restart or shutdown. Checking system uptime can be useful for many reasons. IT professionals often use uptime information to monitor system stability, diagnose performance problems, and determine whether a restart is needed after software updates. Home users may also want to check uptime when troubleshooting slow performance, memory issues, network problems, or applications that behave unexpectedly after running for long periods.
Windows 11 and Windows 10 provide several built-in ways to view uptime information. You can check uptime through Task Manager, Command Prompt, PowerShell, System Information, and other Windows tools without installing any third-party software. Each method displays the same basic information but in a slightly different format.
Whether you are troubleshooting a problem, verifying system stability, or simply curious about how long your computer has been running, Windows makes it easy to find this information. In this guide, you will learn multiple methods to check your computer uptime on Windows 11 and Windows 10.
What Is Computer Uptime?
Uptime is the total amount of time that has passed since Windows was last started. Every time you restart your computer, the uptime counter resets to zero and begins counting again.
For example:
- If your PC was restarted 5 hours ago, uptime will show 5 hours.
- If your PC has been running continuously for 10 days, uptime will show 10 days.
- If Windows was shut down and started again, uptime begins from the latest startup.
Knowing uptime can help determine whether recent system changes, updates, or performance issues may require a fresh restart.
Method 1: Check Uptime Using Task Manager
Task Manager provides the quickest and easiest way to view computer uptime.
Follow these steps:
- Press Ctrl + Shift + Esc to open Task Manager.
- If Task Manager opens in compact view, click More details.
- Select the Performance tab.
- Click CPU in the left pane.
- Locate the Up time field near the bottom.
You will see a value similar to:
5:12:35:18
This format represents:
- Days
- Hours
- Minutes
- Seconds
For example:
3:08:45:20Means:
- 3 days
- 8 hours
- 45 minutes
- 20 seconds
Task Manager updates this information in real time and is usually the fastest way to check system uptime.
Method 2: Check Uptime Using Command Prompt
Command Prompt can display system boot information and uptime details.
Follow these steps:
- Press Windows + S.
- Type cmd.
- Open Command Prompt.
- Enter the following command:
systeminfo | find "System Boot Time"Press Enter.
Windows will display the date and time when the computer last started.
Example:
System Boot Time: 6/15/2026, 8:30:14 AMYou can compare the current time with the boot time to determine uptime.
This method is useful for administrators who frequently use command-line tools.
Method 3: Check Uptime Using PowerShell
PowerShell can calculate uptime automatically and provide detailed information.
Follow these steps:
- Press Windows + X.
- Select Windows PowerShell or Terminal.
- Type:
(get-date) - (gcim Win32_OperatingSystem).LastBootUpTimePress Enter.
PowerShell will display results similar to:
Days : 4
Hours : 12
Minutes : 30
Seconds : 18This method provides an accurate uptime breakdown without requiring manual calculations.
Method 4: Check Last Boot Time Using System Information
System Information contains detailed information about your computer, including startup details.
Follow these steps:
- Press Windows + R.
- Type:
msinfo32- Press Enter.
When System Information opens:
- Locate System Summary.
- Find System Boot Time.
Windows displays the exact date and time the operating system started.
This tool is especially useful when collecting system information for troubleshooting.
Method 5: Use WMIC Command
Although WMIC is gradually being phased out in newer Windows versions, it still works on many systems.
Follow these steps:
- Open Command Prompt.
- Enter:
wmic os get lastbootuptime- Press Enter.
You will see output similar to:
20260615103015.500000+330This value represents the last startup date and time.
Administrators often use WMIC commands when creating scripts and automation tasks.
Method 6: Check Uptime Using Network Statistics
Windows stores workstation statistics that include uptime information.
Follow these steps:
- Open Command Prompt.
- Type:
net statistics workstation- Press Enter.
Near the top of the output, look for:
Statistics sinceExample:
Statistics since 6/15/2026 8:30:14 AMThis indicates when the workstation service started, which usually matches system startup time.
This method works on most Windows 10 and Windows 11 installations.
Method 7: View Uptime Through Resource Monitor
Resource Monitor provides detailed performance information, including system runtime.
Follow these steps:
- Press Windows + R.
- Type:
resmon- Press Enter.
In Resource Monitor:
- Select the Overview tab.
- Locate the CPU section.
- Look for uptime information.
This tool is useful when monitoring system resources and performance simultaneously.
Method 8: Create A Desktop Uptime Command Shortcut
If you frequently check uptime, you can create a shortcut for quick access.
Follow these steps:
- Right-click the desktop.
- Select New → Shortcut.
- Enter:
powershell.exe -command "(get-date) - (gcim Win32_OperatingSystem).LastBootUpTime"- Click Next.
- Name the shortcut.
- Click Finish.
Double-clicking the shortcut will immediately display current uptime information.
This method is particularly useful for administrators and advanced users.
Understanding Fast Startup And Uptime
Windows Fast Startup can sometimes affect uptime reporting.
Fast Startup works by partially hibernating the operating system instead of performing a complete shutdown. Because of this, uptime may continue counting even after a normal shutdown.
To reset uptime accurately:
- Use Restart instead of Shut Down.
- Or disable Fast Startup.
To disable Fast Startup:
- Open Control Panel.
- Select Power Options.
- Click Choose what the power buttons do.
- Click Change settings that are currently unavailable.
- Uncheck: Turn on fast startup
- Save the changes.
After a full restart, uptime values will reflect actual system runtime.
Why Monitoring Uptime Can Be Helpful
Checking uptime can assist with several common situations:
- Diagnosing slow system performance.
- Confirming whether a restart occurred.
- Verifying update installation requirements.
- Monitoring server stability.
- Tracking application crashes.
- Troubleshooting memory leaks.
- Identifying long-running processes.
- Checking remote workstation activity.
Many technical support professionals begin troubleshooting by checking system uptime because numerous issues can be resolved with a simple restart.
Frequently Asked Questions
What does uptime mean in Windows?
Uptime represents the amount of time Windows has been running since the last restart or full system startup.
What is the easiest way to check uptime?
Task Manager is usually the fastest method. Open Task Manager, select the Performance tab, click CPU, and view the Up time value.
Why does uptime not reset after shutting down?
Windows Fast Startup may keep portions of the operating system loaded between shutdowns. Restarting the computer performs a complete reboot and resets uptime.
Can I check uptime using Command Prompt?
Yes. Commands such as systeminfo, net statistics workstation, and wmic os get lastbootuptime can display startup information.
Is uptime useful for troubleshooting?
Yes. Long uptime periods can sometimes contribute to performance problems, memory leaks, and software instability. Checking uptime helps determine whether a restart may resolve issues.
Does uptime affect computer performance?
Not directly. However, systems running continuously for extended periods may accumulate memory usage, temporary files, or background processes that can impact performance over time.
Final Thoughts
Checking computer uptime on Windows 11 and Windows 10 is a simple yet valuable way to monitor system activity and troubleshoot performance issues. Whether you use Task Manager, Command Prompt, PowerShell, System Information, or Resource Monitor, Windows offers several built-in methods for viewing exactly how long your computer has been running since its last startup.
For most users, Task Manager provides the quickest solution, while PowerShell offers the most detailed uptime calculations. Administrators and advanced users may prefer command-line methods for automation and scripting purposes. Understanding uptime can also help identify whether recent slowdowns, application problems, or update issues might be resolved with a simple restart.
By using the methods covered in this guide, you can quickly determine your computer’s uptime, monitor system stability, and gain useful insight into the overall health and performance of your Windows 11 or Windows 10 PC.
