Charging time depends on which MacBook model you own and what charger you use
A MacBook typically charges from empty to full in two to four hours, but the exact time depends on three things: your specific model, the wattage of your charger, and whether you're using the laptop while it charges. A 14-inch MacBook Pro with a 140W charger reaches full battery in roughly two hours. A MacBook Air with a 45W charger takes closer to three to four hours. If you're working while it charges, add another hour or more to that estimate.
The reason the range is so wide is that Apple ships different MacBooks with different chargers, and using a lower-wattage charger than the one designed for your model will charge it more slowly. You can also use third-party chargers, which may charge faster or slower depending on their wattage and your MacBook's power management.
Key Takeaways
- MacBook Pro models charge faster than MacBook Air models because they come with higher-wattage chargers — typically 96W to 140W versus 45W to 67W.
- Using your MacBook while it charges slows the charging process significantly, sometimes adding an hour or more to the total time.
- A lower-wattage charger than the one designed for your model will charge your MacBook more slowly, even if it still works.
- Newer MacBook models with M3, M4, and later chips charge faster than older Intel-based models, all else equal.
Charging times by MacBook model and charger wattage
The fastest way to know your charging time is to match your exact model and charger. Here's what to expect with the charger that shipped with each MacBook:
| MacBook Model | Shipped Charger Wattage | Typical Charge Time (Empty to Full) |
|---|---|---|
| MacBook Air 13-inch (M3, M4) | 45W | 3 to 4 hours |
| MacBook Air 15-inch (M3, M4) | 67W | 2.5 to 3.5 hours |
| MacBook Pro 14-inch (M4, M4 Pro) | 96W to 140W | 1.5 to 2 hours |
| MacBook Pro 16-inch (M4 Pro, M4 Max) | 140W to 240W | 1.5 to 2 hours |
| MacBook Air 13-inch (M2, M1) | 45W | 3 to 4 hours |
| MacBook Pro 14-inch (M3, M3 Pro, M3 Max) | 96W to 140W | 1.5 to 2.5 hours |
These times assume you're not using the MacBook while it charges and that the battery is completely empty. In real life, most people charge from 20 or 30 percent rather than zero, which cuts the time by roughly a third.
Why using your MacBook while charging slows it down
When you use your MacBook for demanding tasks — video editing, compiling code, running virtual machines — the charger has to power both the laptop and recharge the battery at the same time. The power that would normally go entirely to the battery gets split between the two jobs, so charging slows dramatically.
Light tasks like email or web browsing have less impact. A MacBook Air charging with a 45W charger while you browse the web might still charge in four to five hours. The same MacBook running Final Cut Pro might take six to eight hours or longer, because the processor and GPU are drawing significant power.
If you need your MacBook charged quickly, close unnecessary applications, dim the screen, and let it sit idle while plugged in. You'll see the difference within the first hour.
What happens if you use a different charger
MacBooks support USB-C Power Delivery, which means you can charge them with many third-party chargers — including phone chargers, iPad chargers, and universal laptop chargers. The wattage of the charger you use determines how fast it charges.
A MacBook Air designed for a 45W charger will charge slowly if you use a 20W phone charger, because the charger can't deliver enough power fast enough. The MacBook will still charge, but it might take six to eight hours instead of three to four. Using a higher-wattage charger than the one designed for your model won't damage the battery — Apple's power management prevents overcharging — but it also won't charge faster than the maximum your MacBook is designed to accept.
If you travel or work in multiple locations, a 65W or 96W USB-C charger is a practical middle ground. It will charge any MacBook Air at reasonable speed and work with most other devices too.
Battery age and temperature affect charging speed
An older MacBook battery charges more slowly than a new one, though the difference is usually small in the first few years. After three to five years of regular charging cycles, you might notice charging takes 10 to 20 percent longer than it did when the MacBook was new.
Temperature also matters. MacBooks charge more slowly in cold environments and may stop charging entirely if the battery gets too cold. If you've left your MacBook in a car overnight in winter, let it warm up to room temperature before plugging it in. Charging in very hot environments — direct sunlight, next to a heater — can also slow charging and degrade the battery over time.
How to check your MacBook's actual charging speed
To see how fast your MacBook is currently charging, hold Option and click the battery icon in the menu bar. You'll see a line that says "Condition: Normal" or similar, and below that, the wattage your charger is currently delivering. If it says "Charging" with a wattage number, that's how much power is flowing to your battery right now.
If the wattage is much lower than your charger's rated wattage — for example, a 45W charger showing only 20W — your MacBook is likely running demanding tasks or the battery is nearly full. MacBooks slow charging as the battery approaches 100 percent to protect battery health.
Frequently Asked Questions
Can I charge my MacBook faster by using a higher-wattage charger?
No. Your MacBook has a maximum charging speed built in, and using a charger with higher wattage won't exceed it. A MacBook Air will charge at the same speed with a 65W charger as it will with a 45W charger — the 65W charger just has more capacity to spare. The MacBook's power management prevents it from drawing more power than it's designed to handle.
Is it bad to leave my MacBook plugged in overnight?
No. Modern MacBooks have battery management features that stop charging at 100 percent and keep the battery topped up without overcharging. Leaving it plugged in overnight occasionally won't damage the battery. However, if you regularly keep your MacBook at 100 percent for extended periods, the battery will age slightly faster over years. If you want to maximize battery lifespan, unplug it once it reaches full charge.
Why does my MacBook charge slower than it used to?
The most common reasons are that you're using a lower-wattage charger than the original, the battery is older and has degraded, or you're running demanding applications while charging. Check the wattage your charger is delivering by holding Option and clicking the battery icon. If it's much lower than expected, try restarting your MacBook or closing resource-heavy applications.
Does it matter if I charge to 100 percent or stop at 80 percent?
Stopping at 80 percent extends battery lifespan slightly, because lithium batteries degrade faster when held at full charge. MacBooks have an optional "Optimized Battery Charging" feature in System Settings that automatically stops charging at 80 percent during overnight charging. If you use your MacBook daily and need the full battery, charging to 100 percent is fine — the difference in lifespan is small.