MacBook vs. iMac / all-in-one computer: running cost
A MacBook is cheaper to run: about $10 a year versus $25 for an iMac / all-in-one computer at typical use and 17.99¢/kWh, a $15 difference.
| MacBook | iMac / all-in-one computer | |
|---|---|---|
| Typical watts | 25 W | 60 W |
| Watt range | 10–140 W | 30–180 W |
| Typical use | 6 hours a day | 6 hours a day |
| Energy per year | 57 kWh | 138 kWh |
| Cost per hour | 0.4¢ | 1.1¢ |
| Cost per day | 2.8¢ | 6.8¢ |
| Cost per month | $0.85 | $2.07 |
| Cost per year | $10 | $25 |
| Per year in Hawaii (43.51¢) | $25 | $60 |
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What drives the difference
- MacBook: Apple-silicon MacBooks are very efficient: a MacBook Air averages about 10-20 W from the wall during normal work and charging.
- iMac / all-in-one computer: All-in-ones combine computer and display; Apple-silicon iMacs draw about 30-60 W in normal use, older 27-inch Intel iMacs 100-180 W.
Ways to cut either cost
Efficient compact charger with low standby draw.
See options on AmazonUses 5-15 W for similar work if you already own an efficient monitor.
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Frequently asked questions
Which costs more to run, a MacBook or an iMac / all-in-one computer?
At typical use and the U.S. average rate (17.99¢/kWh), an iMac / all-in-one computer costs about $25 a year versus $10 for a MacBook. That's $15 more, or 2.4× as much.
How many watts do MacBook and iMac / all-in-one computer use?
A MacBook typically draws 25 W (range 10–140 W). An iMac / all-in-one computer draws 60 W (range 30–180 W). Watts alone don't decide cost. Hours of use, cycling and standby matter just as much.
Rates: EIA, 12 months ending 2026-07. Methodology.