Best lightweight laptop

Weight is the most heavily weighted criterion because it is the defining characteristic of a lightweight laptop. Every gram matters when you carry a machine daily in a backpack, messenger bag or hand luggage.

The LG Gram 16 scores 10/10 at 1.19kg (1190g). Achieving this weight with a 16-inch display is an engineering feat. LG uses a magnesium alloy chassis that is inherently lighter than aluminium, though it does flex slightly under pressure. For perspective, 1190g is roughly the weight of a litre bottle of water.

The MacBook Air M3 scores 9/10 at 1.24kg (1240g). The 50g difference from the LG Gram is barely perceptible when holding both laptops, but the MacBook achieves its weight with a denser, more rigid aluminium chassis. The total carry weight including the 150g MagSafe charger is approximately 1.39kg.

The Samsung Galaxy Book3 Pro scores 8/10 at 1.17kg (1170g) for the 14-inch model, actually making it the lightest on paper. However, the thinner chassis feels less rigid and the shorter battery life means you are more likely to carry the heavier 200g USB-C charger. The Lenovo Yoga Slim 7i scores 7/10 at 1.37kg (1370g), which is still lightweight but noticeably heavier than the top two.

Battery life is rated critical because the whole point of a lightweight laptop is using it away from a desk. A light laptop with poor battery life defeats its own purpose because you end up carrying a charger that adds weight and bulk.

The MacBook Air M3 scores 10/10 with genuine 18-hour battery life under mixed workloads. This is not a manufacturer claim based on video playback loops. In real-world use combining web browsing, document editing, email and light development, 16 to 18 hours is consistently achievable. The M3 chip's unified memory architecture and efficiency cores are the primary reason for this exceptional endurance.

The LG Gram 16 scores 8/10 with approximately 14 hours. Its 80Wh battery is physically larger than the MacBook's 52.6Wh unit, but the Intel Core Ultra 7 processor draws more power, offsetting the larger capacity. The Lenovo Yoga Slim 7i scores 7/10 with 12 hours, which is respectable but means you will need a charger for a full working day. The Samsung Galaxy Book3 Pro scores 6/10 with 11 hours, the weakest in this group and a genuine limitation for travel use.

Performance per watt measures how much computing power a processor delivers relative to its energy consumption. For lightweight laptops, this metric is crucial because it determines whether you get real performance without overheating, throttling or draining the battery.

The MacBook Air M3 scores 10/10. Apple's M3 chip is built on TSMC's 3nm process, the most efficient chip fabrication available. It delivers faster single-core performance than Intel's Core i7-13700H while consuming roughly 60% less power. The M3 completes a Geekbench 6 single-core test at approximately 3050 points while the Intel chip manages approximately 2400. The efficiency gap widens further in sustained workloads where the Intel chip throttles due to heat.

The LG Gram 16 scores 7/10 with Intel's Core Ultra 7. Intel's latest architecture is more efficient than previous generations but cannot match Apple silicon. The processor draws 28W under sustained load compared to the M3's approximately 12W. The Lenovo Yoga Slim 7i scores 7/10 with similar Intel performance. The Samsung Galaxy Book3 Pro scores 6/10 with an older 13th-gen Intel chip that runs hotter and less efficiently.

The Samsung Galaxy Book3 Pro scores 9/10 with its AMOLED panel. AMOLED produces perfect blacks, infinite contrast and a wider colour gamut than any IPS panel. Colours are vibrant and the display looks exceptional for media consumption and colour-sensitive work.

The MacBook Air M3 scores 8/10 with Apple's Liquid Retina display. It covers 100% of the P3 colour space, achieves 500 nits peak brightness and has excellent colour accuracy out of the box. It is not OLED, but it is one of the best IPS panels available. The LG Gram 16 scores 8/10 with a 16-inch IPS panel at 2560x1600 resolution. The larger size is an advantage for productivity, offering more screen space for multitasking. The Lenovo Yoga Slim 7i scores 7/10 with a solid 14-inch IPS panel that covers 100% sRGB but does not reach the wider P3 colour space.

Build quality affects how a lightweight laptop holds up to daily transport in bags, how it feels during use and how long it lasts. A light laptop that flexes or creaks does not inspire confidence.

The MacBook Air M3 scores 9/10. The unibody aluminium chassis is exceptionally rigid. There is zero flex in the keyboard deck, minimal flex in the lid and the hinge mechanism is precise and smooth. The laptop feels like a single solid object. Apple's machining tolerances are among the tightest in the industry.

The LG Gram 16 scores 7/10. Despite its MIL-STD-810H certification (which tests for drops, vibration and temperature extremes), the magnesium alloy chassis does flex noticeably when you press on the keyboard deck or twist the lid. It is durable but does not feel as premium as the MacBook. The Samsung Galaxy Book3 Pro scores 7/10 with a thin aluminium chassis that is elegant but has some keyboard deck flex. The Lenovo Yoga Slim 7i scores 7/10 with a solid aluminium build that feels reliable if unremarkable.