17.3-Inch Laptop Dimensions and Screen Size
The 17.3-inch laptop is the largest common size, bought as a desktop replacement or a gaming machine. Its dimensions matter most when you need to carry it, so the bag and airline limits are covered below along with the model specs.
A 17.3-inch laptop measures about 15.5–15.8 × 10.2–11.6 in (39.4–40.1 × 25.8–29.3 cm), 0.8–1.1 in (2.1–2.9 cm) thick, and weighs 4.5–6.8 lb (2.05–3.1 kg). Its 16:9 screen is 15.1 × 8.5 in (38.3 × 21.5 cm), with a 43.9 cm diagonal.
- Body width
- 39.4–40.1 cm
- Body depth
- 25.8–29.3 cm
- Screen W × H
- 38.3 × 21.5 cm
- Weight
- 2.05–3.1 kg
On this page
17.3-inch laptop dimensions in inches and cm
| Measurement | Inches | Centimeters |
|---|---|---|
| Screen diagonal | 17.3 in | 43.9 cm |
| Screen width × height (16:9) | 15.1 × 8.5 in | 38.3 × 21.5 cm |
| Body width | 15.5–15.8 in | 39.4–40.1 cm |
| Body depth | 10.2–11.6 in | 25.8–29.3 cm |
| Thickness | 0.8–1.1 in | 2.1–2.9 cm |
| Weight (no charger) | 4.5–6.8 lb | 2.05–3.1 kg |
The width is fixed by the screen: a 38.3 cm panel plus hinges and bezels leaves almost no variation, so every 17.3-inch model below is within 7 mm of 40 cm wide. Depth is where models differ: about 26 cm for office models and 26 to 29 cm for gaming models with large rear vents.
Dimensions of 17-inch laptops by model
| Model | Screen | W × D × H (cm) | W × D × H (in) | Weight |
|---|---|---|---|---|
| HP 17 (17-cn) | 17.3 in, 16:9 | 40.1 × 25.8 × 2.1 | 15.78 × 10.15 × 0.81 | 2.05–2.08 kg 4.5 lb |
| ASUS TUF Gaming F17 (2023) | 17.3 in, 16:9 | 39.4 × 26.4 × 2.3–2.5 | 15.51 × 10.39 × 0.90–1.0 | 2.6 kg 5.7 lb |
| MSI Katana A17 AI (2024) | 17.3 in, 16:9 | 39.8 × 27.3 × 2.5 | 15.67 × 10.75 × 0.99 | 2.7 kg 6.0 lb |
| Acer Nitro 17 (AN17-42) | 17.3 in, 16:9 | 40.0 × 29.3 × 2.8–2.9 | 15.76 × 11.55 × 1.1–1.14 | 3.1 kg 6.8 lb |
| LG gram 17 (2025) | 17 in, 16:10 | 37.9 × 25.9 × 1.8 | 14.91 × 10.19 × 0.70 | 1.35–1.42 kg 3.0–3.1 lb |
| ASUS ROG Strix SCAR 18 (2025) | 18 in, 16:10 | 39.9 × 29.8 × 2.35–3.2 | 15.71 × 11.73 × 0.93–1.26 | 3.3 kg 7.3 lb |
The LG gram 17 shows how much a design can shed: it is 2 cm narrower than a 17.3-inch laptop and less than half the weight of a 17.3-inch gaming model. It gives up the dedicated graphics card and the cooling that make the gaming models heavy.
17.3-inch screen size and resolution
The 17.3-inch panel is a 16:9 screen measuring 38.3 × 21.5 cm (15.1 × 8.5 in), an area of 128 sq in (824 cm²). That is 23% more than a 15.6-inch laptop screen and 11% more than a 16-inch 16:10 screen, all of the extra going into width.
| Resolution | Name | Pixel density | Found on |
|---|---|---|---|
| 1600 × 900 | HD+ | 106 ppi | Entry-level office models |
| 1920 × 1080 | Full HD | 127 ppi | Most mid-range and many gaming models |
| 2560 × 1440 | QHD | 170 ppi | Higher-end gaming models |
| 3840 × 2160 | 4K UHD | 255 ppi | A few workstations |
At 127 ppi, a full HD 17.3-inch screen is the least sharp of the common laptop sizes. Text looks softer than on a 14-inch full HD laptop (157 ppi). If you read a lot of text on it, a QHD panel at 170 ppi closes most of the gap.
17.3 vs 17 vs 18 inches
Three screen sizes now compete at the top of the range, and they are not interchangeable for bags or desks.
| Size | Ratio | Screen W × H (cm) | Screen area | Typical body depth |
|---|---|---|---|---|
| 17 in | 16:10 | 36.6 × 22.9 | 130 sq in | about 26 cm |
| 17.3 in | 16:9 | 38.3 × 21.5 | 128 sq in | 25.8–29.3 cm |
| 18 in | 16:10 | 38.8 × 24.2 | 146 sq in | about 29–30 cm |
A 17-inch 16:10 screen has slightly more area than a 17.3-inch 16:9 one, in a narrower body. The 18-inch size, now used by many high-end gaming laptops, is about as wide as a 17.3-inch laptop but 3 to 4 cm deeper, so it may not fit a bag made for 17.3-inch models. The 16-inch size is the step down; see the 16-inch laptop dimensions page, or compare all sizes in the laptop size chart.
Carrying a 17-inch laptop: bags and airline limits
Many laptop backpacks are built for 15.6-inch laptops, which are 4 cm narrower. A 17.3-inch laptop needs a compartment of at least 41 × 27 cm (16.1 × 10.6 in) inside for an office model, and up to 41 × 30.5 cm (16.1 × 12 in) for a deep gaming model. Look for bags labeled 17 or 17.3 inches and confirm the interior size; the laptop bag size guide has the full chart.
Because the laptop alone is more than 10 in (25.4 cm) deep, a bag that holds it can exceed the tightest airline personal-item limits. Limits below are as published in 2026; airlines change them, so confirm before you fly.
| Airline | Personal item limit | 17.3-inch laptop bag |
|---|---|---|
| United | 17 × 10 × 9 in (43 × 25 × 22 cm) | No: the laptop is deeper than the 10 in side |
| Southwest | 16.25 × 13.5 × 8 in | Tight: a 15.8 in laptop leaves under 0.5 in for the bag |
| JetBlue | 17 × 13 × 8 in | Usually, in a slim bag |
| Frontier | 18 × 14 × 8 in | Usually, in a slim bag |
If the laptop must travel in a personal item on a strict airline, carry it in a slim sleeve inside a standard carry-on instead; a 22 × 14 × 9 in (56 × 36 × 23 cm) carry-on, the common US limit, takes a 17.3-inch laptop easily. The carry-on bag size guide lists limits by airline.
A 17.3-inch gaming laptop at 2.6 to 3.1 kg plus a power brick of 0.5 to 1 kg puts 3 to 4 kg in your bag before anything else. For a laptop that rarely leaves the house that is fine; for daily carrying, a 14 or 16-inch laptop with an external monitor at home is the lighter combination.
Desk space for a 17.3-inch laptop
- Footprint: 40 × 26–29 cm closed. Open, the lid stands 26 to 29 cm tall.
- Depth needed: about 50 cm (20 in) including wrist space in front and the tilted lid behind. Most desks are 60 cm (24 in) deep or more.
- Width needed: 40 cm for the laptop plus about 25 cm for a mouse, so at least 65 cm (26 in).
- Ventilation: gaming models exhaust heat from the back and sides. Leave several centimeters clear behind the hinge rather than pushing the laptop against a wall.
Frequently asked questions
A laptop measures 39.5 × 27 cm. Is it a 17.3-inch?
Almost certainly. Every 17.3-inch laptop is about 39.4 to 40.1 cm wide, and 27 cm is a typical depth for a gaming model. A 16-inch laptop is at most about 36.5 cm wide, and an 18-inch gaming laptop is closer to 30 cm deep.
Can a 17-inch laptop fit in a bag that is 43 × 32 × 13 cm?
Yes, if those are inside dimensions and the laptop compartment uses them. A 17.3-inch laptop needs about 41 cm of length and 27 to 30 cm of depth, so 43 × 32 cm leaves room. If 43 × 32 × 13 cm are outside measurements, padding can take 2 to 3 cm, so check the compartment size.
How heavy is a 17-inch laptop?
Between 2 and 3.1 kg (4.5 and 6.8 lb) for 17.3-inch models, before the charger. Light 17-inch 16:10 models such as the LG gram 17 weigh about 1.4 kg. Gaming models add a power brick of 0.5 to 1 kg.
What resolution is a 17.3-inch laptop screen?
Budget models use 1600 × 900 (106 ppi) or 1920 × 1080 (127 ppi). Gaming models offer 2560 × 1440 (170 ppi), and a few have 3840 × 2160 (255 ppi).
Is a 17-inch laptop 17 inches wide?
No. The 17 or 17.3 in is the screen's diagonal. The screen is 15.1 in wide and the laptop about 15.5 to 15.8 in (39.4 to 40.1 cm) wide.