Windshield Sizes: Typical Dimensions, Measuring and Part Numbers
There is no standard windshield size: each one is made for one body shape. This page gives typical ranges by vehicle type, shows how to measure your own glass for a sunshade, tint film or cover, and explains how replacement windshields are actually matched.
Windshields are made to fit one specific vehicle, but most passenger-car windshields measure roughly 55-65 in (140-165 cm) wide across the bottom edge and 30-40 in (76-102 cm) tall along the glass, an area of about 0.9-1.6 m² (9-17 sq ft). Replacements are matched by part number (NAGS or OEM), not by measurement.
- Typical width
- 55-65 in (140-165 cm)
- Typical height
- 30-40 in (76-102 cm)
- Glass thickness
- about 4.5-5.5 mm
- Typical area
- 0.9-1.6 m²
On this page
Typical windshield dimensions by vehicle type
The ranges below are approximate, measured along the glass surface: width across the bottom edge (the widest point on most cars) and height up the center line. Use them for planning; measure your own windshield for anything that has to fit.
| Vehicle type | Width (bottom edge) | Height (center, along glass) | Approx. area |
|---|---|---|---|
| Small and compact cars | 53-58 in (135-147 cm) | 30-34 in (76-86 cm) | 0.9-1.15 m² (9-12 sq ft) |
| Midsize sedans | 56-61 in (142-155 cm) | 32-36 in (81-91 cm) | 1.0-1.3 m² (11-14 sq ft) |
| Compact and midsize SUVs | 57-63 in (145-160 cm) | 34-39 in (86-99 cm) | 1.05-1.45 m² (11-15 sq ft) |
| Minivans and large SUVs | 60-66 in (152-168 cm) | 36-42 in (91-107 cm) | 1.2-1.6 m² (13-17 sq ft) |
| Full-size pickups | 60-66 in (152-168 cm) | 32-38 in (81-97 cm) | 1.05-1.45 m² (11-16 sq ft) |
Windshields are trapezoids with curved edges, so the area is less than width × height: roughly 85-90% of the bounding rectangle, which is how the areas above are calculated. Pickup windshields are wide but more upright, so they are shorter along the glass than those on cars and crossovers of similar width.
How to measure a windshield
Measure on the outside, with a flexible tape that follows the curve. A straight rigid rule across the glass reads short.
- Width: measure along the bottom edge from the left A-pillar trim to the right, just above the cowl. This is the widest dimension on almost every car.
- Top width: measure along the top edge below the headliner trim. Note it if you are cutting tint film or ordering a cover, because the shape tapers.
- Height: measure up the center from the cowl to the top edge, following the curve.
- Mirror cutout: measure from the top edge down to the bottom of the mirror and sensor housing. Sunshades and tint strips have to fit around it.
- For a sunshade: measure on the inside, from pillar trim to pillar trim at the dashboard, and from the dash to the headliner at the center. Inside dimensions are 1-3 in smaller than outside ones.
Modern windshields are steeply raked, so the length along the glass is much greater than the vertical rise. Height along the glass = vertical rise ÷ sin(angle from horizontal). A windshield that rises 16 in vertically at 28° from horizontal is 16 ÷ 0.469 = 34 in long along its surface.
How replacement windshields are matched
Glass shops do not order a windshield by its dimensions. They identify it by vehicle and options, then by part number.
- NAGS number: the US industry catalog. Windshields start with DW (domestic) or FW (foreign), such as DW01234 or FW05678, followed by suffix letters for features. Two windshields for the same car can differ only in their suffix.
- OEM part number: the carmaker's number, sometimes printed in the glass logo (the "bug") in a lower corner.
- VIN lookup: the most reliable way to identify which options your car has.
Options that change the part, even on the same model and year:
| Feature | What to look for |
|---|---|
| Camera or sensor bracket | A black housing behind the mirror for lane-keeping or emergency braking. The camera must be recalibrated after replacement. |
| Rain and light sensor | A gel pad behind the mirror area |
| Head-up display (HUD) | A special wedge-shaped interlayer that prevents double images |
| Heated glass or wiper park area | Fine wires in the glass, or a heated strip at the bottom |
| Acoustic interlayer | Marked "acoustic" or with an ear symbol in the logo |
| Solar or infrared-reflective coating | Often a dotted area around the toll tag spot |
| Shade band | A tinted strip across the top |
Windshield glass: thickness and construction
Every road car windshield in the US, Canada and Europe is laminated: two layers of glass bonded to a plastic interlayer, so that broken glass stays attached.
| Layer | Thickness |
|---|---|
| Outer glass | about 2.1 mm (1.6-2.5 mm) |
| PVB interlayer | 0.76 mm (thicker for acoustic and HUD glass) |
| Inner glass | about 2.1 mm (1.6-2.1 mm) |
| Total | about 4.5-5.5 mm (0.18-0.22 in) |
In the US, windshield glass must meet FMVSS 205, which adopts the ANSI/SAE Z26.1 standard. Approved windshield glass is marked AS-1 in the logo, meaning it transmits at least 70% of visible light and is suitable anywhere in the windshield. Side windows are usually tempered rather than laminated and marked AS-2 or AS-3.
Windshield tint: how much is allowed
- AS-1 line: most windshields have a small "AS-1" mark on each side near the top. Federal rules and most states allow non-reflective tint only above this line.
- Top strip: where no AS-1 line is marked, many states allow a strip at the top, commonly 4-6 in (10-15 cm) deep. Some allow clear UV or infrared film over the whole windshield; others do not.
- Medical exemptions exist in many states. Rules change, so check your state's current tint law before applying film.
Tint film for a windshield strip is usually sold in 6-12 in deep rolls, wide enough for the top edge (55-65 in on most vehicles).
Repair or replace: chip and crack size limits
Repair is governed by the ROLAGS standard (Repair of Laminated Automotive Glass Standard), and each shop and insurer sets its own limits within it. As a practical guide:
Usually repairable
- Chips and bullseyes up to about 1 in (25 mm) across, the size of a US quarter (0.96 in)
- Short cracks up to about 6 in (15 cm), and longer single cracks at some specialist shops
- Damage in the outer glass layer only
Usually needs replacement
- Damage in the driver's primary viewing area that would leave a visible distortion
- Cracks reaching the edge of the glass
- Damage over a camera or sensor area
- Damage through both glass layers
A small chip can spread into a long crack after a temperature change or a pothole, so repair it promptly.
Buses, RVs and heavy trucks
Large vehicles use the same AS-1 glass rules but much bigger and often flatter panels. Class 8 trucks use either a one-piece curved windshield or a two-piece split windshield, each specific to the cab model. Motorhomes and buses frequently use two-piece windshields because a single panel would be too large to make and replace economically.
Wiper length depends on windshield size: see the wiper blade size chart. Overall vehicle sizes are in the car dimensions guide, and if you are fitting a roof box, check that its front clears the windshield top using the roof rack guide.
Frequently asked questions
Will a windshield from one model fit another?
Almost never across different models, even similar-sized ones such as a Chevrolet Equinox and a Subaru Outback. Each windshield matches its own body opening, curvature and mounting. Within one model and generation, the glass usually fits, but options change the part number.
Are F-250 and F-350 windshields the same?
Within the same generation, Ford F-250 and F-350 Super Duty trucks share the same cab, so they use the same windshield shape. Different years can fall in different generations, and options such as a rain sensor, heated wiper park area or camera bracket change the exact part. Match the part number, not just the model.
What is the average windshield size in feet?
A typical car or crossover windshield is about 4.6-5.4 ft wide and 2.5-3.3 ft tall measured along the glass, for an area of roughly 9-17 sq ft (0.9-1.6 m²). Compact cars sit at the low end and large SUVs, vans and pickups at the high end.
What does DW or FW mean on a windshield part number?
These are NAGS (National Auto Glass Specifications) prefixes used by US glass shops. DW is a domestic windshield and FW a foreign windshield, followed by a number and often letters for options (for example tint band, rain sensor or acoustic interlayer). The number identifies the glass shape and features, not its size.
How heavy is a car windshield?
About 22-40 lb (10-18 kg) for a typical passenger car or SUV. Laminated glass about 5 mm thick weighs roughly 11 kg per square meter, so the weight scales with the area.
How many different windshield sizes are there?
Thousands. Every body style and generation has its own windshield, and option variants multiply that, which is why glass catalogs such as NAGS list thousands of separate windshield part numbers.