Pick your state and vehicle type, set the film shade and your factory glass, and see whether each window is street legal.
The calculator checks front door windows, rear door windows and back glass for cars and for SUVs, trucks and vans, and shows the windshield rule as information only.
VLT means visible light transmission: the percentage of light that passes through the window. A lower number is darker. A 35% film lets 35% of the light through.
Most state limits apply to the finished window, which is the film and the factory glass together. Factory glass is not perfectly clear, usually about 70% to 75% VLT. To find the combined value, multiply the two: 35% film on 70% glass is 0.35 x 0.70 = 24.5% combined.
Some states, such as Oregon and California, also set a minimum for the film itself. A few states allow a small measuring tolerance, which the calculator applies and tells you about when it makes the difference.
Alaska, Arizona, California, Idaho, Montana, Nevada, Oregon, Texas, Washington.
Laws last verified October 2026.
With typical 70% factory glass, yes, but only just. 35% film on 70% glass is about 24.5% combined, right at Washington's 24% minimum for front doors, rear doors and back glass. Washington allows no measuring tolerance, so factory glass darker than 70% can put it under the limit.
Usually not. 25% film on 70% glass is about 17.5% combined, which is below the 24% minimum. Darker film on the front door windows does not pass on any vehicle type.
Many states, including Washington, allow darker tint behind the driver on SUVs, trucks and vans but not on cars. Vehicle type follows how the manufacturer classifies it, which is on the label inside the driver door.
Not with tinted film. Every state this calculator covers allows tint only on a strip at the top. Washington does allow clear UV film on the whole windshield, and a medical exemption can allow more. The calculator shows your state's windshield rule as information only.
No. It gives general guidance based on state statutes as last verified in October 2026. Always confirm with local authorities for the most current rules.