* Check your owner's manual: This is the best place to start. The manual should specify the correct wiper blade sizes.
* Measure your existing wiper blades: Carefully measure the length of your current wiper blades. This is the easiest but least reliable method as the existing blades may not be the original size.
* Look up your vehicle online: Many auto parts websites (like AutoZone, Advance Auto Parts, or RockAuto) allow you to select your vehicle's year, make, and model to find compatible wiper blades. They'll often list multiple sizes, so double-check your measurements if you used the previous method.
Once you know the correct length(s), you can purchase replacement wiper blades at most auto parts stores, online retailers, or even some larger grocery stores. Be sure to specify the length(s) when purchasing. You might also consider the type of wiper blade (conventional, beam, hybrid) – but the length is the most critical factor for proper fit.