Wiper Blade Size Calculator
Calculate optimal wiper blade sizes based on windshield dimensions and wiper arm positions.
Common Wiper Blade Sizes
| Size | mm | Common Use |
|---|---|---|
| 12" | 305mm | Rear wiper |
| 14" | 355mm | Rear, small cars |
| 16" | 405mm | Compact passenger |
| 18" | 455mm | Passenger side |
| 20" | 505mm | Common passenger |
| 22" | 560mm | Common driver |
| 24" | 610mm | Trucks, SUVs |
| 26" | 660mm | Large vehicles |
| 28" | 710mm | Max size |
Wiper Blade Selection Tips
Blade Types
- Conventional: Metal frame, affordable, may ice up
- Beam: No frame, better pressure, aerodynamic
- Hybrid: Frame with aerodynamic shell, good all-around
- Winter: Rubber boot protects from ice buildup
Replacement Signs
- Streaking or smearing on windshield
- Squeaking or chattering noise
- Skipping across the glass
- Visible cracks or tears in rubber
- Replace every 6-12 months for best visibility
Pro Tip: Driver side is often 1-2" longer than passenger to maximize the driver's field of view. Never exceed manufacturer max sizes or blades may collide or hit the windshield frame.