The height of IKEA kitchen cabinets can vary depending on the specific model and design. However, the standard height for base cabinets in IKEA's kitchen system is typically 30 inches (76.2 cm), not including the countertop. Wall cabinets, on the other hand, usually have a height of 30 or 40 inches (76.2 or 101.6 cm). It's important to note that IKEA offers various cabinet sizes and customization options, so the dimensions may vary depending on the specific product line and individual preferences.