King-Size Bed Dimensions

Before you begin shopping for a new king-size bed, come armed with numbers. You'll definitely want comprehensive bedroom measurements when shopping for a king-size bed. While king mattresses and frames come in standard sizes, there are some distinctions to king beds you should know about. This guide to king-size bed dimensions answers many frequently asked questions about king-size beds with comparisons to other bed sizes.

A standard king-size bed, also known as an Eastern king bed, measures 76" wide by 80" long. A king-size bed is the largest standard bed size, measuring one full size larger than a queen-size bed. While king-size beds are difficult to move and may only fit in some bedrooms depending on your room and furniture size, they are the perfect choice for couples looking to maximize individual sleeping space.

Measuring 4" wider than a California king-size bed and 16" wider than a queen-size bed, a standard king-size bed is the widest standard bed size available.

While king-size bed frames share the same range of measurements as king bed dimensions at 76" x 80", they can vary in overall size due to the frame's thickness, material, and design. Make sure to account for the extra inches of your bed frame when shopping for a king-size bed.

King-size mattresses can have measurements 2" to 3" different than the standard king-size bed dimensions of 76" x 80". Like king bed frames, king mattress dimensions will depend on their material and design. Concerning mattress depth, king-size mattresses usually measure 10" to 16" thick.

While standard king-size headboards measure approximately 79" to 81" wide, non-standard king-size headboards are often a little wider. King-size headboards generally range from 48" to 64" high.

California king beds are slightly narrower than standard king beds. A typical king bed measures 76" across, while a California King measures 72" wide. If you and your partner move around in your sleep, you should opt for a typical king bed. If you and your partner are tall, you may prefer the extra four inches of legroom that a California King provides.

Standard king and California king beds do not use the same bedding. Although you can find standard king-size bedding almost anywhere, it's more difficult to find California king bedding. When purchasing a new California king bed, it is wise to buy bedding from the retailer simultaneously.