One-eighth is a fraction that represents one part of a whole that is divided into eight equal sections. In numerical form, it is written as 1/8. This fraction is commonly used in various contexts, such as cooking, where ingredients may need to be measured in eighths, or in dividing items among a group. In decimal form, one-eighth is equivalent to 0.125. It can also be expressed as a percentage, which is 12.5%. Understanding one-eighth is useful in everyday situations, such as when sharing food or calculating portions, making it a practical concept in daily life.