Reads Per Kilobase Million Formula

**Semantic type:** Quantitative Concept

**Definition:** A formula that calculates the number of reads per million fragments sampled (calculated by dividing the fragment counts by a per million scaling factor, which is derived by taking the total fragments in the sample and dividing by 1,000,000) divided by the length of the gene, in kilobases. Fragments are represented by single end reads.

**Synonyms:** - READS PER KILOBASE MILLION FORMULA - RPKM - RPKM Formula