In India, the sex ratio is calculated as:

the number of females per thousand males

Formula is Females/Males x1000.

Sex Composition:

The number of women and men in a country is an important demographic characteristic. The ratio between the number of women and men in the population is called the Sex Ratio. In some countries it is calculated by using the formula:

(Male Population/Female Population) × 1000

or the number of males per thousand females.

In India, the sex ratio is worked out using the formula:

(Female Population/Male Population) × 1000

or the number of females per thousand males.