Round a number to a specific number of decimal places: 1.234 → 1.2

$ npm install --save round-to

const roundTo = require('round-to');

roundTo(1.234, 2);
//=> 1.23

roundTo.up(1.234, 2);
//=> 1.24

roundTo.down(1.234, 2);
//=> 1.23

Numbers are rounded to a specific number of significant figures. Specifying a negative precision will round to any number of places to the left of the decimal.

roundTo(1234.56, -2);
//=> 1200

Round the decimals with Math.round.

Round up the decimals with Math.ceil.

Round down the decimals with Math.floor.

Type: number

Type: number (integer)

Number of decimal places.

MIT © Sindre Sorhus