The same number or amount (of something). My exam schedule is really difficult. I have four tests in as many days.I wouldn't discount their army's force: they have 400,000 and as many guns.
1. The same number of. For example, He changed jobs four times in as many years means he changed jobs four times in four years. [c. 1400]
2. as many as. A phrase used to qualify the meaning of many as a very large number, depending on what follows it. For example, You can take as many pens as you need. [Late 1300s] Also see as ... as; as much as.