Run results for: Math.random vs crypto.getRandom

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Brave/1 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 18

Operating system: iOS 18.5

Device Platform: Mobile

Date tested: one year ago

Math.random()

321.8M/s

crypto.getRandomValues()

3.6M/s

View exact numbers

Test name	Executions per second
✓ Math.random()	321,823,520 Ops/sec
crypto.getRandomValues()	3,624,962 Ops/sec

Tests:

Math.random()
Math.random()
crypto.getRandomValues()
crypto.getRandomValues(new Uint32Array(1))[0] / 4294967296