Run results for: round vs trunc vs floor vs parseFloat

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_1_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/131.0.6778.73 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 131

Operating system: iOS 18.1.1

Device Platform: Mobile

Date tested: one year ago

trunc

10.1M/s

round

9.7M/s

floor

9.2M/s

parseFloat to int

4.3M/s

View exact numbers

Test name	Executions per second
✓ trunc	10,067,463 Ops/sec
round	9,707,678 Ops/sec
floor	9,218,248 Ops/sec
parseFloat to int	4,260,608 Ops/sec

Tests:

trunc
Math.trunc(13.37) Math.trunc(13.67)
round
Math.round(13.37) Math.round(13.67)
floor
Math.floor(13.37) Math.floor(13.67)
parseFloat to int
parseFloat(12.17.toFixed()) parseFloat(12.97.toFixed())