Benchmark: Compare the ways to convert String to Number in JS

Script Preparation code:

const minimum = 1
const maximum = 1000
var arr = Array.from({ length: 1000000 }, () => Math.floor(Math.random() * (maximum - minimum + 1)) + minimum)

Tests:

Number
return arr.map((el) => Number(el))
parseInt
return arr.map((el) => parseInt(el))
>>0
return arr.map((el) => el >> 0)
*1
return arr.map((el) => el * 1)
~~
return arr.map((el) => ~~el)
+
return arr.map((el) => +el)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Number
parseInt
>>0
*1
~~
+

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 6 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:120.0) Gecko/20100101 Firefox/120.0

Browser/OS: Firefox 120 on Mac OS X 10.15

View result in a separate tab

Test name	Executions per second
Number	96.9 Ops/sec
parseInt	135.7 Ops/sec
>>0	184.3 Ops/sec
*1	188.8 Ops/sec
~~	186.5 Ops/sec
+	189.2 Ops/sec

Compare the ways to convert String to Number in JS (version: 0)

Compare the most popular ways to convert string to number

Comparing performance of: Number vs parseInt vs >>0 vs *1 vs ~~ vs +

Created: 6 months ago by: Guest

Jump to the latest result

Number

parseInt

>>0

*1

~~

+

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A