Run results for: Math.hypot vs Math.sqrt vs Math.sqrt&pow vs Math.sqrt&**2

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_3_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) FxiOS/137.2 Mobile/15E148 Safari/605.1.15

Browser: Mobile Safari 18

Operating system: iOS 18.3.2

Device Platform: Mobile

Date tested: one year ago

Math.sqrt > Math.pow

2K/s

Math.sqrt > **

2K/s

Math.sqrt

663/s

Math.hypot

104/s

View exact numbers

Test name	Executions per second
✓ Math.sqrt > Math.pow	1,971 Ops/sec
Math.sqrt > **	1,970 Ops/sec
Math.sqrt	663 Ops/sec
Math.hypot	104 Ops/sec

Script Preparation code:

function testHypot() {
  for (let i=0; i < 1000; i++){
    for (let j=0; j < 1000; j++) {
      Math.hypot(i - j, j - i)
    }
  }
}
function testSqrt() {
  for (let i=0; i < 1000; i++){
    for (let j=0; j < 1000; j++) {
      Math.sqrt((i-j)*(i-j)+(j-i)*(j-i))
    }
  }
}
function testSqrtPowFn() {
  for (let i=0; i < 1000; i++){
    for (let j=0; j < 1000; j++) {
      Math.sqrt(Math.pow(i-j, 2)+Math.pow(j-i, 2))
    }
  }
}
function testSqrtPowOp() {
  for (let i=0; i < 1000; i++){
    for (let j=0; j < 1000; j++) {
      Math.sqrt((i-j)**2+(j-i)**2)
    }
  }
}

Tests:

Math.hypot
testHypot()
Math.sqrt
testSqrt()
Math.sqrt > Math.pow
testSqrtPowFn()
Math.sqrt > **
testSqrtPowOp()

Run results for: Math.hypot vs Math.sqrt vs Math.sqrt&pow vs Math.sqrt&**2

Is Math.hypot actually faster than Math.sqrt?

Math.hypot

Math.sqrt

Math.sqrt > Math.pow

Math.sqrt > **