CODEWITHSUNDEEP
node.jshex
mentinet
mentinet

Reputation: 784

NodeJS - Convert hexadecimal to float

That may sound like a weird struggle and actually easy to do, but I cannot find a working way to convert an hexidecimal in a string format into a float.

My exemple is for instance: 406ea716

If I convert it using one of the following website, I get 3.728948.

http://www.h-schmidt.net/FloatConverter/IEEE754.html http://gregstoll.dyndns.org/~gregstoll/floattohex/

I tried every single piece of code I found on the internet, but it won't return the same result.

Does it exist a module in NodeJS to perform the same conversion? If not, what can I do?

Thank you for your help.

Upvotes: 5

Views: 4097

Answers (3)

Rolland Saf
Rolland Saf

Reputation: 91

I had the same issue. try this.

Buffer('406ea716','hex').readFloatBE(0)

3.7289481163024902

Upvotes: 8

Rich Apodaca
Rich Apodaca

Reputation: 29014

Have you tried parseInt?

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/parseInt

$ node
> parseInt('406ea716', 16)
1080993558

Upvotes: 0

Tudor Constantin
Tudor Constantin

Reputation: 26871

No need for a module:

var hex = '406ea716';
// transform the hexadecimal representation in a proper js hexadecimal representation by prepending `0x` to the string
// parseInt() - because your example was an integer.
var num = parseInt( '0x' + '406ea716');
console.log( num );

Upvotes: 0

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