How to Convert BigInt to Number type in Typescript?

In this blog post, I will give several examples for Converting BigInt type to numeric types - Float, Integer, Hexa, Octal, Binary.

Es10 introduced bigint new data type that stores arbitrary-precision numbers. It can store values greater than 2 power 53 -1
Numbers are numeric data of Number datatype, store the data up to 2 power 53-1.

How to Convert BigInt to Number in Javascript?

There are the following different ways we can convert BigInt to numeric values.

• number constructor
• parseInt method

Convert BigInt to Number using typescript Number constructor

Number constructor accepts object type and returns number data.

Syntax:

Number(Object);
or;
new Number(object);

the constructor takes BigInt data and returns numbers.

Following is an example for parse BigInt to a number.

const bigIntValue = BigInt(147);
const bigIntValue1 = BigInt(24n);

const number = Number(bigIntValue);
const number1 = Number(bigIntValue1);

console.log(typeof bigIntValue1); // bigint
console.log(typeof number1); // number
console.log(typeof bigIntValue); //bigint
console.log(typeof number); //number

console.log(bigIntValue); // 147n
console.log(bigIntValue1); // 24n
console.log(number); // 147
console.log(number1); // 24

Convert BigInt to Number using typescript use parseInt method

parseInt() method parses and object returns numeric value.
Syntax

parseInt(object, base);

return and parameters
The object is the actual data to convert to numeric value base is 2-binary, 8-octal 16-hex types. if the base is omitted, It checks object starts with 0x treat as Hexa conversion, stars with 0 as an octal conversion if starts other than the above, treat as a decimal value

const bigIntValue = BigInt(7);
const bigIntValue1 = BigInt(4n);

const number = parseInt(bigIntValue);
const number1 = parseInt(bigIntValue1);

console.log(typeof bigIntValue1); // bigint
console.log(typeof number1); // number
console.log(typeof bigIntValue); //bigint
console.log(typeof number); //number

console.log(bigIntValue); // 7n
console.log(bigIntValue1); // 4n
console.log(number); // 7
console.log(number1); // 4

The same above works in typescript.

Conclusion

To summarize, Learn how to Convert bigint to number in multiple using the Number constructor and parseInt method.