## Conversion formula

The conversion factor from pounds to kilograms is 0.45359237, which means that 1 pound is equal to 0.45359237 kilograms:

1 lb = 0.45359237 kg

To convert 397 pounds into kilograms we have to multiply 397 by the conversion factor in order to get the mass amount from pounds to kilograms. We can also form a simple proportion to calculate the result:

1 lb → 0.45359237 kg

397 lb → M(kg)

Solve the above proportion to obtain the mass M in kilograms:

M(kg) = 397 lb × 0.45359237 kg

M(kg) = 180.07617089 kg

The final result is:

397 lb → 180.07617089 kg

We conclude that 397 pounds is equivalent to 180.07617089 kilograms:

397 pounds = 180.07617089 kilograms

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 kilogram is equal to 0.0055532055965964 × 397 pounds.

Another way is saying that 397 pounds is equal to 1 ÷ 0.0055532055965964 kilograms.

## Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that three hundred ninety-seven pounds is approximately one hundred eighty point zero seven six kilograms:

397 lb ≅ 180.076 kg

An alternative is also that one kilogram is approximately zero point zero zero six times three hundred ninety-seven pounds.

## Conversion table

### pounds to kilograms chart

For quick reference purposes, below is the conversion table you can use to convert from pounds to kilograms

pounds (lb) kilograms (kg)
398 pounds 180.53 kilograms
399 pounds 180.983 kilograms
400 pounds 181.437 kilograms
401 pounds 181.891 kilograms
402 pounds 182.344 kilograms
403 pounds 182.798 kilograms
404 pounds 183.251 kilograms
405 pounds 183.705 kilograms
406 pounds 184.159 kilograms
407 pounds 184.612 kilograms