Conversion formula

The conversion factor from pounds to ounces is 16, which means that 1 pound is equal to 16 ounces:

1 lb = 16 oz

To convert 640 pounds into ounces we have to multiply 640 by the conversion factor in order to get the mass amount from pounds to ounces. We can also form a simple proportion to calculate the result:

1 lb → 16 oz

640 lb → M_(oz)

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

M_(oz) = 640 lb × 16 oz

M_(oz) = 10240 oz

The final result is:

640 lb → 10240 oz

We conclude that 640 pounds is equivalent to 10240 ounces:

640 pounds = 10240 ounces

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 ounce is equal to 9.765625E-5 × 640 pounds.

Another way is saying that 640 pounds is equal to 1 ÷ 9.765625E-5 ounces.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that six hundred forty pounds is approximately ten thousand two hundred forty ounces:

640 lb ≅ 10240 oz

An alternative is also that one ounce is approximately zero times six hundred forty pounds.

Conversion table

pounds to ounces chart

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