Free · Mass conversions

Avoirdupois Ounces to Kilograms Conversion Calculator

Convert avoirdupois ounces to kilograms with editable results and a clear worked example.

  • Formula & worked example
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Calculator inputs

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How to use this calculator

  1. Enter the known values in the units shown. Results update as you type.
  2. Edit a calculated value to solve backwards, or lock a value to hold it fixed.
  3. Use the worked example to check the method. Reset restores the starting fields.

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Formula and method

1 oz = 0.028349523125 kg. This is the common avoirdupois ounce, equal to one sixteenth of a pound. A troy ounce used for precious metals has a different mass. Enter a known value in the units shown; editing a result solves the conversion in reverse.

1 oz = 0.028349523125 kg

Worked example

Enter these known values and leave the other values blank.

Weight in ounces
1 oz
Weight in kilograms
0.02835 kg
Weight in other units
0.0625 lb

Assumptions and limitations

  • This is the common avoirdupois ounce, equal to one sixteenth of a pound. A troy ounce used for precious metals has a different mass.
  • The worked example uses the starting units. A unit selection preserves the quantity, so check the unit before entering a new number.

Common questions

Which mass convention does this conversion use?

This is the common avoirdupois ounce, equal to one sixteenth of a pound. A troy ounce used for precious metals has a different mass.

How should I use a rounded result?

Keep enough digits for the accuracy of the original measurement. Display rounding changes the visible precision, while the calculation retains additional digits.

References

The calculation equations, inverse formulas, units, and input rules were imported from this source. Bookify provides the interface and equation solver.

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