Free · Mass conversions

Kilograms, Ordinary Ounces & Troy Ounces Conversion Calculator

Convert kilograms, ordinary ounces & troy ounces with editable results and an explained example.

  • Formula & worked example
  • Private in your browser
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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.

Private by default

Inputs and results stay in this browser tab. Bookify does not upload or store the values you enter.

Formula and method

0.45359237 kg = 16 ordinary ounces = 1 pound. Ordinary avoirdupois ounces and troy ounces have different masses. One pound contains sixteen ordinary ounces; a troy ounce is exactly 31.1034768 grams.

0.45359237 kg = 16 ordinary ounces = 1 pound

Worked example

Enter these known values and leave the other values blank.

Kilograms
0.45359237 kg
Ounces
16 oz
Troy ounces
14.583 oz t
Pounds and ounces
1:0 lb / oz
More units
1 lb

Assumptions and limitations

  • Ordinary avoirdupois ounces and troy ounces have different masses. One pound contains sixteen ordinary ounces; a troy ounce is exactly 31.1034768 grams.
  • A unit change preserves the quantity. Select the desired unit before entering a new measurement.

Common questions

Which mass definition does this tool use?

Ordinary avoirdupois ounces and troy ounces have different masses. One pound contains sixteen ordinary ounces; a troy ounce is exactly 31.1034768 grams.

Can I solve the conversion in reverse?

Enter the known quantity in its selected unit and leave the unknown quantity blank. Results retain extra precision internally and are rounded for display.

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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