Unit to unit

Ounces (weight) to kilograms converter

4 ounces (weight) is equal to 0.11 kilograms. Both units measure mass, so the conversion is exact for the selected measurement system.

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4 ounces (weight) is equal to

0.11

kilograms

Unit conversion using the selected measurement definitions.

More precision: 0.1134 kilograms.

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Volume depends on the ingredient and the measuring method. Results crossing weight and volume are recipe estimates.

Ounces (weight) to kilograms table

US customary definitions. Values rounded to four decimals.

Ounces (weight) to kilograms, US customary definitions
Ounces (weight)	Kilograms
0.5 oz	0.0142
1 oz	0.0283
2 oz	0.0567
4 oz	0.1134
8 oz	0.2268
12 oz	0.3402
16 oz	0.4536

Formula. kilograms = ounces (weight) × 0.0283. Example: 4 oz → 0.1134 kilograms.

How to convert ounces (weight) to kilograms

Both units measure mass, so no ingredient is involved. The converter turns your input into a shared base unit (grams) and divides by the target unit's factor. One ounce (weight) is 28.3495 grams; one kilogram is 1,000 grams.

The full factors are kept until the final display is rounded. Use the "more precision" line on the result card when you need more decimals, and remember that a rounded kitchen fraction is a convenience rather than an exact equivalent.

Choose the measurement your recipe means

The default cup is US customary at 236.5882365 ml. Metric and Australian cups use 250 ml. A metric tablespoon is 15 ml; an Australian tablespoon is 20 ml. Fluid ounces, pints, quarts and gallons in this interface stay US liquid units whichever cup system you select.

An ounce by weight measures mass; a fluid ounce measures volume. They are different units. If your recipe gives a dry ingredient in ounces, select "Ounces, weight (oz)" and then the ingredient for any conversion to cups. Eight US fluid ounces make a US cup, but that is not a rule for dry ounces.

Reverse: Kilograms to ounces (weight)

A few useful answers

Kitchen questions, answered.

Do I need to choose an ingredient?

Not for this pair: both units measure the same dimension. You will need an ingredient if you switch between a weight unit and a volume unit.

Can I enter a fraction?

Yes. Enter a decimal such as 0.5, a fraction such as 1/2, a mixed fraction such as 1 1/2, or a Unicode fraction such as ½. Blank, negative and zero-denominator inputs are rejected with a message.

Why does switching the cup system change the result?

US customary cups hold 236.5882365 ml. Metric and Australian cups hold 250 ml. The same amount therefore occupies a different number of cups, and Australian tablespoons (20 ml) differ from metric ones (15 ml).

Sources behind the numbers

Sources checked September 25, 2026. Ingredient values are recipe equivalents, not laboratory densities.