How do I convert ounces to kg for any ingredient?

Converting ounces to kg is pure weight maths that applies to any food, not just mushroom, so 1 ounce is always 0.03 kg. For other amounts, or to add kilograms and stone, the weight converter at the link below handles grams, ounces and pounds in both directions.

Convert Mushroom from Ounces to Kilograms

Mushroom converter

Use the tool below to convert mushroom from Ounces to Kilograms.

A small white-button mushroom is barely over a third the weight of a large one, so 'eight mushrooms' in a sauce can swing the yield. Pick the right size below to keep risotto, pasta, and stroganoff on target. Sizes here cover white buttons only; portobello caps run much larger and aren't included.

How many kg is an ounce of mushrooms?

An ounce of mushrooms is 0.03 kg. This is a pure weight conversion, the same for any food, so the ratio never changes with size or density. Use the converter above for any amount, or the weight converter linked below to add kilograms and stone.

Got portobello caps? Those weigh 80–200 g whole, well above white button. See our Portobello Mushroom converter.

Enter an amount, pick your units, and set the size for counting whole mushrooms.

Convert from

Convert to

Mushroom sizeSize applies to whole mushrooms (small / medium / large).

Result

0.03 kg

Common Mushroom conversions

Quick reference for mushroom at medium size. Switch the size in the converter above for small or large.

Ounces	Kilograms
1 oz	0.03 kg
2 oz	0.06 kg
4 oz	0.11 kg
8 oz	0.23 kg
16 oz	0.45 kg
32 oz	0.91 kg

Mushroom conversion chart

The chart below shows how whole mushrooms (medium size) convert to cups, grams and ounces.

oz	kg	mushrooms	cups	cups (US)	g	lb
4 oz	0.11 kg	6.3 mushrooms	1.55 cups	1.62 cups (US)	113.4 g	0.25 lb
8 oz	0.23 kg	12.6 mushrooms	3.11 cups	3.24 cups (US)	226.8 g	0.5 lb
16 oz	0.45 kg	25.2 mushrooms	6.21 cups	6.48 cups (US)	453.59 g	1 lb
24 oz	0.68 kg	37.8 mushrooms	9.32 cups	9.72 cups (US)	680.39 g	1.5 lb
32 oz	0.91 kg	50.4 mushrooms	12.43 cups	12.96 cups (US)	907.18 g	2 lb

Mushroom varieties and best uses

The conversions above are the same whatever variety you use; the difference is what each is good for. Here is how the common mushroom varieties compare.

Variety	Best for
White Button	Everyday sautéing, soups, and pizza: mild and tender, the standard supermarket mushroom.
Cremini (Baby Bella)	All-purpose cooking: brown-skinned, firmer, meatier white-mushroom variety with deeper flavour. Sold as Cremini, Baby Bella, or Portobellini.
Shiitake	Asian dishes and stocks: woody stems, strong umami; sold fresh or dried.
Oyster	Quick sautés and stir-fries: delicate, fan-shaped caps that cook in minutes.
Chestnut	Roasting and risotto: nutty brown caps, firmer than white button, similar to cremini.
Porcini	Risotto, sauces, and stews: deeply savoury; usually sold dried and rehydrated.

Which should I pick?

For everyday sautéing, pasta, and risotto, Cremini (Baby Bella) gives deeper, meatier flavour than White Button. No Cremini? White Button is the reliable supermarket default. For stocks and stir-fries that want strong umami, reach for Shiitake; for tender quick sautés where you don't want the mushroom to overpower, Oyster.

Frequently Asked Questions

How many kg is an ounce of mushrooms?: An ounce of mushrooms is 0.03 kg. This is a straight weight conversion, so half (0.5 ounces) is 0.01 kg and double (2 ounces) is 0.06 kg. The ratio never changes with mushroom size or density, so the same figure works for any quantity you measure. Open the mushroom converter
How do I convert ounces to kg for any ingredient?: Converting ounces to kg is pure weight maths that applies to any food, not just mushroom, so 1 ounce is always 0.03 kg. For other amounts, or to add kilograms and stone, the weight converter at the link below handles grams, ounces and pounds in both directions. Ounces to kg converter
Which mushroom variety should I use?: For everyday sautéing, pasta, and risotto, Cremini (Baby Bella) gives deeper, meatier flavour than White Button. No Cremini? White Button is the reliable supermarket default. For stocks and stir-fries that want strong umami, reach for Shiitake; for tender quick sautés where you don't want the mushroom to overpower, Oyster.

Other produce

Convert another fruit or vegetable: