How many cups is one medium spring onion?

One medium spring onion is 0.15 cups. The conversion scales in a straight line, so 2 spring onions is 0.3 cups and 3 spring onions is 0.45 cups. Multiply or divide that figure to match whatever your recipe needs, or use the converter above for an exact reading at any amount.

How many grams is one medium spring onion?

One medium spring onion weighs about 15 grams. A small one is about 10 grams and a large one about 25 grams, so set the size selector to match what you actually have. The converter above and the chart below cover all sizes and units for any amount.

Convert Spring Onion from Whole Spring onions

Spring Onion converter

Use the tool below to convert spring onion from Whole Spring onions to the measurement that you need.

Spring onion size ranges from a slim 10 g stalk to a plump 25 g one (2.5 times the weight). Setting the size below keeps three spring onions consistent whether you have spindly salad onions or fat bunching onions.

How much is one medium spring onion?

One medium spring onion is 0.15 cups, about 15 grams. 2 spring onions is 0.3 cups and 3 spring onions is 0.45 cups. Use the converter below for any amount.

Out of spring onion? See spring onion substitutes →

Need a stronger onion flavour? Standard onions (70–150 g) are larger with bold, layered sweetness. See onions in items.

Shallots (20–60 g) are more delicate than spring onions and better suited to dressings and pan sauces. See shallots in items.

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

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Spring onion sizeSize applies to whole spring onions (small / medium / large).

Result

0.15 cups

Common Spring Onion conversions

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

spring onions	Cups (chopped)
1 spring onion	0.15 cups
2 spring onions	0.3 cups
3 spring onions	0.45 cups
4 spring onions	0.6 cups
5 spring onions	0.75 cups
6 spring onions	0.9 cups

Spring Onion conversion chart

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

spring onions	cups	cups (US)	g	oz	lb	kg
1 spring onion	0.15 cups	0.16 cups (US)	15 g	0.53 oz	0.03 lb	0.02 kg
2 spring onions	0.3 cups	0.31 cups (US)	30 g	1.06 oz	0.07 lb	0.03 kg
3 spring onions	0.45 cups	0.47 cups (US)	45 g	1.59 oz	0.1 lb	0.05 kg
4 spring onions	0.6 cups	0.63 cups (US)	60 g	2.12 oz	0.13 lb	0.06 kg
5 spring onions	0.75 cups	0.78 cups (US)	75 g	2.65 oz	0.17 lb	0.08 kg

Spring Onion 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 spring onion varieties compare.

Variety	Best for
Scallion (green onion)	All-purpose use raw or cooked: mild, crisp, and fresh; the standard supermarket spring onion.
Welsh onion (negi)	Stir-fries and cooked dishes: more pungent and heat-tolerant than common scallions.
Bunching onion	Asian dishes and pickling: slightly bulbous base, bold flavour, very versatile.

Which should I pick?

For most recipes (stir-fries, salads, soups, and garnishes) a standard scallion (green onion) is the default: mild, fresh, and edible from root to tip. Welsh onions are more pungent and hold up better to heat; use them when you want stronger flavour in cooked dishes. Bunching onions have a slightly bulbous base and bolder flavour: the everyday choice in many Asian cuisines.

Frequently Asked Questions

How much is one medium spring onion?: One medium spring onion is 0.15 cups, or 15 grams. The ratio is fixed, so 2 spring onions is 0.3 cups and 3 spring onions is 0.45 cups. Use the converter above for any amount, or the chart below for the most common quantities. Open the spring onion converter
How many cups is one medium spring onion?: One medium spring onion is 0.15 cups. The conversion scales in a straight line, so 2 spring onions is 0.3 cups and 3 spring onions is 0.45 cups. Multiply or divide that figure to match whatever your recipe needs, or use the converter above for an exact reading at any amount.
How many grams is one medium spring onion?: One medium spring onion weighs about 15 grams. A small one is about 10 grams and a large one about 25 grams, so set the size selector to match what you actually have. The converter above and the chart below cover all sizes and units for any amount.

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