Convert Spring Onion from Whole Spring onions to Cups (chopped)

Spring Onion converter

Convert whole spring onions to cups below. One medium spring onion is about 0.15 cups, and 2 spring onions make roughly 0.3 cups.

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 many cups is a spring onion?

One medium spring onion gives about 0.15 cups of spring onion when chopped, so 2 spring onions come to roughly 0.3 cups. A small spring onion is about 0.1 cups and a large one about 0.25 cups, so set the size selector to match what you have.

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 what one medium onion is in cups.

Shallots (20–60 g) are more delicate than spring onions and better suited to dressings and pan sauces. See what one medium shallot is in cups.

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

Size 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 onionsCups (chopped)
1 spring onion0.15 cups
2 spring onions0.3 cups
3 spring onions0.45 cups
4 spring onions0.6 cups
5 spring onions0.75 cups
6 spring onions0.9 cups

For the reverse conversion, see how many spring onions are in a cup.

Spring Onion conversion chart

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

spring onionscupscups (US)gozlbkg
1 spring onion0.15 cups0.16 cups (US)15 g0.53 oz0.03 lb0.02 kg
2 spring onions0.3 cups0.31 cups (US)30 g1.06 oz0.07 lb0.03 kg
3 spring onions0.45 cups0.47 cups (US)45 g1.59 oz0.1 lb0.05 kg
4 spring onions0.6 cups0.63 cups (US)60 g2.12 oz0.13 lb0.06 kg
5 spring onions0.75 cups0.78 cups (US)75 g2.65 oz0.17 lb0.08 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.

VarietyBest 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 onionAsian 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 many cups is one medium spring onion?
One medium spring onion (about 15 g) gives roughly 0.15 cups of chopped flesh. A small one (around 10 g) yields about 0.1 cups and a large one (around 25 g) about 0.25 cups, so set the size selector to match the spring onions you actually have before you trust the figure. Open spring onion converter
How much does a medium spring onion weigh?
A medium spring onion weighs about 15 g, with a small one around 10 g and a large one near 25 g. That range changes the weight of any recipe that counts spring onions by the piece, so set the size selector to match what you actually have before trusting a cup or gram figure.
How much does an average spring onion weigh?
An average spring onion is the same as a medium one: about 15 g. A small spring onion is lighter at around 10 g and a large one heavier at about 25 g, so the size you actually have changes the total for any recipe that counts spring onions by the piece rather than by weight.
Which spring onion variety should I use?
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.
How much does a large spring onion weigh?
A large spring onion weighs about 25 g, noticeably more than a medium, or average, one at 15 g or a small one at 10 g. Set the size selector to large to convert cups, grams and ounces for the bigger spring onions you actually have on the counter.

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