What are the odds of a specific cube line in MapleStory M?

Each line has its own published chance, and it depends on the equipment part, the potential rank, and whether it is the first line or the second/third line. Select the lines you want in the table and the calculator sums them, then combines the pools to give your chance per cube.

Do Occult, Red, Black and Choice Cubes have different options?

No. Nexon states the option probabilities are identical across Occult, Red, Black and Choice Cubes — they differ only in function and in rank-up chance. Occult and Red rank up 1% of the time, Black and Choice 2%.

Why is the second line different from the first line?

Nexon publishes two separate pools per rank. The first potential line draws from one pool and the second and third lines draw from another, which is usually much larger — so a line that is common in the first slot can be rare in the others.

How many cubes does it take to rank up potential?

Rank-up is a separate roll from the options: 1% per cube for Occult and Red Cubes, 2% for Black and Choice Cubes. That is about 69 cubes for a 50% chance at 1%, or 35 cubes at 2%. There is no pity — each cube is independent.

Which parts have bonus potential?

Most equipment does, but Pendant, Ring and Pocket have no bonus potential table in Nexon's disclosure, so the calculator disables that option for them.

Cube Probabilities

Nexon's official potential and bonus potential tables, made interactive. Pick a part, rank and line pool, tap the options you actually want, and see your chance per cube — plus how many cubes it takes to get there.

On this line

0.00%

Per cube

0.00%

Cubes for 50%

—

Cubes for 90%

—

Tap the lines you want. Picks apply to both pools.

Cube setup

Equipment part

Cube type

Potential rank

Showing pool

Lines on your item

Filter options

Weapon — Legendary · 1st line

Option	Value	Chance
	6 values	12.30%
		2.05%
		2.05%
		2.05%
		2.05%
		2.05%
		2.05%
	6 values	12.30%
		2.05%
		2.05%
		2.05%
		2.05%
		2.05%
		2.05%
	6 values	10.80%
		1.80%
		1.80%
		1.80%
		1.80%
		1.80%
		1.80%
	6 values	9.90%
		1.65%
		1.65%
		1.65%
		1.65%
		1.65%
		1.65%
	6 values	9.06%
		1.51%
		1.51%
		1.51%
		1.51%
		1.51%
		1.51%
	12 values	15.36%
		1.39%
		1.39%
		1.39%
		1.39%
		1.39%
		1.39%
		1.17%
		1.17%
		1.17%
		1.17%
		1.17%
		1.17%
	12 values	14.04%
		1.27%
		1.27%
		1.27%
		1.27%
		1.27%
		1.27%
		1.07%
		1.07%
		1.07%
		1.07%
		1.07%
		1.07%
	6 values	5.88%
		0.98%
		0.98%
		0.98%
		0.98%
		0.98%
		0.98%
	5 values	5.40%
		1.08%
		1.08%
		1.08%
		1.08%
		1.08%
	6 values	4.92%
		0.82%
		0.82%
		0.82%
		0.82%
		0.82%
		0.82%

71 lines in this pool, totalling 99.96%. Nexon rounds each entry to two decimals.

Rank-up chance per cube

Occult Cube / Red Cube: 1% rank up · 69 cubes for a coin flip
Black Cube / Choice Cube: 2% rank up · 35 cubes for a coin flip

Ranking up is a separate roll from the option lines — these cubes differ only in rank-up chance and function, never in the option probabilities.

Notes

• The item's Potential Rank is set by its first potential.
• Occult, Red, Black and Choice Cubes differ only in function — the option probabilities are identical.
• Second and third potential lines roll from a different, larger pool than the first line.
• Individual probabilities are rounded to two decimal places, so a pool may not total exactly 100%.
• “Per cube” assumes the lines roll independently — Nexon does not disclose whether one line can repeat another.
• Data from Nexon official probability disclosure — Cube (Weapon).

How to use this table

Pick the part and rank
Every equipment part has its own option pool, and the pool changes completely with the potential rank. Pendant, Ring and Pocket have no bonus potential, so that option is disabled for them.
Choose potential or bonus potential
They are separate systems with separate tables and separate cubes. Bonus potential lines come from a smaller pool than regular potential.
Pick the line pool
The first potential line rolls from a different, usually smaller pool than the second and third lines. Switch pools to see each one — anything you select stays selected in both.
Select what you want and read the odds
Tap an option name to take every value of that stat, or tap a single value to target exactly that roll. The card shows your chance on the shown line, your chance per cube across the whole item, and how many cubes reach a 50% or 90% shot.

Worked example

Chasing PHY ATK 420 on a Legendary Weapon:

On the 1st line only: 2.05% per cube · 34 cubes for a coin flip
Anywhere on a 3-line item: 3.05% per cube · 23 cubes for a coin flip

Accepting the line anywhere on the item instead of demanding it in the first slot is dramatically cheaper — which is why it pays to decide up front how strict you actually need to be.

Reading the table

• Each option is a header row showing the combined chance of that stat at any value, with its individual values listed underneath.
• On this line is your chance on the pool currently shown; per cube combines the first and second/third pools across all the lines on your item.
• Selections persist when you switch pools, so you can pick the same stat in both and see the true per-cube number.

Before you spend

• Ranking up and rolling options are separate rolls. A cube that fails to rank up still rerolls your lines.
• There is no pity on either roll. Cube number 35 has the same rank-up chance as the first.
• Selecting several lines means any of them, not all of them.

More tools

Rebirth Flame probabilities →

Every flame option and its exact drop rate, with the flames needed to land the options you want.

Damage calculator →

Mob and boss damage per hit, with the level penalty, boss defense and food buffs factored in.

Guide

What are the odds of a specific cube line in MapleStory M?: Each line has its own published chance, and it depends on the equipment part, the potential rank, and whether it is the first line or the second/third line. Select the lines you want in the table and the calculator sums them, then combines the pools to give your chance per cube.
Do Occult, Red, Black and Choice Cubes have different options?: No. Nexon states the option probabilities are identical across Occult, Red, Black and Choice Cubes — they differ only in function and in rank-up chance. Occult and Red rank up 1% of the time, Black and Choice 2%.
Why is the second line different from the first line?: Nexon publishes two separate pools per rank. The first potential line draws from one pool and the second and third lines draw from another, which is usually much larger — so a line that is common in the first slot can be rare in the others.
How many cubes does it take to rank up potential?: Rank-up is a separate roll from the options: 1% per cube for Occult and Red Cubes, 2% for Black and Choice Cubes. That is about 69 cubes for a 50% chance at 1%, or 35 cubes at 2%. There is no pity — each cube is independent.
Which parts have bonus potential?: Most equipment does, but Pendant, Ring and Pocket have no bonus potential table in Nexon's disclosure, so the calculator disables that option for them.