Odds Calculator
"It's 1% — will 100 tries do it?" Works for box opens and monster kills alike.
Official Nexon Box Rates
Random box rates Nexon has published for Global MapleStory Classic World. Click an item to load its rate into the calculator.
Mystery Fashion Crate
| Item | Rate |
|---|---|
| Starred Hunting Hat | 2% |
| Black Blazer | 1% |
| Blue Frill Blouse | 2% |
| Blue Bell Dress | 2% |
| Black Suit Pants | 1% |
| Frameless Glasses | 1% |
| Gentleman's Mustache | 1% |
| Black Dress Shoes | 2.5% |
| Cute Mouse Ears | 1% |
| Superstar Hoodie | 1% |
| Black "Hit Me" Shirt | 1.5% |
| Black Classic Sneakers | 2.5% |
| Green Camping Hat | 3% |
| Green Camping Shirt | 3% |
| Green Camping Shorts | 3% |
| Camping Boots | 3% |
| Ragged Top | 1% |
| Torn-up Jeans | 1% |
| Crusader T-Shirt | 2.5% |
| Black Cardigan Set | 2.5% |
| Heart Balloon | 1% |
| Puffy Brown Hat | 2.5% |
| Orange Hooded Vest | 2.5% |
| Plastic Slingshot | 2% |
| White Beanie | 2.5% |
| White Casual Suit | 2.5% |
| Faded Bell-Bottom Jeans | 2.5% |
| Washed Jeans | 2.5% |
| Race Ace Cap | 1% |
| Race Ace Suit | 2.5% |
| Race Queen Uniform | 2.5% |
| Race Queen Boots | 2.5% |
| Detective Hat | 2.5% |
| Premium Trenchcoat | 2.5% |
| Wild Pants | 2.5% |
| Brown Dress Shoes | 2.5% |
| Beige Checkered Hat | 2.5% |
| Kitty Camping Hat | 2.5% |
| Brown Casual Look | 2.5% |
| Orange Hard-Rimmed Glasses | 1% |
| Michael Wings | 1% |
| Silver Earrings | 1% |
| Stylish Pink Cotton Cap | 1% |
| Cherry Layered T | 2.5% |
| Buddy Overall Jeans (Blue) | 2% |
| Buddy Overall Jeans (Red) | 2% |
| Denim Wrinkled Skirt | 2.5% |
| Green Overall | 2% |
| Velcro High Tops | 2.5% |
| Toy Rifle | 1% |
Sources: Nexon notice (Mystery Fashion Crate)
Halloween Mystery Fashion Crate
| Item | Rate |
|---|---|
| Tiger Mask | 2% |
| Prisoner Top | 2% |
| Prisoner Pants | 2% |
| Brown Bandage | 2% |
| Scream Mask | 3% |
| Skull T-Shirt | 2% |
| Bone Buckled Slacks | 3% |
| Skull Beanie | 3% |
| Dark Suit | 3% |
| Dark Enamel Suit | 3% |
| Black Leather Boots | 3% |
| Black Bandage | 2% |
| Skull Patch | 1% |
| Grey Skull Overall | 2.5% |
| Red Skull Overall | 2.5% |
| Skull Gloves | 2% |
| Black Coat of Death | 2% |
| Ghost Suit | 2% |
| Black Shoes of Death | 3% |
| Hat of Death | 2% |
| Ragged Gomushin | 2% |
| Witch Hat | 2% |
| Ghost Costume | 3% |
| Witch Clothes | 2% |
| Witch's Broomstick | 1% |
| Gargoyle Wings | 1% |
| Battle Scar | 1% |
| Mummy Hat | 2% |
| Mummy Suit | 2% |
| Mummy Mask | 2% |
| White Bandage | 2% |
| Devil Wings | 1% |
| Blue Chinese Undead Hat | 2% |
| Blue Chinese Undead Costume | 2% |
| Maple-Stein Head | 2% |
| Maple-Stein Face | 2% |
| Demon Goblin | 1% |
| Pumpkin Hat | 2% |
| Pumpkin Headgear | 2% |
| Pumpkin Suit | 2% |
| Glowing Pumpkin Basket | 2% |
| Evil Skull | 1% |
| Cat Soul | 1% |
| Devilish Horns | 2% |
| Devil Horns | 2% |
| Dark Devil Hat | 2% |
| Coffin of Gloom | 2% |
| Count Dracula Cape | 1% |
| Iljimae Mask | 2% |
| Stealth Suit | 2% |
Founder's Mystery Fashion Crate
| Item | Rate |
|---|---|
| Angel Halo | 1% |
| Toga | 1% |
| Baby Angel Wings | 1% |
| Angel Wand | 1% |
| Cherub's Bow | 1% |
| Blue Cap | 2% |
| Orange Baseball Jacket | 2.5% |
| Rainbow Knit | 2.5% |
| Ripped Jeans | 2.5% |
| Orange Toy Hammer | 1% |
| Blue Bucket Hat | 2.5% |
| Tourist T | 2.5% |
| White Jeans | 2.5% |
| Black Sunglasses | 1% |
| Cat Hat | 2.5% |
| Cat Suit | 2.5% |
| Gold Kitty Slippers | 2.5% |
| Kitty Chat Ring | 2.5% |
| Meshcap | 2.5% |
| Pink Allstar | 2.5% |
| Jean Shorts | 2.5% |
| Beret | 2.5% |
| Red Sailor Shirt | 2.5% |
| Red Sailor Skirt | 2.5% |
| Black Enamel Shoes | 2.5% |
| Patissier Hat | 3% |
| Patissier Uniform | 3% |
| Yellow Spatula | 1% |
| Bunny Ears | 1% |
| Bunny Earmuffs | 1% |
| Orange Mushroom Balloon | 1% |
| Blue Watch | 2.5% |
| Red Trainer Jacket | 2.5% |
| Red Trainer Pants | 2.5% |
| Yellow Rainbow Sneaks | 2.5% |
| Dollish Pink | 1% |
| Purple Dorothy Dress | 2.5% |
| Sailor Hat | 2% |
| Sailor Outfit | 2% |
| White Ribboned Sailor Dress | 2% |
| Slime T-Shirt | 1% |
| Slime Slippers | 1% |
| Slime Earrings | 1% |
| Reggae Hat | 2.5% |
| Orange Hooded Shirt | 2.5% |
| White Hooded Vest | 2.5% |
| Butterfly Skirt | 2.5% |
| Beetle Long Sleeve | 2.5% |
| Lined Hip-Hop Pants | 2.5% |
| White Label Ring | 1% |
Aurora Mystery Fashion Crate
| Item | Rate |
|---|---|
| White Choco Bunny | 1.5% |
| Splash Choco Boy | 2.5% |
| Splash Choco Girl | 2.5% |
| Cacao Bear Shoes | 2.5% |
| Chocolate Ribbon | 2.5% |
| Soft Chocolate Fondue Scepter | 1.5% |
| Choco Candy Cookie | 2% |
| Black Cat Beanie | 5% |
| Sky Blue Cat Beanie | 5% |
| Orange Cat Beanie | 5% |
| Heart Sunglasses | 5% |
| Red Check Rider | 5% |
| Violet Dot Jeans | 5% |
| Pink Bunny Sweater | 5% |
| Hearts Tights | 5% |
| Pink Elephant Slippers | 5% |
| Loose Fit Sweater | 4.5% |
| Stocking Shorts | 4.5% |
| Detective Glass | 2% |
| Blank Eye Patch | 2% |
| Heartbreaker Lips | 2% |
| Starlight Heart Scepter | 2% |
| Ink-and-Wash Thought Bubble Ring | 5.75% |
| Ink-and-Wash Painting Name Tag Ring | 5.75% |
| Chocolate Label Ring | 5.75% |
| Chocolate Chat Ring | 5.75% |
Signature Style Collection
| Item | Rate |
|---|---|
| Frieren Outfit Set Coupon | 1.5% |
| Frieren Outfit Set (Ringlets) Coupon | 1.5% |
| Frieren Outfit Set (Sleep) Coupon | 1.5% |
| Himmel Outfit Set Coupon | 2.5% |
| Fern Outfit Set Coupon | 7% |
| Übel Outfit Set Coupon | 8% |
| Stark Outfit Set Coupon | 8% |
| Aura Outfit Set Coupon | 20% |
| Linie Outfit Set Coupon | 20% |
| Lügner Outfit Set Coupon | 30% |
Male Hair Styles
| Item | Rate |
|---|---|
| Bed Head Hair | 16.67% |
| Prince Cut Hair | 16.67% |
| Short Regent Cut | 16.67% |
| Dreamcatcher | 16.67% |
| Metrosexual Hair | 16.67% |
| Antagonist | 16.67% |
Female Hair Styles
| Item | Rate |
|---|---|
| Lovely Ladyhawk | 16.67% |
| Ponytail-to-the-Side | 16.67% |
| Vivacious Wavy Hair | 16.67% |
| Angelica Hair | 16.67% |
| Caspia Hair | 16.67% |
| Rose | 16.67% |
Male Face Styles
| Item | Rate |
|---|---|
| Innocent Gaze | 16.67% |
| Distant Gaze | 16.67% |
| Rebel's Fire | 16.67% |
| Worrisome Glare | 16.67% |
| Alert Face | 16.67% |
| Overjoyed Smile | 16.67% |
Female Face Styles
| Item | Rate |
|---|---|
| Prim Face | 16.67% |
| Posh Look | 16.67% |
| Bulbous-Eyed Face | 16.67% |
| Round Eyed Face | 16.67% |
| Beauty Stare | 16.67% |
| Strong Stare | 16.67% |
Male Hair Styles Upcoming rates
The below rates and rewards will take effect on Wednesday, October 28 at 8:00 AM UTC. Please note that the displayed percentages are rounded, and the total sum of all rates may not add up to exactly 100%.
| Item | Rate |
|---|---|
| Angelcakes Hair | 16.67% |
| Super Tuft Hair | 16.67% |
| Wild Tangles Hair | 16.67% |
| Natural | 16.67% |
| Casanova | 16.67% |
| Roving Rockstar | 16.67% |
Female Hair Styles Upcoming rates
The below rates and rewards will take effect on Wednesday, October 28 at 8:00 AM UTC. Please note that the displayed percentages are rounded, and the total sum of all rates may not add up to exactly 100%.
| Item | Rate |
|---|---|
| Fluffy Pigtails | 16.67% |
| Romantic Braid Hair | 16.67% |
| Grace Hair | 16.67% |
| Onna's Honor | 16.67% |
| Francesca | 16.67% |
| Cecelia Twist | 16.67% |
Male Face Styles Upcoming rates
The below rates and rewards will take effect on Wednesday, October 28 at 8:00 AM UTC. Please note that the displayed percentages are rounded, and the total sum of all rates may not add up to exactly 100%.
| Item | Rate |
|---|---|
| Crystal Face | 16.67% |
| Puppy Eyes Face | 16.67% |
| Curious Dog | 16.67% |
| Dramatic Face | 16.67% |
| Ghostface Stare | 16.67% |
| Sad Innocence | 16.67% |
Female Face Styles Upcoming rates
The below rates and rewards will take effect on Wednesday, October 28 at 8:00 AM UTC. Please note that the displayed percentages are rounded, and the total sum of all rates may not add up to exactly 100%.
| Item | Rate |
|---|---|
| Tender Love | 16.67% |
| Pure Gaze | 16.67% |
| Bright Eyes | 16.67% |
| Existentially Tired Face | 16.67% |
| Lazy Look | 16.67% |
| Innocent Look | 16.67% |
Copied from Nexon's official rate notices. Per Nexon, displayed percentages are rounded and may not sum to exactly 100%. · nexon.com · Data updated: 2026-10-28
Monster Drop Rates
Nexon's official rates page lists random box rates only, with no monster drop rates, so we only add drop rates with a confirmed source.
Click a row to load it into the calculator.
| Monster | Item | Rate | Source | Note |
|---|---|---|---|---|
| No sourced drop rates yet. Monster drop lists are on the database sites in the directory. | ||||
Data updated: 2026-10-28
How it works
- Chance of at least one = 1 − (1 − p)ⁿ
- Expected drops = n × p
- Kills needed for chance c = ⌈ ln(1 − c) / ln(1 − p) ⌉