Riot has finally given us the official drop rates of loot inside of League of Legends’ loot box system.

While players have taken it upon themselves multiple times to produce spreadsheets to try to take an unofficial guess at what the drop rates may be, these are the official numbers.

Skin Shard - 50%

Champion Shard - 25%

Emote Permanent - 10%

Ward Skin Shard + 150 Bonus Orange Essence - 11.5%

Summoner Icon Shard + 150 Bonus Orange Essence - 3.5%

There are also Bonus Drops, which have a chance to drop in addition to the things above.

Gemstone - 3.6%

Bonus Chest + Key - 10%

Riot also included these special rules for the unlucky (or too lucky):

Equal Odds: Outside of Hextech exclusive skins, all skins in the system have the same odds of dropping. Any given ultimate skin is just as likely to drop as a cheaper skin. Big Drops, Free Unlock: Ultimate and mythic skins drop as auto-redeeming permanents (no orange essence required to upgrade them). If you already own the skin, you’ll be able to disenchant them for orange essence. Bad Luck Protection: You can’t open three chests in a row without dropping at least one skin shard. This raises the effective drop rate of skin shards to roughly 57 percent. Bonus Gemstones: Gemstones have a 3.6 percent chance of dropping as a bonus alongside normal chest content. These also have light “bad luck protection,” since you can’t go more than 50 boxes without getting a gemstone. This brings the overall drop rate up to 4 percent. Chests inside Chests: Bonus chests (with a key) have a 10 percent chance to drop whenever you open a Hextech chest. Each of these chests also have a 10 percent chance to drop with another bonus chest (and key). Hextech Exclusives: Outside of redeeming Gemstones for these skins, they also have a 1 in 2,500 chance to drop alongside the normal Hextech chest content. No Cheap Champs: Hextech chests only drop shards for champions worth 4800BE or more. Sorry, Nunu fans.

That being said, you have a fairly big chance to open up a skin shard, though these rates don’t disclose the exact chances of what type of shard you’ll be getting. (You’ll have to do that math yourself, since they’re all equally weighted. Good luck!) It’s also to be noted that these rates are only for Hextech chests, and shouldn’t be taken into account for other types of loot boxes from events.