Method Shiny Rolls Shiny Chance Shiny Charm Shiny Rolls Shiny Charm Shiny Chance Extra Info Source

Gen 6 (X/Y/OR/AS)

Stationary 1 1/4096 3 1/1365.67 (1/1366 rounded) This includes all non-shiny locked legendaries that you battle, XY berry trees, ambush encounters, ORAS dexnav poochyena, kecleon, electrode, voltorb, and spiritomb 3DSRNGTool
Normal Wild Encounters 1 1/4096 3 1/1365.67 (1/1366 rounded) 3DSRNGTool
Friend Safari 5 1/819.60 (1/820 rounded) 7 1/585.57 (1/586 rounded) 3DSRNGTool
Horde Encounters 5 1/819.60 (1/820 rounded) 15 1/273.53 (1/274 rounded) Each individual pokemon has the same chance as Normal Wild, but you encounter 5 at once, giving you 5x the rolls total 3DSRNGTool
PokeRadar 1 1/(8100 - ChainLength * 200) (max 1/100) 1 1/(8100 - ChainLength * 200) (max 1/100) The chance of getting a shiny in a non shiny patch on the first use of radar are the same as Normal Wild. These are the chance of a "good patch" having shiny sparkles, not the chance of a shiny patch appearing after one radar use. Check source for more info wwwwwwzx
DexNav/Chain Fishing N/A N/A N/A N/A The shiny chance for these are more complicated, a calculator exists here
In-Game Gifts 1 1/4096 1 1/4096 This includes all pokemon that are given to you in game, starters, fossils, XY lapras, ORAS latias/latios, wynaut, togepi, beldum, castform, sharpedo, camerupt 3DSRNGTool
Masuda-less Breeding 1 1/4096 2 1/2048.25 (1/2048 rounded) 3DSRNGTool
Masuda Breeding 6 1/683.08 (1/683 rounded) 8 1/512.44 (1/512 rounded) 3DSRNGTool

Gen 7 (S/M/US/UM)

Stationary 1 1/4096 3 1/1365.67 (1/1366 rounded) This includes all non-shiny locked legendaries that you battle, SuMo Exeggutor, and USUM ditto 3DSRNGTool
Normal Wild Encounters 1 1/4096 3 1/1365.67 (1/1366 rounded) 3DSRNGTool
SOS Encounters 1 | 5 | 9 | 13 1/4096 | 1/820 | 1/456 | 1/316 3 | 7 | 11 | 15 1/1366 | 1/586 | 1/373 | 1/274 Chain length: 0-10 | 11-20 | 21-30 | >30. Note: due to SuMo storing chain length as an 8-bit integer, when you reach chain 256 it resets back to 0. This was fixed in USUM wwwwwwzx
Non-Legendary Ultra Wormholes N/A 1% | (1+d)% | (1+2d)% | 4d% N/A 1% | (1+d)% | (1+2d)% | 4d% These rates are split by wormhole rarity, where d = ((lightyear/500) - 1) but is limited to a maximum of 9 wwwwwwzx
Poke Pelago 1 1/4096 1 1/4096 3DSRNGTool
In-Game Gifts 1 1/4096 1 1/4096 This includes all pokemon that are given to you in game, starters, fossils, SuMo/USUM type: null, aerodactyl, porygon, eevee, USUM poipole, surf pikachu, and partner cap pikachu 3DSRNGTool
Masuda-less Breeding 1 1/4096 2 1/2048.25 (1/2048 rounded) 3DSRNGTool
Masuda Breeding 6 1/683.08 (1/683 rounded) 8 1/512.44 (1/512 rounded) 3DSRNGTool