The monster size is determined by the basic size and variable limit width set for each quest.
Basic size % × fluctuation value % (within fluctuation limit range)
The basic size is set for each quest, and is expressed in % inside.
This is multiplied by the randomly determined variation value % (varying up and down around 100), and the resulting % multiplied by the size of the monster at 100% determines the size.
The variation table is first selected from one of the following seven types.
| Fluctuation Range | Chance | |
|---|---|---|
| Table 1 | 75％～79％ | 1/32 |
| Table 2 | 80％～84％ | 1/32 |
| Table 3 | 85％～94％ | 2/32 |
| Table 4 | 95％～105％ | 19/32 |
| Table 5 | 106％～115％ | 6/32 |
| Table 6 | 116％～120％ | 2/32 |
| Table 7 | 121％～125％ | 1/32 |
Once a variation table is selected, the variation values within that table are randomly determined.
However, a variation limit range is set in the quest data, which is modified to fall within the following range
(One of the following five types. Which limit width depends on the quest)
| Pattern | Width Limit |
|---|---|
| 0 | 100％ Fixed |
| 1 | 100％～105％ |
| 2 | 95％～110％ |
| 3 | 87％～118％ |
| 4 | 80％～125％ |
It may be +10% or -10% depending on some conditions. Those conditions are unknown. (Continuous hunting, good time of day? Come on big guy!)
Size Chart
| Base | Big | King | Small | Major quests with King Size | |
|---|---|---|---|---|---|
| Velocidrome | 738.4 | 841.8 | 908.2 | 664.6 | ★５Breeding Season ≪Jungle Survey≫Two Blue Shadows |
| Gendrome | 732.1 | 827.3 | 900.5 | 658.9 | ★５Cold Season ≪Desert Survey≫The Leaping Desert Hunter |
| Iodrome | 774.6 | 875.3 | 1053.5 | 697.1 | ★５Warm Season ≪Swamp Survey≫Commander of the Red Pack |
| Yian Kut-Ku | 919.8 | 1048.6 | 1122.2 | 827.8 | ★５Warm Season ≪Swamp Survey≫Intense Twins |
| Gypceros | 1013.7 | 1196.2 | 1267.1 | 942.7 | ★５Warm Season ≪Jungle Survey≫Poison Storm |
| Rathian | 1645.6 | 1941.8 | 2122.8 | 1530.4 | ★６Cold Season ≪Jungle Survey≫The Beautiful People |
| Rathalos | 1629.4 | 1857.5 | 2069.3 | 1466.5 | ★７Breeding Season ≪Tower Survey≫The Wyvern's Roost |
| Khezu | 873.2 | 1030.4 | 1178.8 | 812.1 | ★６Cold Season ≪Swamp Survey≫Red and White |
| Basarios | 1297.6 | 1531.2 | 1673.9 | 1206.8 | ★５Warm Season ≪Volcano Survey≫The Rock Trap |
| Gravios | 2099.9 | 2582.9 | 2834.9 | 2036.9 | ★７Breeding Season ≪Swamp Survey≫Two Best Threats |
| Monoblos | 2004.2 | 2324.9 | 2545.3 | 1984.2 | ☆３Cold Season ≪Hunter Quest：Desert≫Raging White Horn |
| Diablos | 1993.4 | 2451.9 | 2770.8 | 1933.6 | ★７Breeding Season ≪Desert Survey≫Four Horns |
| Cephadrome | 1538.3 | 1815.2 | 1876.7 | 1430.6 | ★６Cold Season ≪Desert Survey≫The Sand Swimming Wyvern |
| Plesioth | 2315.2 | 2847.7 | 3102.4 | 2245.7 | ★７Warm Season ≪Jungle Survey≫Big Catch |
| Daimyo Hermitaur | 1044.0 | 1148.4 | 1284.1 | 918.7 | ★６Breeding Season ≪Desert Survey≫Fortress in the Sands |
| Shogun Ceanataur | 863.0 | 983.8 | 1035.6 | 811.2 | ★７Cold Season ≪Volcano Survey≫Four Scythes |
| Bulldrome | 566.0 | 735.8 | 1188.6 | 554.7 | ★５Warm Season ≪Snowy Mountain Survey≫Frigid Hunting |
| Congalala | 984.0 | 1131.6 | 1230.0 | 954.5 | ★６Cold Season ≪Jungle Survey≫The Pink Beast's Territory |
| Blangonga | 860.0 | 1075.0 | 1186.8 | 851.4 | ★７Breeding Season ≪Snowy Mountain Survey≫The Snowy Mountains' Family |
| Rajang | 960.0 | 1200.0 | 1344.4 | 1008.4 | ★８ ≪Volcano Survey≫The Golden Lion |
| Yian Garuga | 1290.0 | 1483.5 | 1560.9 | 1173.9 | ？ |
| Kirin | 464.3 | 603.6 | 821.8 | 450.4 | ★８ ≪Elder Dragon Quest：Tower≫Lightning atop the Tower |
| Kushala Daora | 1577.0 | 1734.7 | 1892.4 | 1435.1 | ★８ ≪Dundorma Defense≫Kushala! |
| Chameleos | 1744.0 | 2092.8 | 2459.0 | 1674.2 | ★８ ≪Elder Dragon Quest：Forest and Hills≫Silently Stalking Dragon |
| Teostra | 1740.0 | 2001.0 | 2105.4 | 1583.4 | ★８ ≪Elder Dragon Quest：Volcano≫The Flaming King |
| Lunastra | 1740.0 | 1914.0 | 2175.0 | 1531.2 | ☆４ ≪Hunter's Elder Dragon：Tower≫Flame Goddess' Tower |
| Hypnoc | 1208.0 | 1389.2 | 1461.7 | 1099.3 | ？ |
| White Hypnoc | 1308.0 | 1504.2 | 1582.7 | 1190.3 | ？ |
| Tigrex | 1735.3 | 2065.0 | 2134.4 | 1561.8 | ？ |
| Volganos | 2431.2 | 2968.2 | 3233.7 | 2340.8 | ？ |
| Espinas | 1673.8 | 1908.1 | 2125.7 | 1506.4 | ？ |
| Akura Vashimu | 2008.7 | 2310.0 | 2490.8 | 1807.8 | ？ |
| Akura Jebia | 2008.7 | 2540.0 | 2738.8 | 1987.8 | ？ |
| Pariapuria | 2009.4 | 2310.8 | 2491.7 | 1808.5 | ？ |
| Berukyurosu | 1543.0 | 1774.5 | 1913.3 | 1388.7 | ★７≪Frontier Quest≫Heavenly Thunder |
| Kamu Orugaron | 980.0 | 1078.8 | 1176.0 | 891.8 | ？ |
| Nono Orugaron | 920.0 | 1012.0 | 1104.0 | 837.2 | ？ |
| Dyuragaua | 1388.0 | ？ | |||
| Doragyurosu | 1467.0 | ？ | |||
| Gurenzeburu | 1858.0 | ？ | |||
| Rukodiora | 1687.0 | ？ | |||
| Unknown | 1974.20 | ？ | |||
| Gogomoa | 1072.00 | ？ | |||
| Kokomoa | 327.00 | ？ | |||
| Abiorugu | 1645.60 | ？ |