Swing Speed Increase

Swing Speed Increase (SSI) is an item property that increases the rate at which a character uses his or her melee weapon. The rapidity of a character's attack is affected by the base speed of the weapon used, the amount of Stamina possessed, and the amount of SSI his or her items impart. Barehanded combatants swing at the fastest Weapon Base Speed possible, which is 2.5 seconds or 10 "ticks". Swing speed is never less than 1.25 seconds, or 5 ticks.

Stamina

The bonus to a character's swing speed given by Stamina is based on increments of 30, rounded down. And while the maximum Stamina possible is 250, Stamina above 240 grants no further increase in swing speed.

Caps

The maximum SSI to be found on a standard weapon is +30%. Some artifacts have higher SSI, such as the Soul Seeker and the The Berserker's Maul. SSI is occasionally found on non-weapons, such as the artifact Daimyo's Helm. A character’s total SSI is capped at 60%.

Formula

In the Five on Friday of March 9, 2007, the developer Leurocian provided the following formula for determining swing speed. The example provided was based upon a character with 50 Stamina who is swinging a Halberd with 20 SSI.

Convert the Weapon Base Speed to ticks by multiplying the speed in seconds of your weapon, which is displayed on the tooltip, by 4. Example, an unmodified Halberd has a Weapon Base Speed of 4 seconds per swing, which converts to a base speed of 16 ticks.
Determine the character’s "Stamina Ticks" by dividing the current Stamina by 30. Example, if your current Stamina is 50, then 50/30=1.666, which is rounded down. In this instance, the "Stamina Ticks" are 1.
Note the total Swing Speed Increase modifier from equipment. Example, 20.

Formula: ((Base Weapon Speed - Stamina Ticks) * (100.0 / (100 + Swing Speed Increase))) = "x" ticks

Example: ((16 - 1) * (100.0 / (100 + 20))) = 12 ticks.

When divided by 4, so as to convert ticks back into seconds, the modified Halberd speed is 3 seconds. Keep in mind that the minimum swing time can never fall below 1.25 seconds.

You can calculate your swing speed from the calculator below:

Artifacts

Weapons with more than 30% SSI and Items with SSI that normally wouldn't have it:

Animated Legs of the Insane Tinker - 10% (Platemail Leggings)
Assassin Armor Set pieces - 5% (per piece) (Leather Armor)
Breastplate of the Berserker - 10% (Gargish Platemail Chest)
Daimyo's Helm - 10% (Platemail Battle Kabuto)
Jade Armband [Replica] - 5% (Ring)
Ranger's Cloak of Augmentation - 5% (Cloak)
Soul Seeker - 60% (Radiant Scimitar)
The Berserker's Maul - 75% (Maul)
Turquoise Ring - 5% (Ring)

Imbuing

The following resources are required to imbue the highest intensity of Swing Speed Increase (30%):

Item Properties
Stat Modifiers	Dexterity Bonus • Hit Point Increase • Intelligence Bonus • Mana Increase • Stamina Increase • Strength Bonus
Regenerations	Hit Point Regeneration • Mana Regeneration • Stamina Regeneration
Hit Effects	Assassin Honed • Blood Drinker • Battle Lust • Hit Cold Area • Hit Curse • Hit Dispel • Hit Energy Area • Hit Fatigue • Hit Fire Area • Hit Fireball • Hit Harm • Hit Life Leech • Hit Lightning • Hit Lower Attack • Hit Lower Defense • Hit Mana Drain • Hit Mana Leech • Hit Physical Area • Hit Poison Area • Searing Weapon • Splintering Weapon • Hit Stamina Leech
Historic	Ruin • Force • Might • Mystic • Power • Vanquishing • Newbified
Damage Types	Physical Damage • Fire Damage • Cold Damage • Poison Damage • Energy Damage • Chaos Damage • Direct Damage
Magic	Casting Focus • Faster Casting • Faster Cast Recovery • Lower Mana Cost • Lower Reagent Cost • Mage Armor • Mage Weapon • Resonance • Spell Channeling • Spell Damage Increase • Spell Focusing • Spell Consumption
Weapon	Damage Increase • Swing Speed Increase • Use Best Weapon Skill • Weapon Speed • Hit Chance Increase
Archery	Balanced • Damage Modifier • Lower Ammo Cost • Range • Velocity
Death & Theft	Blessed • Cursed • No-Drop/No-Trade • Insured • Owned By
Damage Dealing	Damage Eater • Rage Focus • Reactive Paralyze • Reflect Physical Damage • Soul Charge
Other	Artifact Rarity • Defense Chance Increase • Durability • Elves Only • Enhance Potions • Gargoyles Only • Lifespan • Lower Requirements • Luck • Mana Burst • Mana Phase • Night Sight • Self Repair • Shard Bound • Skill Bonus • Strength Requirement • Uses Remaining • Weight
Negative	Antique • Brittle • Cursed • Ephemeral • Prized • Massive • Unwieldy • Unlucky •