Shadowrun 3rd Edition Toolkit

SR3 Magic + Ranged Combat Calculator

A single-file JavaScript webpage for quick table-side estimates. Plug in your dice, target numbers, armor, dodge, spell resistance, and drain to get a fast expected result using SR3-style Rule of Six math.

Ranged Combat Inputs

Attack dice, target number modifiers, dodge, armor, hardened armor, and soak.

Attack Test

Firearms Skill Dice

Combat Pool Committed

Base Target Number

Range Modifier

Visibility Modifier

Recoil Modifier

Movement Modifier

Cover Modifier

Wound Modifier

Other Modifier

Weapon + Damage

Weapon Power

Base Damage Level

Ammo Power Modifier

Ammo Armor Modifier

Defense + Soak

Defense Mode

Dodge Dice

Dodge TN

Body

Ballistic / Impact Armor

Hardened Armor

Combat Pool to Soak

Ranged Output

Expected-value estimate, not a literal roll simulation.

Attack Dice

Final Attack TN

Expected Attack Successes

Expected Dodge Successes

Expected Net Successes

Staged Damage Before Soak

Modified Power

Effective Armor

Soak Dice

Soak TN

Expected Soak Successes

Estimated Final Damage

Magic Inputs

Built for quick combat spell and drain estimates, with a practical direct-versus-physical mode.

Casting

Spell Type

Sorcery Dice

Spell Pool Committed

Casting TN

Force

Base Damage Level

Target Resistance

Target Resistance Dice

Target Resistance TN

Target Body

Target Armor

Drain

Drain Damage Level

Drain TN

Willpower

Spell Pool to Resist Drain

Magic Output

Fast estimate of spell effect and drain.

Casting Dice

Expected Casting Successes

Resistance Dice

Resistance TN

Expected Resistance Successes

Expected Net Successes

Estimated Spell Damage

Drain Resistance Dice

Expected Drain Resistance Successes

Estimated Final Drain

This is a practical single-file JavaScript page, so you can save it and run it offline. It is designed for quick table use rather than exhaustive automation of every SR3 edge case.