1. What is Attack Bonus in D&D 5e?

The attack bonus in Dungeons & Dragons 5th Edition represents your character's skill and effectiveness when making weapon attacks or spell attacks. It's added to your d20 roll when attempting to hit a target.

2. How Attack Bonus is Calculated

The standard attack bonus formula is:

Where:

• Proficiency Bonus - Based on character level (from +2 to +6)
• Ability Modifier - Depends on the attack type (Strength for melee, Dexterity for ranged/finesse, Spellcasting ability for spells)
• Item Bonuses - From magical weapons or other equipment (+1, +2, +3 weapons, etc.)

Example: A 5th-level fighter (+3 proficiency) with 16 Strength (+3 modifier) using a +1 longsword would have: 3 (proficiency) + 3 (Strength) + 1 (magic weapon) = +7 attack bonus.

3. Importance of Attack Bonus

Details: A higher attack bonus means you're more likely to hit enemies, especially those with high Armor Class (AC). It's a key factor in determining combat effectiveness.

4. Using the Calculator

Tips:

• Proficiency bonus is based on character level (see D&D rules for exact values)
• Ability modifier is calculated as (Ability Score - 10) / 2, rounded down
• Item bonuses include any magical enhancements to weapons

5. Frequently Asked Questions (FAQ)

Q1: Does attack bonus apply to damage rolls?
A: No, attack bonus only applies to the attack roll (d20). Damage rolls use just the ability modifier and any relevant bonuses.

Q2: How do I know my proficiency bonus?
A: It's based on total character level, not class level. At levels 1-4 it's +2, 5-8 +3, 9-12 +4, 13-16 +5, and 17-20 +6.

Q3: What if I'm not proficient with the weapon?
A: You don't add your proficiency bonus to the attack roll.

Q4: Do spell attacks use the same formula?
A: Yes, but the ability modifier comes from your spellcasting ability (Intelligence for wizards, Wisdom for clerics, etc.).

Q5: Can attack bonus be negative?
A: Yes, if your ability modifier is negative and you have no proficiency or item bonuses.