Calculator
Example Data Table
| Ability | Base | Origin Bonus | Final | Modifier | Typical Use |
|---|---|---|---|---|---|
| Strength | 15 | 1 | 16 | +3 | Melee attacks and carrying |
| Dexterity | 14 | 0 | 14 | +2 | Initiative and stealth |
| Constitution | 13 | 1 | 14 | +2 | Health and endurance |
| Wisdom | 10 | 0 | 10 | +0 | Perception and insight |
Formula Used
The calculator uses the common fantasy roleplaying modifier rule.
Final Score = Base Score + Origin Bonus + Misc Bonus
Ability Modifier = floor((Final Score - 10) / 2)
Saving Throw Bonus = Ability Modifier + Proficiency Bonus, when the saving throw is proficient.
Skill Bonus = Related Ability Modifier + Training Multiplier × Proficiency Bonus.
Training multiplier is 0 for none, 0.5 for half proficiency, 1 for proficiency, and 2 for expertise.
Spell Save DC = 8 + Proficiency Bonus + Primary Ability Modifier.
Spell Attack Bonus = Proficiency Bonus + Primary Ability Modifier.
Carrying Capacity = Strength Score × 15 × Carry Multiplier.
How To Use This Calculator
Enter a character name and level first.
Choose the score generation method you used.
Type each base ability score in its field.
Add origin, race, feat, item, or custom bonuses.
Check saving throw proficiency boxes for trained saves.
Select training for each skill.
Choose your primary ability for spell or class DC values.
Press the calculate button.
The result appears above the form and below the header.
Use the CSV button for spreadsheet data.
Use the PDF button for a printable summary.
Ability Score Planning Guide
What This Tool Does
This calculator helps players plan a complete fantasy character build. It accepts all six core ability scores. It then adds origin bonuses, custom adjustments, and level based proficiency. The final table shows each score, modifier, saving throw, cost, and rating. This makes early character planning much easier.
Why Ability Scores Matter
Ability scores affect nearly every important roll. Strength helps melee attacks, grapples, jumps, and carrying limits. Dexterity improves initiative, stealth, armor defense, and ranged attacks. Constitution supports survival, endurance, and concentration checks. Intelligence helps knowledge, investigation, and certain magical builds. Wisdom supports awareness, insight, survival, and many saving throws. Charisma powers social scenes and several spellcasting classes.
Using Point Buy
Point buy gives a controlled way to build balanced heroes. The calculator uses the standard 8 to 15 point cost scale. Higher starting values cost more points. Scores outside that range are marked as unavailable. This prevents confusing totals during custom builds. A remaining budget value helps you see unused points quickly.
Modifiers And Saves
Modifiers are more important than raw scores during play. A score of 10 gives no bonus. Every two points above 10 usually raises the modifier. Every two points below 10 usually lowers it. Saving throws use the same modifier. Proficient saving throws also add the proficiency bonus.
Skill And Passive Values
Skills connect ability modifiers to practical actions. The tool supports no training, half proficiency, proficiency, and expertise. Passive Perception, Passive Investigation, and Passive Insight are also shown. These values help during exploration, hidden clues, traps, and social reading.
Combat And Carrying Details
The calculator also reports initiative, spell save DC, spell attack bonus, and carrying capacity. These extra values help players finish a sheet faster. They also help compare builds before a session. Use the export buttons when you want a saved record.
FAQs
What is an ability score?
An ability score measures a character trait, such as Strength, Dexterity, Constitution, Intelligence, Wisdom, or Charisma. Each score creates a modifier used for checks, saves, attacks, skills, and class features.
How is the ability modifier calculated?
The modifier equals floor((score minus 10) divided by 2). For example, a score of 16 gives +3. A score of 8 gives -1.
What does proficiency bonus mean?
Proficiency bonus represents trained competence. It increases with level. The calculator can set it automatically from level or use your manual value.
How does point buy cost work?
Point buy assigns a cost to base scores from 8 to 15. Higher scores cost more. The calculator totals those costs and compares them with your chosen budget.
Can I use rolled scores?
Yes. Choose rolled or custom scores, then enter the values. Point buy cost may show unavailable when a base score falls outside the point buy range.
What is expertise?
Expertise doubles the proficiency bonus for a skill. This calculator treats expertise as two times the proficiency bonus added to the related ability modifier.
Why are passive scores included?
Passive scores help with hidden information and repeated awareness checks. They equal 10 plus the related skill bonus, before any situational changes.
Can I export the results?
Yes. After calculation, use the CSV button for spreadsheet data. Use the PDF button for a simple printable character summary.