Detailed Guide Coming Soon
We're working on a comprehensive educational guide for the DPS Comparison Calculator. Check back soon for step-by-step explanations, formulas, real-world examples, and expert tips.
The DPS Comparison Calculator allows players to objectively compare two or more ability sets, builds, or characters in terms of sustained damage output per second. DPS (Damage Per Second) is the universal metric for offensive performance across virtually every action RPG, MOBA, MMO, and tactical game. Comparing DPS correctly requires accounting for ability rotation (the sequence of skills used for maximum output), cooldown alignment (how often high-damage abilities can be used relative to sustained filler abilities), ramp-up time (DoT and buff applications that take time to reach full effectiveness), buff windows (temporary DPS boosts from potions, cooldowns, or ally buffs), and target survivability (whether the target lives long enough for sustained DPS to matter versus burst damage for short-fight scenarios). The fundamental DPS formula for any ability rotation is: DPS = Total Damage in Rotation / Total Rotation Time. A complete rotation accounts for every ability used, its cast or animation time, cooldowns, and the damage of each hit or tick. For many classes, sustained DPS differs substantially from burst DPS. A Paladin in WoW might have 40,000 burst DPS in the first 8 seconds of a Templar's Verdict window but only 28,000 sustained DPS across a 4-minute fight once that burst window ends. Comparing burst vs. sustained DPS helps evaluate which spec is better for short dungeon pulls versus long raid boss encounters. Simulation tools like SimulationCraft (WoW) and Path of Building (PoE) model these rotations with Monte Carlo methods, running thousands of simulated combat scenarios to produce statistically reliable average DPS figures.
Sustained DPS = Total Rotation Damage / Rotation Duration Burst DPS = Peak Damage in Window / Window Duration DPS Ratio = Build A DPS / Build B DPS
- 1Step 1: Define the full ability rotation for each build being compared.
- 2Step 2: List each ability's damage, cast/animation time, and cooldown.
- 3Step 3: Construct the rotation timeline — when each ability fires relative to a timer.
- 4Step 4: Sum total damage and divide by rotation cycle time for sustained DPS.
- 5Step 5: Identify burst windows (cooldown stacks, potion usage) for burst DPS.
- 6Step 6: Compare DPS values for both sustained and burst scenarios separately.
In WoW, slower 2-handed weapons (lower attack speed) generally produce higher DPS for Fury Warriors because their procs and Whirlwind scale from weapon damage rather than attack speed. This counter-intuitive result requires simulation to verify because the interaction between proc rate, Recklessness, and execute windows varies significantly between the two choices. SimulationCraft confirms the 4.2% advantage through 25,000 simulated combat iterations.
Static Shiv's charged lightning strike deals consistent burst that improves lane phase DPS. Phantom Dancer's Spectral Waltz (movement speed near champions) improves teamfight repositioning and survivability at no raw DPS cost. The optimal choice depends on game state: Shiv is better for early pressure and kiting isolated targets; PD is better for sustained teamfight performance where survivability matters more than burst.
Fire Mage's Combustion window produces 180,000 DPS for 12 seconds but drops to 75,000 sustained. Fury Warrior maintains 88,000 continuously. In a 60-second fight: Mage total = 12 x 180,000 + 48 x 75,000 = 2,160,000 + 3,600,000 = 5,760,000. Warrior total = 60 x 88,000 = 5,280,000. Mage wins the 60-second fight. For a 30-second fight: Mage = 12x180k + 18x75k = 2160k+1350k = 3,510,000. Warrior = 30x88k = 2,640,000. Mage wins shorter fights even more decisively.
In PoE, skill interactions with passive tree and support gems create dramatic differences between skills used in the same build. Lightning Strike's projectile interactions with Returning Projectiles and Fork support provide multiplicative hit frequency that Cyclone cannot replicate on the same gear. This 33% DPS difference represents a significant build optimization achievable purely through skill selection without changing any gear.
Choosing between two talent builds for a specific raid tier. This application is commonly used by professionals who need precise quantitative analysis to support decision-making, budgeting, and strategic planning in their respective fields
Justifying gear purchase decisions with quantified DPS impact. Industry practitioners rely on this calculation to benchmark performance, compare alternatives, and ensure compliance with established standards and regulatory requirements, helping analysts produce accurate results that support strategic planning, resource allocation, and performance benchmarking across organizations
Evaluating class changes after patch notes release — Academic researchers and students use this computation to validate theoretical models, complete coursework assignments, and develop deeper understanding of the underlying mathematical principles
Researchers use dps comparison computations to process experimental data, validate theoretical models, and generate quantitative results for publication in peer-reviewed studies, supporting data-driven evaluation processes where numerical precision is essential for compliance, reporting, and optimization objectives
Execute Phase DPS
{'title': 'Execute Phase DPS', 'body': 'Many specs have dramatically higher DPS below enemy threshold (typically 20-35% HP). For short boss fights where most of the combat is in execute range, execute-phase DPS matters more than sustained DPS. Always sim for both sustained and execute phases and weight by expected fight profile.'}
Cleave vs Pure Single Target
{'title': 'Cleave vs Pure Single Target', 'body': 'Some builds appear lower on pure single-target sims but dramatically outperform on fights with multiple simultaneous targets. Always check both fight profiles before making a build decision — the best overall build may not be the best in any specific scenario.'} This edge case frequently arises in professional applications of dps comparison where boundary conditions or extreme values are involved. Practitioners should document when this situation occurs and consider whether alternative calculation methods or adjustment factors are more appropriate for their specific use case.
Negative input values may or may not be valid for dps comparison depending on the domain context.
Some formulas accept negative numbers (e.g., temperatures, rates of change), while others require strictly positive inputs. Users should check whether their specific scenario permits negative values before relying on the output. Professionals working with dps comparison should be especially attentive to this scenario because it can lead to misleading results if not handled properly. Always verify boundary conditions and cross-check with independent methods when this case arises in practice.
| Game | Tool | Accuracy | Notes |
|---|---|---|---|
| WoW | Raidbots/SimC | Very High | Industry standard |
| Path of Exile | Path of Building | Very High | Community fork preferred |
| FFXIV | XIVAnalysis/ACT | High | Parse from combat log |
| LoL | Mobalytics/OP.GG | Medium | Approximate, no full rotation sim |
| Genshin | Genshin Optimizer | High | Artifact and team comp optimizer |
Does higher DPS always mean a better build?
Not always — DPS is one dimension of character effectiveness. Survivability, utility (crowd control, buffs), and consistency also matter. A build with 10% lower DPS that never dies contributes more total damage to a raid team than a high-DPS build that dies frequently. Some builds sacrifice DPS for utility (healing, buffing allies) in ways that are net positive for the group. Evaluate DPS within the context of the content difficulty and the role required.
How do I account for ramp-up time in DPS comparisons?
Ramp-up time is the period at the start of a fight when DoTs are being applied, buffs are stacking, and the full rotation has not yet been established. To account for it, calculate DPS separately for the ramp phase (typically 5-15 seconds) and the sustained phase, then weight by the proportion of total fight time each represents. For trash pulls in dungeons (10-20 second fights), ramp-up time is a major factor; for 5-minute raid bosses, it is a minor percentage of total time.
What is a simulation and why is it more accurate than manual calculation?
Manual DPS calculation assumes perfect, deterministic play — every ability used on cooldown, every proc triggered at the optimal moment. Real gameplay has RNG (crit procs, proc triggers, enemy movement), human reaction time, and movement requirements. Monte Carlo simulations run thousands of 'games' of combat with randomized RNG, averaging the results. The outcome is more representative of actual gameplay DPS than a perfect-rotation calculation, typically 5-15% lower than the theoretical maximum.
How does target count affect DPS comparisons?
Single-target and multi-target DPS can differ dramatically. A Frost Mage's Blizzard AoE channels might deal 50,000 total DPS across 5 targets (10,000 per target) but only 20,000 single-target DPS — meaningless for boss encounters. When comparing builds, specify whether you need single-target, 2-target cleave, or full AoE DPS. The optimal build may differ entirely between these scenarios, requiring separate sim profiles for each fight type.
How often should I update my DPS comparison after getting new gear?
Re-simulate after any significant gear change — item level upgrades of 5+, set bonus changes, legendary/unique item changes, or talent modifications. Stat weights change as secondary stats accumulate due to diminishing returns, meaning the optimal skill or talent choice may shift after gearing up. Weekly simming is the standard for serious progression raiders; casual players can sim less frequently but should always sim before major purchases or talent swaps.
What is the difference between theoretical and practical DPS?
Theoretical DPS assumes perfect ability usage, 100% uptime, no movement, and optimal RNG outcomes. Practical DPS (measured in actual gameplay via combat log parsers like WarcraftLogs or Warzone damage reports) accounts for movement phases, mechanic interruptions, positioning requirements, and human reaction time. Practical DPS is typically 70-90% of theoretical DPS for skilled players, and the ratio is itself a measure of player execution quality.
How does target armor or resistance affect DPS comparisons?
Most games have armor or resistance mechanics that reduce damage by a percentage. Since these apply equally to both builds being compared (assuming same damage type), they cancel out in percentage comparisons — Build A being 10% better in raw DPS remains 10% better after armor reduction. However, if one build deals a different damage type with different resistance interaction, or if one build has more armor penetration, the comparison must account for effective damage against the specific target's defensive profile.
Pro Tip
When comparing two builds, always use the same simulation settings: same target count, same fight duration, same item level, same buff setup. Changing even one variable invalidates the comparison. Most simulation tools have preset fight profiles (Patchwerk = stationary single target, HecticAddCleave = movement + adds) that standardize the comparison.
Did you know?
SimulationCraft's Monte Carlo DPS calculations are used not only by players but by WoW's game balance team at Blizzard. The developers run the same SimC profiles internally to test upcoming patches before release, meaning the community's primary theorycraft tool literally influences how the game is balanced.