Calculate damage per second for any weapon or ability
Damage Per Second, or DPS, is the single most important number when evaluating a weapon, ability, or character build in virtually every action game, RPG, shooter, MOBA, and MMO ever made. Whether you are theorycrafting a new build in a looter-shooter, comparing two swords in an action RPG, or optimizing your loadout in a first-person shooter, knowing the true DPS output of your setup separates good players from great ones. At its simplest level, DPS is just damage multiplied by attack speed. If a weapon hits for 150 damage and swings twice per second, its base DPS is 300. But real games are far more nuanced. Critical hits dramatically increase average output. Elemental procs add separate damage streams that activate probabilistically. Magazine size and reload time create cycles that lower your real sustained damage below the raw burst number. Enemy armor absorbs a percentage of each hit unless you stack armor penetration. Global damage bonuses from buffs, skills, and gear scale everything upward. Only when all of these factors are combined does your true effective DPS emerge. This DPS Calculator handles all of those layers. In Simple mode you enter just your damage range and attacks per second to get an instant baseline number. Switch to Advanced mode and you gain access to critical hit chance, critical multiplier, magazine and reload inputs for sustained DPS, elemental damage with a proc chance, global damage bonus percentage, target armor and your armor penetration, projectile count for shotgun-style weapons, and an optional target HP field that produces a Time to Kill estimate. The calculator outputs burst DPS — your maximum instantaneous rate without reload penalty — alongside sustained DPS averaged over full reload cycles, and effective DPS after armor mitigation. Every result updates in real time as you type, so you can instantly see how adding 10% crit chance or equipping a better magazine mod changes your output. The visual DPS breakdown chart shows at a glance what percentage of your damage comes from base hits, from critical hit bonus, and from elemental procs, letting you identify where further investment pays off. The optimizer tip at the bottom of the results tells you in plain language which stat to prioritize next for the biggest gain. For weapon comparisons, simply note the effective DPS of weapon A, clear the form, and enter weapon B. The performance rating — scored from S down to D — gives you an at-a-glance evaluation of your current setup's efficiency, factoring in how well your sustained DPS holds up relative to burst and how much of your damage comes from high-value critical hits. All calculations run entirely in your browser with no data sent to any server. There is no login required and the tool is completely free. Use it on mobile or desktop to fine-tune any weapon configuration in any game, genre, or difficulty level.
Understanding DPS
What Is DPS?
DPS stands for Damage Per Second and measures how much total damage a weapon, ability, or character can output in one second of sustained combat. It is the standard metric for comparing offensive capability across different weapons, builds, and playstyles in virtually all action games. A weapon with higher DPS will theoretically eliminate enemies faster than a lower-DPS alternative, all else being equal. DPS is calculated by multiplying average damage per hit by the number of hits per second, then layering modifiers such as critical hits, elemental procs, buffs, and armor penetration on top of that base value to arrive at a final effective number.
How Is DPS Calculated?
The core formula is: DPS = Average Damage Per Hit × Attacks Per Second. Average damage uses the midpoint of your weapon's damage range: (Min Damage + Max Damage) / 2. Critical hits adjust the average upward using the formula: Crit-Adjusted Damage = Base Avg × (1 + Crit Chance × (Crit Multiplier − 1)). Elemental DPS adds: APS × Elemental Avg × Elemental Proc Chance. The total pre-armor DPS is then multiplied by (1 + Global Bonus%) and reduced by the effective armor factor. Effective Armor = max(0, Target Armor% − Armor Penetration%), and final Effective DPS = Total DPS × (1 − Effective Armor%). Sustained DPS accounts for reload by computing Damage per Magazine divided by the full cycle time (fire time + reload time).
Why Does DPS Matter?
DPS matters because it directly determines how quickly you can eliminate targets, clear content, and contribute to group scenarios. In competitive or cooperative games, higher DPS translates to faster kills, fewer deaths caused by prolonged fights, and better use of limited ability windows. Understanding DPS also reveals trade-offs: a weapon with massive single-hit damage but slow attack speed may have lower DPS than a fast-firing weapon with smaller hits. Critical hit systems create high variance — knowing your crit-adjusted DPS shows whether stacking crit is actually worth the investment. Effective DPS against armored targets shows whether armor penetration gear provides meaningful gains.
Limitations of DPS Calculators
DPS numbers are theoretical averages based on uninterrupted combat. Real gameplay introduces interruptions: movement, ability activation delays, crowd control, positioning, and target switching all reduce practical DPS below the calculated value. Critical hits are probabilistic — you may hit a streak of no-crits or all-crits within short windows that deviates from the long-run average. Elemental proc chances follow the same probabilistic behavior. Enemy mechanics such as damage immunity phases, shields with special properties, or resistances not modeled here can reduce your actual output further. This calculator provides a solid baseline for comparisons and build optimization, but always validate in-game with dummy targets or combat logs when precision matters.
Formulas
Average damage per hit multiplied by attack speed. This is the raw output before any modifiers are applied.
Expected average DPS accounting for critical hit probability. At 25% crit chance with 2.0x multiplier, this adds 25% more damage on average.
Real combat DPS over full magazine cycles. Fire Time = Magazine Size / Attacks Per Second. Accounts for downtime during reloads.
Final damage output after subtracting the target's effective armor reduction. Armor penetration directly offsets armor percentage.
Reference Tables
Crit Chance Impact on Average DPS (2.0x Multiplier)
| Crit Chance | DPS Multiplier | Effective Increase |
|---|---|---|
| 5% | 1.05x | +5% |
| 10% | 1.10x | +10% |
| 25% | 1.25x | +25% |
| 50% | 1.50x | +50% |
| 75% | 1.75x | +75% |
| 100% | 2.00x | +100% |
Reload Efficiency — Sustained vs Burst DPS
| Magazine Size | Fire Rate (APS) | Fire Time | Reload Time | Sustained/Burst Ratio |
|---|---|---|---|---|
| 10 | 2.0 | 5.0s | 2.5s | 67% |
| 20 | 2.0 | 10.0s | 2.5s | 80% |
| 30 | 2.0 | 15.0s | 2.5s | 86% |
| 50 | 2.0 | 25.0s | 2.5s | 91% |
| 100 | 2.0 | 50.0s | 2.5s | 95% |
Worked Examples
Assault Rifle with Crits
Average damage per hit = (80 + 120) / 2 = 100
Base DPS = 100 × 2.5 = 250
Crit adjustment = 1 + 0.25 × (2.0 - 1) = 1.25
Crit-adjusted DPS = 250 × 1.25 = 312.5
Shotgun with Sustained DPS and Armor
Damage per shot = 40 × 8 = 320
Burst DPS = 320 × 1.2 = 384
Damage per magazine = 320 × 6 = 1,920
Fire time = 6 / 1.2 = 5.0 seconds
Sustained DPS = 1,920 / (5.0 + 3.0) = 240
Effective armor = max(0, 30% - 10%) = 20%
Effective sustained DPS = 240 × (1 - 0.20) = 192
Time to Kill Calculation
Time to Kill = Target HP / Effective DPS
TTK = 12,000 / 500
TTK = 24.0 seconds
How to Use the DPS Calculator
Enter Your Damage Range
Type your weapon's minimum and maximum damage values into the Damage Per Hit fields. For fixed-damage weapons, enter the same value in both fields. The calculator automatically averages the range for all further computations.
Set Attack Speed and Crits
Enter your attacks per second (fire rate), then fill in your critical hit chance as a percentage and your critical multiplier (e.g., 2.0 for double damage on crits). The results update instantly to show DPS with and without crits.
Switch to Advanced Mode for Full Analysis
Click Advanced mode to unlock magazine size and reload time for sustained DPS, elemental damage and proc chance, global damage bonus from buffs or skills, target armor and your armor penetration, projectile count for multi-pellet weapons, and a target HP field for Time to Kill calculation.
Read the Breakdown and Optimize
Review the Effective DPS, performance rating, and the stacked bar chart showing how much damage comes from base hits, critical bonus, and elemental procs. The optimizer tip at the bottom tells you exactly which stat to improve next for the biggest DPS gain.
Frequently Asked Questions
What is the difference between burst DPS and sustained DPS?
Burst DPS is your maximum damage rate during continuous firing, ignoring any pauses for reloading. It represents the theoretical ceiling of your output in a short window. Sustained DPS factors in the reload cycle — the time spent reloading reduces your average damage over longer fights. For weapons with small magazines and long reload times, sustained DPS can be 20–50% lower than burst DPS. In boss fights or extended encounters, sustained DPS is the more accurate predictor of performance. Use burst DPS to compare weapons with similar reload profiles, and sustained DPS when magazine management is part of the gameplay.
How does the critical hit formula work?
The crit-adjusted average damage formula is: Base Avg × (1 + Crit Chance × (Crit Multiplier − 1)). For example, with 100 average damage, 30% crit chance, and 2.0x multiplier: 100 × (1 + 0.30 × (2.0 − 1)) = 100 × 1.30 = 130 average damage per hit. This reflects the expected value across many hits — in 100 hits, 30 would crit for 200 damage and 70 would deal 100, averaging to 130 each. The formula works identically regardless of whether your multiplier is stated as 2x, 200%, or +100% bonus damage.
How is effective DPS calculated against armored targets?
Effective DPS applies your armor penetration against the target's armor to find the residual damage reduction. Effective Armor = max(0, Target Armor% − Armor Pen%). If the target has 40% armor and you have 15% armor penetration, effective armor is 25%. The final effective DPS is then Total DPS × (1 − 0.25) = 75% of your raw DPS. This means armor penetration stats only help when you face armored targets, and the benefit is exactly linear — each 1% of armor penetration against a 40%-armored enemy increases your effective DPS by about 1.33% of the mitigated portion.
What does the performance rating (S/A/B/C/D) mean?
The performance rating evaluates your weapon setup's overall efficiency. It factors in how close your sustained DPS is to your burst DPS (good reload efficiency scores higher), and how much of your damage comes from high-value critical hits. An S rating means your setup is highly optimized — strong crit contribution and minimal reload downtime. A D rating means significant room for improvement, typically from very low crit chance or a poor magazine-to-reload-time ratio that severely hurts sustained output. The rating is relative to your own setup and is meant as a quick self-assessment guide rather than a comparison against other players.
How do I calculate DPS for a shotgun with multiple pellets?
In Advanced mode, enter the damage per pellet in the damage fields, set your fire rate (shots per second), and enter the pellet count in the Projectiles field. The calculator multiplies damage per hit by the projectile count so that one trigger pull contributing 8 pellets of 50 damage each is correctly treated as 400 damage per shot before further modifiers. Magazine size for shotguns should reflect the number of shells, not pellets, since you fire one shell per trigger pull.
Why is my sustained DPS much lower than burst DPS?
Sustained DPS drops when reload time is long relative to your magazine size. If you fire your entire magazine in 2 seconds and spend 3 seconds reloading, you are effectively only attacking for 40% of the time, meaning your sustained DPS is around 40% of burst. To improve this ratio, either increase magazine size (more shots before the mandatory reload pause) or reduce reload time (shorter downtime between bursts). Many high-damage, slow-reload weapons suffer this problem, making them weaker in sustained encounters than their burst numbers suggest.