Borderlands DPS & Time-to-Kill Calculator
Quickly compare weapon setups by estimating average shot damage, burst DPS, sustained DPS, and time-to-kill (TTK).
Why use a Borderlands calculator?
In Borderlands, weapon cards can be deceptive. A gun with lower listed damage might still perform better because of faster fire rate, larger magazine, better crit scaling, or stronger elemental synergy. A calculator helps you move from guesswork to measurable comparisons.
This page focuses on practical combat output: how much damage you deal per shot on average, how fast you deal it, and how long it takes to drop a target with realistic reload downtime included.
What this calculator measures
- Average damage per shot: base damage adjusted by gun, element, crit expectation, and enemy resistance.
- Burst DPS: damage output during active firing before considering reload penalties.
- Sustained DPS: long-term DPS including reload downtime.
- Shots and reloads needed: expected ammo and reload count to defeat a target.
- Time to kill (TTK): estimated kill time using discrete shot + reload timing.
How the math works
1) Average shot damage
The calculator starts with your base shot damage, then applies additive percentage bonuses (gun and elemental), followed by expected critical scaling:
Average Crit Multiplier = 1 + (Crit Chance × Crit Bonus)
Finally, enemy resistance reduces the final number. For example, 15% resistance means you keep 85% of your computed shot damage.
2) Burst and sustained DPS
Burst DPS is straightforward: average shot damage multiplied by fire rate. Sustained DPS includes magazine cycling, so reload time matters a lot. If two weapons have similar burst output, the one with better mag/reload flow may win over longer fights.
3) Time to kill (TTK)
TTK is calculated from total shots required to clear enemy health, plus the reloads needed between magazines. This gives a more realistic combat estimate than simple health ÷ DPS for many weapon types.
How to compare two builds quickly
- Enter Weapon A stats and note sustained DPS + TTK.
- Change only one variable at a time (for example, crit chance or reload speed).
- Enter Weapon B stats and compare outcomes.
- Use enemy resistance to simulate armored, shielded, or elemental-resistant targets.
Practical optimization tips
Prioritize consistency over peak numbers
Massive card damage can underperform if reloads are slow or crit uptime is low. Sustained DPS often predicts boss-fight performance better than single-shot damage.
Model your real crit rate honestly
If you set crit chance too high compared to your actual gameplay, you can overvalue crit-focused setups. Enter a realistic percentage for your aim, target behavior, and encounter type.
Element and resistance matchups matter
Elemental bonuses can completely change rankings depending on enemy type. Try multiple resistance values to approximate campaign zones, endgame content, or raid encounters.
FAQ
Does this calculator support every Borderlands title?
It is designed as a universal approximation and can be used for Borderlands 2, Borderlands 3, or similar looter-shooter theorycrafting. Exact formulas vary by game and patch.
Does it include all skill tree effects?
No. It captures core damage flow. Highly specific mechanics (conditional multipliers, splash quirks, anointments, or unique legendary interactions) are not fully modeled here.
Can I use this for weapon farming decisions?
Absolutely. It is especially useful when deciding whether a new roll is worth keeping, rerolling, or replacing based on practical kill speed.
Disclaimer: This fan-made calculator is not affiliated with Gearbox or 2K.