Crit Damage Calculator

Frequently Asked Questions

How is average damage with crits calculated?

Average = base damage × (1 + crit chance × (crit multiplier − 1)). With 100 base, 30% crit and 2.0× multiplier: 100 × (1 + 0.3 × 1) = 130 average per hit.

Is more crit chance or more crit damage better?

It depends on current values. The effective multiplier grows fastest when crit chance and crit damage are balanced; stacking only one has diminishing returns. The calculator compares builds directly.

What does crit multiplier of 2.0× mean?

A 2.0× (or +100% crit damage) hit deals double base damage on a critical. A 1.5× hit deals 150%. Only the extra portion above 1× is gated by crit chance in the average formula.

How do I compare two builds?

Compute each build's average damage multiplier and multiply by its base damage and attack speed for effective DPS. The higher product wins, even if one build has flashier crit numbers.

Provided by AllCalculators.io
Free online calculators for everyday. No registration required.

Estimates for informational purposes only.

Important Disclaimer: Estimates for informational purposes only.

This calculator provides estimates for informational purposes only. Results are based on assumptions and may not reflect actual outcomes. Consult qualified professionals in relevant fields before making important decisions based on these results.

JavaScript is required to use the interactive calculator above. The questions and answers below remain readable without JavaScript.

How This Calculator Works

When you weigh up two gear sets, talents, or stat shards, the question is never "how big is a crit" but "what is my average damage per hit over many swings". Crits are random, so the meaningful figure is the expected value: most hits land for base damage, a fraction land for the crit multiplier, and the long-run average blends the two. This tool computes that expected damage for one build and, optionally, a second build, then tells you which is stronger and by what percentage - the only honest way to compare a high-crit-chance setup against a high-crit-damage one without grinding a dummy for an hour.

Formula / Method

Average damage = base × (1 + critChance × (critMult − 1)). The bracketed term is the expected multiplier: with probability p you deal critMult× and with probability (1 − p) you deal 1×, so the mean multiplier is (1 − p)×1 + p×critMult = 1 + p×(critMult − 1). The crit factor reported is that bracket on its own. To compare builds, the tool divides the larger average by the smaller and subtracts one to express the edge as a percentage. Crit chance is entered as a percentage and clamped to 0–100; the multiplier is the total crit damage (2 = double), not the bonus on top.

Worked Example

Build A: base 100, 40% crit, ×2 multiplier → average = 100 × (1 + 0.40 × (2 − 1)) = 100 × 1.40 = 140. Build B: base 100, 20% crit, ×3 multiplier → average = 100 × (1 + 0.20 × (3 − 1)) = 100 × 1.40 = 140. They tie exactly - a textbook example of why "huge crits" (B) and "frequent crits" (A) can be identical on paper. Nudge Build A to 45% crit and its average rises to 145, a 3.6% edge over B, which is the kind of margin that decides theorycraft debates.

Common Mistakes

Reading a single big crit as your real output - sustained damage is the expected value, not the best-case hit.

Misreading crit damage stats: "+150% crit damage" usually means a ×2.5 multiplier, not ×1.5.

Comparing builds on crit alone while ignoring base-damage differences from weapons or buffs - enter the real base for each.

Forgetting diminishing returns: the marginal value of crit chance depends on current crit damage and vice versa.

Assuming crit chance can exceed 100% usefully - most games cap it, and surplus is wasted unless it converts to another stat.

Tips & FAQ

Crit chance or crit damage? You maximise the product critChance × (critMult − 1), so whichever term is currently smaller usually gives the bigger marginal gain - balance them rather than stacking one. As a rule of thumb, when crit chance is well below 50% extra chance tends to win, and once chance is high extra crit damage pulls ahead; the calculator lets you test the exact crossover for your numbers instead of trusting folklore. Why do my builds tie? Different chance/damage pairs can produce the same expected multiplier; the tie-breaker is then variance (high-crit-damage builds are spikier) and how the game handles overkill, sustain, or burst windows. Does variance matter if the average is equal? For a long fight, no - the averages converge by the law of large numbers; for a one-shot burst or execute threshold, the higher-variance build has a better chance of a huge hit but also a worse chance of a weak one, so pick the spiky build when you need to clear a damage breakpoint and the steady build when you need reliable sustained pressure. Should I value flat base damage? Yes - base scales the entire average linearly, so a base increase multiplies whatever crit setup you already have, which is why a weapon upgrade often beats a marginal crit shard. What about guaranteed crits or always-crit windows? During a forced-crit phase the effective multiplier is simply critMult with no averaging, so abilities that guarantee crits are worth far more on a high-crit-damage build - line them up with your biggest hits for the largest payoff.

Frequently Asked Questions

Related Gaming Calculators