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The Genshin Impact Artifact Efficiency Calculator helps players evaluate how good their artifact rolls are and whether an artifact is worth keeping, upgrading, or discarding. Artifacts are equipment items in Genshin Impact that provide stat bonuses to characters through a main stat and up to four sub-stats. The artifact system is the primary endgame progression system, with the quality of sub-stat rolls determining a character's true damage potential. Each artifact piece belongs to one of five slots: Flower, Plume, Sands, Goblet, and Circlet, each with a fixed set of possible main stats. Sub-stats are randomly assigned when an artifact drops, with 3-4 starting sub-stats on 5-star rarity pieces. Every 4 upgrade levels (at +4, +8, +12, +16, +20), one sub-stat gains a random roll between the minimum and maximum value for that stat. The maximum number of upgrades for a 5-star artifact is +20, yielding exactly 5 sub-stat upgrades (starting with 4 subs) or 4 upgrades (starting with 3 subs). Artifact efficiency is measured by CV (Crit Value), calculated as Crit Rate% x2 + Crit Damage%. This formula accounts for the approximate 1:2 ratio between crit rate and crit damage value. A perfect 5-star Flower artifact with max rolls in Crit Rate and Crit Damage can have up to approximately 54.4 CV, though 40+ is generally considered excellent for endgame content. Different characters prioritize different sub-stats: Elemental Mastery builds for Sucrose value EM sub-stats; HP-scaling healers like Barbara prioritize HP%; and some physical DPS characters value ATK% and Crit stats equally. The artifact grind in Genshin Impact is notoriously RNG-dependent, with estimates suggesting 50+ artifact domain clears per piece of good gear.
Crit Value (CV) = Crit Rate% x 2 + Crit Damage% Artifact Score = Sum of (sub-stat value / max sub-stat value) for relevant stats Rolls remaining = (20 - current level) / 4
- 1Step 1: Identify the artifact's main stat and verify it matches what your character needs.
- 2Step 2: Check all four sub-stats for relevance to your character's damage formula.
- 3Step 3: Calculate current CV (Crit Rate% x2 + Crit Damage%) for crit-focused characters.
- 4Step 4: Count upgrade slots remaining: (20 - current level) / 4, rounded down.
- 5Step 5: Estimate best-case scenario if all remaining rolls land on best sub-stats.
- 6Step 6: Compare to your current best artifact — keep if best-case is an improvement.
For Hu Tao, a Pyro DMG Goblet is mandatory and having both Crit Rate and Crit Damage as starting sub-stats is excellent. The ATK sub-stat is irrelevant for Hu Tao (she scales on HP), but the two crit rolls and one HP% roll outweigh this. With 4 remaining upgrades potentially all hitting crits, CV could reach 26.4+23.2 = approximately 49.6 — exceptional for this slot.
This Feather has one excellent roll (19.4% CRIT DMG is nearly max at 19.5% per roll) but two completely useless sub-stats. The ATK% sub-stat is useful. At +8, it has received 2 upgrades — if the remaining 3 upgrades all hit CRIT DMG, CV could reach 19.4+3x7 = 40.4, justifying keeping. However, the probability of all 3 hitting the same stat is low.
Summing CV across all five artifacts gives a character's total Crit Value before accounting for character base crit, weapon crits, and set bonuses. A total of 137 indicates significant room for improvement — competitive Spiral Abyss players target 200+ total CV on main DPS characters. The weakest link is the Sands at only 18 CV, likely lacking crit sub-stats.
Sucrose's kit shares her own Elemental Mastery with the team, making EM the primary and often only relevant sub-stat. CV calculations are irrelevant for Sucrose. An EM-focused Sucrose aiming for 800+ EM needs dedicated EM main stats on 2-3 pieces plus EM sub-stat rolls throughout all five artifact slots.
Architects and interior designers use Genshin Artifact to calculate floor areas, wall surface areas for material estimation, and spatial volumes for HVAC sizing, ensuring accurate quantity takeoffs that directly affect project budgets and material procurement schedules.
Civil engineers apply Genshin Artifact in earthwork calculations to determine cut and fill volumes, road surface areas for paving estimates, and cross-sectional areas of drainage channels and culverts that must handle design storm flow rates.
Manufacturing engineers use Genshin Artifact to calculate material requirements for stamped, machined, or formed parts, determine surface areas for coating and plating processes, and optimize nesting layouts that minimize raw material waste in sheet metal fabrication.
Surveyors and land planners rely on Genshin Artifact to compute parcel areas from boundary coordinates, calculate setback distances for zoning compliance, and determine grading volumes for site preparation in residential and commercial development projects.
Degenerate shapes with zero dimension
In practice, this edge case requires careful consideration because standard assumptions may not hold. When encountering this scenario in genshin artifact calculations, practitioners should verify boundary conditions, check for division-by-zero risks, and consider whether the model's assumptions remain valid under these extreme conditions.
Very large or astronomical dimensions
In practice, this edge case requires careful consideration because standard assumptions may not hold. When encountering this scenario in genshin artifact calculations, practitioners should verify boundary conditions, check for division-by-zero risks, and consider whether the model's assumptions remain valid under these extreme conditions.
Non-Euclidean surface calculations
In practice, this edge case requires careful consideration because standard assumptions may not hold. When encountering this scenario in genshin artifact calculations, practitioners should verify boundary conditions, check for division-by-zero risks, and consider whether the model's assumptions remain valid under these extreme conditions.
| Sub-Stat | Min Roll | Max Roll | Average Roll |
|---|---|---|---|
| CRIT Rate% | 2.7% | 3.9% | 3.3% |
| CRIT DMG% | 5.4% | 7.8% | 6.6% |
| ATK% | 4.1% | 5.8% | 5.0% |
| HP% | 4.1% | 5.8% | 5.0% |
| Elemental Mastery | 16 | 23 | 20 |
| Energy Recharge% | 4.5% | 6.5% | 5.5% |
What is a good Crit Value for an artifact?
For individual pieces, 30+ CV is considered excellent, 20-30 is good, and below 15 is generally discardable for endgame content. For full five-piece sets, a total CV of 180-200+ is considered strong for Spiral Abyss content. These benchmarks assume Crit-scaling DPS characters — EM, HP%, or healing builds use completely different evaluation criteria.
Should I level up every artifact to evaluate it?
Leveling artifacts costs significant Mora and EXP materials. A common approach is to level promising artifacts to +4 to reveal the first upgrade roll and assess direction, then to +8 to confirm the trend before committing to full +20. Artifacts with no relevant sub-stats at +0 (three wasted stats) should be discarded immediately to save resources. Only artifacts with at least 2 relevant sub-stats and a correct main stat are worth leveling beyond +4.
What are the best artifact sets for DPS characters?
This changes with each version update but general endgame standards include: 4-piece Crimson Witch of Flames for Pyro DPS (Hu Tao, Yoimiya), 4-piece Emblem of Severed Fate for Burst-centric characters, 4-piece Marechaussee Hunter for Furina team compositions, and 4-piece Noblesse Oblige for support characters buffing the team. The Genshin Impact community maintains current tier lists for each character at resources like Keqing's Maid.
How many artifacts should I farm before building a character?
Artifact farming in Genshin is extremely RNG-dependent. Statistical analysis by the community suggests that reaching 90th percentile artifact quality for a typical DPS character requires roughly 400-600 domain runs over weeks of resin investment. Most casual players stop at 60-70th percentile quality, which is sufficient for 36-star Spiral Abyss clear on most characters with strong team compositions.
What is the Crit Ratio and why does 1:2 matter?
The standard optimal Crit Ratio is 1:2 (Crit Rate to Crit Damage). For every 1% Crit Rate you have, you ideally want 2% Crit Damage to maximize average damage output. This is derived from the damage formula where average multiplier = 1 + Crit Rate x Crit Damage. The 1:2 ratio mathematically maximizes this product for a given total of CR+CD points, assuming you can reach 100% Crit Rate eventually.
How does resin affect artifact farming efficiency?
Original Resin is Genshin's stamina system — you spend 20 Resin per artifact domain run, and each run drops 2-4 artifact pieces. With Condensed Resin (crafted from 40 resin), one use grants double rewards. With 160 daily resin cap, you get 8 standard runs or 4 condensed runs per day. At 3 artifacts per run average, a serious farmer collects roughly 24-30 artifact pieces per day.
Can I use Genshin Optimizer to evaluate artifacts?
Yes — Genshin Optimizer is the community's premier artifact evaluation tool. It imports your character and artifact data, calculates expected damage output for each combination, and identifies your best possible artifact set from owned pieces. Plugins like Good (Genshin Open Object Description) allow artifact data export from the game client for automated analysis, eliminating guesswork from the evaluation process.
プロのヒント
Always prioritize correct main stats over sub-stats. A perfect sub-stat roll on the wrong main stat is always worse than a mediocre sub-stat roll on the correct main stat for any character.
ご存知でしたか？
The probability of rolling a perfectly-distributed 5-star artifact with all rolls on Crit Rate and CRIT Damage is approximately 1 in 47 million. Even professional content creators who play 8+ hours daily rarely obtain truly perfect artifacts.