body {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
line-height: 1.6;
color: #333;
max-width: 800px;
margin: 0 auto;
padding: 20px;
background-color: #f4f6f8;
}
.ak-calculator-container {
background-color: #1c1c1c; /* Arknights UI Dark Theme */
color: #fff;
padding: 30px;
border-radius: 4px;
box-shadow: 0 4px 15px rgba(0,0,0,0.3);
border-left: 5px solid #29b6f6; /* Cyan accent */
margin-bottom: 40px;
}
.ak-header {
text-align: center;
border-bottom: 1px solid #444;
padding-bottom: 20px;
margin-bottom: 25px;
}
.ak-header h2 {
margin: 0;
font-size: 28px;
color: #fff;
text-transform: uppercase;
letter-spacing: 2px;
}
.ak-input-grid {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 20px;
margin-bottom: 25px;
}
@media (max-width: 600px) {
.ak-input-grid {
grid-template-columns: 1fr;
}
}
.ak-input-group {
display: flex;
flex-direction: column;
}
.ak-input-group label {
font-size: 14px;
margin-bottom: 8px;
color: #ccc;
font-weight: 600;
}
.ak-input-group input {
padding: 12px;
background-color: #333;
border: 1px solid #555;
color: #fff;
font-size: 16px;
border-radius: 2px;
transition: border-color 0.3s;
}
.ak-input-group input:focus {
outline: none;
border-color: #29b6f6;
}
.ak-calc-btn {
width: 100%;
padding: 15px;
background-color: #29b6f6;
color: #000;
border: none;
font-size: 18px;
font-weight: 800;
text-transform: uppercase;
cursor: pointer;
transition: background-color 0.3s;
margin-bottom: 25px;
border-radius: 2px;
}
.ak-calc-btn:hover {
background-color: #039be5;
}
.ak-results {
background-color: #2a2a2a;
padding: 20px;
border-radius: 4px;
display: none; /* Hidden by default */
}
.ak-result-row {
display: flex;
justify-content: space-between;
margin-bottom: 15px;
border-bottom: 1px solid #444;
padding-bottom: 10px;
}
.ak-result-row:last-child {
border-bottom: none;
margin-bottom: 0;
padding-bottom: 0;
}
.ak-label {
color: #aaa;
}
.ak-value {
font-weight: bold;
color: #29b6f6;
font-size: 18px;
}
.ak-prob-box {
background-color: #333;
padding: 15px;
margin-top: 15px;
border-left: 3px solid #ffeb3b; /* Yellow accent for RNG */
}
.article-content {
background-color: #fff;
padding: 30px;
border-radius: 8px;
box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}
.article-content h2 {
color: #2c3e50;
border-bottom: 2px solid #eee;
padding-bottom: 10px;
margin-top: 30px;
}
.article-content p {
margin-bottom: 15px;
font-size: 16px;
}
.highlight-box {
background-color: #e3f2fd;
padding: 15px;
border-radius: 4px;
margin: 20px 0;
}
function calculateArknightsPulls() {
// Get Inputs
var orundum = parseInt(document.getElementById('akOrundum').value) || 0;
var op = parseInt(document.getElementById('akOp').value) || 0;
var singlePermit = parseInt(document.getElementById('akSinglePermit').value) || 0;
var tenPermit = parseInt(document.getElementById('akTenPermit').value) || 0;
var currentPity = parseInt(document.getElementById('akCurrentPity').value) || 0;
// Validation
if (orundum < 0) orundum = 0;
if (op < 0) op = 0;
if (singlePermit < 0) singlePermit = 0;
if (tenPermit < 0) tenPermit = 0;
if (currentPity < 0) currentPity = 0;
// Constants
var OrundumPerPull = 600;
var OrundumPerOP = 180;
// Calculations
var opToOrundum = op * OrundumPerOP;
var grandTotalOrundum = orundum + opToOrundum;
var pullsFromOrundum = Math.floor(grandTotalOrundum / OrundumPerPull);
var pullsFromPermits = singlePermit + (tenPermit * 10);
var totalPulls = pullsFromOrundum + pullsFromPermits;
// Probability Calculation (Cumulative probability of getting at least one 6-star)
// Logic: P(At least one) = 1 – P(None)
// We must iterate through every pull because the rate changes after 50 pity.
var chanceOfFailure = 1.0;
var simPity = currentPity;
for (var i = 1; i = 50) {
currentRate = 0.02 + ((simPity – 49) * 0.02);
}
// Cap rate at 100%
if (currentRate > 1.0) currentRate = 1.0;
// Probability of NOT getting a 6-star this pull
chanceOfFailure *= (1.0 – currentRate);
// Increment pity for next pull
simPity++;
// If we hit 100% chance (hard pity), the loop continues but chanceOfFailure becomes 0
if (currentRate >= 1.0) break;
}
var probabilitySuccess = (1.0 – chanceOfFailure) * 100;
// Hard Pity Calculation
// Hard pity guarantees a 6-star at 99 pulls since last one.
var pullsToHardPity = 99 – currentPity;
if (pullsToHardPity 99.99) probDisplay = "Guaranteed (100%)";
document.getElementById('resProb6Star').innerHTML = probDisplay;
// If total pulls exceed hard pity requirement, show 0
var remainingToHard = pullsToHardPity – totalPulls;
if (remainingToHard = pullsToHardPity) {
document.getElementById('resToHardPity').innerHTML = "Reached within " + pullsToHardPity + " pulls";
document.getElementById('resToHardPity').style.color = "#4caf50″;
} else {
document.getElementById('resToHardPity').innerHTML = remainingToHard + " more needed";
document.getElementById('resToHardPity').style.color = "#ffeb3b";
}
// Show results div
document.getElementById('akResults').style.display = 'block';
}
Mastering the Arknights Gacha: Resource & Probability Guide
Planning your pulls in Arknights is essential for Free-to-Play (F2P) players and monthly card users alike. Unlike many other gacha games, Arknights utilizes a complex currency system involving Orundum, Originium Prime (OP), and Headhunting Permits. This calculator helps you consolidate all your assets to see exactly how many chances you have to recruit your favorite Operators.
How the Arknights Calculator Works
This tool aggregates your various currency types into a single "Total Pulls" metric. Here is the math behind the conversion:
- Orundum: The standard currency for headhunting. 600 Orundum equals 1 Pull.
- Originium Prime (OP): The premium currency. 1 OP converts to 180 Orundum. While OP can be used for skins, converting it is necessary for maximum pulling power.
- Headhunting Permits: Vouchers that grant direct pulls without consuming Orundum.
Formula:
Total Pulls = Floor( (Orundum + (OP × 180)) / 600 ) + Permits + (10 × 10-Roll Permits)
Understanding the Pity System
Arknights features one of the more generous "Pity" systems in the gacha genre, but it can be confusing. Understanding your current "Pity Count" is crucial for using this calculator effectively.
1. Base Probability
The standard rate for a 6-Star Operator is 2%. This applies to your first 50 pulls on any standard or limited banner (note: pity counts are often separated between standard and limited banners).
2. The Soft Pity (50+ Pulls)
If you do not obtain a 6-Star Operator within 50 pulls, the game introduces a "Soft Pity" mechanic. Starting from the 51st pull, the 6-Star rate increases by 2% per pull.
- Pull 51: 4% chance
- Pull 52: 6% chance
- Pull 60: 22% chance
- Pull 70: 42% chance
Due to this ramping probability, it is statistically very unlikely to go beyond 60-70 pulls without seeing a 6-Star. The calculator above uses a simulation loop to estimate your cumulative probability based on this specific mathematical curve.
3. Hard Pity
Technically, the rate reaches 100% at pull 99. However, virtually all players will obtain a 6-Star well before reaching this theoretical hard cap.
Strategy Tips for Resource Management
To maximize your roster efficiency, consider these tips when using the Arknights Calculator:
- Save for Limited Banners: Limited Operators (like during Anniversary events) have separate pity counters that do not carry over. Ensure you have significant savings (300 pulls guarantees a "spark" redemption) if you are targeting a specific limited unit.
- The "First 10" Rule: On standard banners, the first 10 pulls guarantee at least one 5-Star or higher. Many players do single pulls until they hit this guarantee, then stop if they are saving.
- Annihilation Farming: Ensure you complete your weekly Annihilation to max out your Orundum income (up to 1,800 per week depending on progression).
Use the calculator above regularly to track your savings progress towards the next big event banner!