AC Turnip Calculator
Advanced Stalk Market Prediction Engine for Animal Crossing: New Horizons
Daily Selling Prices (Nook’s Cranny)
— Bells
Unknown
— Bells
Sat PM
Blue line: Your current prices. Grey dashed: Projected average trend.
| Timeframe | Buy Price | Mon | Tue | Wed | Thu | Fri | Sat |
|---|---|---|---|---|---|---|---|
| AM | 100 | — | — | — | — | — | — |
| PM | — | — | — | — | — | — |
What is an AC Turnip Calculator?
The AC Turnip Calculator is an essential tool for players of Animal Crossing: New Horizons who wish to master the “Stalk Market.” By inputting your Sunday purchase price from Daisy Mae and your subsequent daily prices from Nook’s Cranny, the calculator applies algorithmic logic to identify which of the four distinct price patterns your island is currently experiencing. This allows you to sell your turnips at the optimal time, ensuring you never lose Bells and maximize your profit potential.
Every island follows a weekly price trajectory. Understanding these trajectories—ranging from the devastating “Decreasing” pattern to the lucrative “Large Spike”—is the difference between a bell-millionaire and someone left with spoiled inventory. This tool is designed for players who want to take the guesswork out of the market.
AC Turnip Calculator Formula and Mathematical Explanation
The math behind turnip pricing in Animal Crossing is based on a set of internal variables. Each week, your island is assigned a “Pattern ID” based on the previous week’s performance. The AC Turnip Calculator works backward from your data points to solve for the most probable pattern.
Price Pattern Variables
| Variable | Meaning | Unit | Typical Range |
|---|---|---|---|
| Base Price (B) | Sunday purchase price | Bells | 90 – 110 |
| Rate (R) | Price multiplier | Decimal | 0.4 – 6.0 |
| Decay (D) | Daily price drop | Bells | -3 to -5 |
| Spike Phase | Rapid price increase | Days | Mon – Fri |
Practical Examples (Real-World Use Cases)
Example 1: The Large Spike Detection
A player buys turnips at 100 Bells. On Monday and Tuesday, prices drop slightly (94, 89, 84). Suddenly, on Wednesday AM, the price hits 120, followed by 180 in the PM. The AC Turnip Calculator would flag this as a “Large Spike.” Based on the logic, the Thursday AM price will likely hit between 200 and 600 Bells. The user knows to wait for Thursday AM to sell.
Example 2: Avoiding the Decreasing Pattern
If prices start at 90 and drop by 3-5 Bells every single period (86, 82, 78…) without any increase by Wednesday PM, the AC Turnip Calculator identifies a “Decreasing” pattern. In this case, the best strategy is to visit a friend’s island or sell immediately to minimize losses before the Saturday deadline.
How to Use This AC Turnip Calculator
- Enter Sunday Price: Check Daisy Mae’s price on Sunday morning and enter it into the “Sunday Purchase Price” field.
- Track Daily Prices: Check Nook’s Cranny twice a day (once before 12:00 PM and once after 12:00 PM).
- Input Values: Fill in the corresponding AM and PM fields in the calculator.
- Review Predictions: Look at the “Likely Peak Price” and “Detected Pattern” to determine your exit strategy.
- Sell: When the calculator indicates the peak has been reached, head to the shop!
Key Factors That Affect AC Turnip Calculator Results
- Initial Buy Price: The purchase price sets the scale for all future fluctuations. High buy prices often lead to higher peaks but also higher risks.
- Previous Week’s Pattern: The game’s code increases the probability of a spike if you had a decreasing pattern the week before.
- The Wednesday “Pivot”: For many patterns, Wednesday is the day the price trend either spikes or confirms a continuous drop.
- Time Traveling: Changing your console clock can immediately spoil turnips or reset market patterns, rendering the calculator inaccurate.
- Pattern Probability: No calculator can be 100% certain with only one data point. The more prices you enter, the more accurate the prediction.
- Island Multipliers: Each island has a unique seed that dictates the specific rate of decay within the pattern’s bounds.
Frequently Asked Questions (FAQ)
Every island operates on its own random seed. While the patterns are the same, the timing and specific Bell amounts vary significantly.
No, turnips spoil at 5:00 AM the following Sunday. They must be sold within the week they were purchased.
A Large Spike is a pattern where prices rise sharply over three periods, peaking at 200% to 600% of the base price.
This specific logic is optimized for New Horizons, though previous games used similar but slightly different algorithms.
The calculator can still predict patterns with missing data, though it may show a wider range of possible outcomes.
No, checking prices at Nook’s Cranny does not influence the market trend; it only reveals it.
A Small Spike peaks at around 140% to 200% of the base price and is usually followed by a decrease.
Turnips will spoil immediately if you travel backward in time, regardless of the date.
Related Tools and Internal Resources
- Comprehensive Stalk Market Guide – A deep dive into all Animal Crossing market mechanics.
- Daisy Mae Tracking Tool – Track where the turnip seller is and her best prices.
- Nook’s Cranny Upgrade Guide – How to get the best shop for better turnip prices.
- Island Evaluation Tool – See how your island rating affects town visitors.
- Bell Farming Tips – Other ways to make money fast in Animal Crossing.
- What to do with Spoiled Turnips – Don’t let your loss go to waste.