Stardew Valley Mushroom Floor Calculator

Calculator Inputs

Known Mushroom Floor

Known Season Day

Target Season Day

Seasons After Known Day

Minimum Tracking Floor

Maximum Tracking Floor

Planned Clears

Minutes Per Clear

Average Mushrooms Per Clear

Average Value Per Mushroom

Efficiency Percent

Forecast Days

Forecast Table

Forecast Day	Season Offset	Calendar Day	Floor	Status	Elevator	Steps	Expected Gold	Route Note
1	+0	1	119	Visible	115	4	6,120.00g	Use the nearest elevator stop, then descend with stairs.
2	+0	2	118	Visible	115	3	6,120.00g	Use the nearest elevator stop, then descend with stairs.
3	+0	3	117	Visible	115	2	6,120.00g	Use the nearest elevator stop, then descend with stairs.
4	+0	4	116	Visible	115	1	6,120.00g	Use the nearest elevator stop, then descend with stairs.
5	+0	5	115	Hidden	115	0	0.00g	Hidden today because the predicted level ends in 0 or 5.
6	+0	6	114	Visible	110	4	6,120.00g	Use the nearest elevator stop, then descend with stairs.
7	+0	7	113	Visible	110	3	6,120.00g	Use the nearest elevator stop, then descend with stairs.
8	+0	8	112	Visible	110	2	6,120.00g	Use the nearest elevator stop, then descend with stairs.
9	+0	9	111	Visible	110	1	6,120.00g	Use the nearest elevator stop, then descend with stairs.
10	+0	10	110	Hidden	110	0	0.00g	Hidden today because the predicted level ends in 0 or 5.

Example Data Table

Known Floor	Known Day	Target Day	Predicted Floor	Route	Farm Note
119	1	2	118	Elevator 115, down 3	Good repeat route
119	1	5	115	Hidden stop	Track cycle only
92	8	10	90	Hidden stop	Skip farming today
86	12	13	85	Hidden stop	Watch for next reset

Formula Used

The calculator treats the mushroom floor as a tracked cycle. It assumes the known floor drops by one mine level each day. When the floor goes below the minimum tracking floor, it wraps back to the maximum tracking floor.

Range size = maximum floor - minimum floor + 1. Elapsed days = target day - known day + season offset days. Predicted floor = maximum floor - ((maximum floor - known floor + elapsed days) modulo range size).

Floors ending in 0 or 5 are marked hidden. Expected mushrooms = planned clears × average mushrooms × efficiency percent. Expected gold = expected mushrooms × average mushroom value.

How To Use This Calculator

Find one mushroom floor in the deep mine area.
Enter that floor as the known mushroom floor.
Enter the season day when you found it.
Choose the future day you want to check.
Keep the default 81 to 119 range for normal planning.
Add your expected clears, time, mushroom count, and value.
Press Calculate to view the result above the form.
Use CSV or PDF to save the planning report.

Stardew Valley Mushroom Floor Planning Guide

Why Planning Helps

Stardew Valley mushroom floor hunting can feel random. This calculator gives a clear plan. It uses a known mushroom floor, a known season day, and your target day. Then it moves the floor one level upward in the mine sequence for each new day. When the path reaches the bottom limit, it wraps back to the top limit. The result is an estimate, not a save reader.

Start With A Confirmed Floor

A good plan starts with one confirmed floor. Visit the deep mine levels and note the first mushroom floor you find. Use the same season day as your anchor. Add that floor and day into the form. The tool then shows the predicted target floor, the nearest elevator stop, and the number of stairs needed.

Understand Skipped Levels

Some levels are not useful for mushroom floor farming. Floors ending in zero or five are treated as skipped because they are elevator or special stop levels. When the predicted floor lands there, the calculator marks it as hidden. You can still keep tracking the cycle because that skipped level still counts as a day.

Estimate Farming Value

The farming estimate is simple. Enter your expected clears, minutes per clear, mushrooms per clear, and average sell value. The tool multiplies those values by your efficiency percent. This helps compare short checks with longer repeat runs. It also gives a quick gold estimate.

Use The Forecast

The forecast table is helpful when today is not ideal. It lists future days, predicted floors, elevator starts, and route notes. A visible floor near an elevator is usually easier to farm. A hidden floor may be skipped unless you want to keep tracking the cycle.

Save Your Results

CSV and document downloads make the result easier to save. Use CSV for spreadsheets. Use the document button for a simple record. You can keep several runs and compare them later.

Best Use

This calculator is best for planning. Game updates, mods, and save differences can change behavior. Use the result as a smart guide. Confirm the floor in game before spending a whole day farming.

Accuracy Tip

For better accuracy, record each confirmed floor in a small log. Include the date, season, floor number, and whether mushrooms appeared. Patterns become easier to trust after several checks, especially when missed or hidden floors confuse the route again.

FAQs

1. What is a mushroom floor?

A mushroom floor is a mine level where mushrooms can appear for collection. This calculator estimates where that level may be based on a known tracking point.

2. Why do some predicted floors show hidden?

Floors ending in 0 or 5 are treated as skipped stops. The calculator keeps the cycle moving, but it marks those floors as poor farming targets.

3. What known floor should I enter?

Enter the last confirmed mushroom floor you found. Use the exact season day from that discovery for better tracking.

4. Can this read my save file?

No. This tool does not read save files. It uses manual inputs and a planning formula to estimate future floors.

5. Why include efficiency percent?

Efficiency adjusts the farming estimate. Use a lower value when you expect missed mushrooms, slow routes, combat delays, or imperfect repeat runs.

6. What is the best predicted floor?

A visible floor close to an elevator is usually best. It reduces travel time and makes repeated checks easier.

7. What does season offset mean?

Season offset counts future seasons after the known day. Zero means the same season. One means the next season.

8. Should I trust every result?

Treat results as planning estimates. Mods, updates, and save behavior can affect outcomes. Confirm the floor in game before committing a full farming day.