Public calculation checks
These are concrete inputs, hand-worked formulas, expected values, and edge cases. The page calls the same calculation functions as the tools, and the expected values are also asserted in the automated test suite.
Last updated August 27, 2026Passing examples show that the current build reproduces these named formulas and boundaries. They do not prove that every Stardew Valley item or mod is covered. The supported scope remains unmodded 1.6.x Kegs, Preserves Jars, and Dehydrators listed on the methodology page.
If a game update changes a price, recipe, profession rule, or processing time, the corresponding expected value must change here and in the test before ValleyMath can claim support for that update.
Expected value vs current result
One normal Ancient Fruit is compared with one completed Keg batch.
Why this boundary matters: This is the clean base-formula check before quality or profession bonuses are added.
Game-data references: Stardew Valley Wiki — Artisan Goods
One normal Blueberry is processed in a Preserves Jar without professions.
Why this boundary matters: The Jar formula must keep its fixed 50g term; dropping it changes low-value crop rankings.
Game-data references: Stardew Valley Wiki — Artisan Goods
Five normal Starfruit become one Dried Fruit batch with the Artisan profession selected.
Why this boundary matters: Artisan is reached through Tiller. Ignoring the inherited 10% raw-crop value overstates the gain from processing.
Game-data references: Stardew Valley Wiki — Farming professions · Stardew Valley Wiki — Dehydrator
One normal Hops becomes Pale Ale with the Artisan profession selected.
Why this boundary matters: A two-gold rounding difference per Hops becomes material across a large summer harvest.
Game-data references: Stardew Valley Wiki — Farming professions · Stardew Valley Wiki — Artisan Goods
Five normal Coffee Beans become one Coffee while Artisan is selected.
Why this boundary matters: Coffee Beans do not receive Tiller and Coffee does not receive Artisan, so applying either bonus would be incorrect.
Game-data references: Stardew Valley Wiki — Coffee Bean · Stardew Valley Wiki — Coffee
Five normal Grapes become one Raisins batch without professions.
Why this boundary matters: Treating Raisins as a one-Grape output would create five times too much revenue.
Game-data references: Stardew Valley Wiki — Dehydrator
One Dehydrator has seven mornings to process 12 normal Blueberries.
Why this boundary matters: Incomplete batches must stay visible as raw inventory instead of being rounded up or disappearing.
Game-data references: Stardew Valley Wiki — Dehydrator · Stardew Valley Wiki — Artisan Goods
One Sturgeon Roe becomes Caviar with the Artisan profession selected.
Why this boundary matters: The profession applies to the finished Caviar, not to its raw Roe input.
Game-data references: Stardew Valley Wiki — Caviar · Stardew Valley Wiki — Farming professions
One Fairy Rose Honey is compared with Mead while Artisan is selected.
Why this boundary matters: A gross-output optimizer would process this item even though it destroys value. ValleyMath must reject the route.
Game-data references: Stardew Valley Wiki — Honey · Stardew Valley Wiki — Artisan Goods
Gold and Iridium Starfruit are compared with the same 2,250g Wine output without professions.
Why this boundary matters: Processing higher-quality fruit can add less value because the finished Wine does not preserve crop quality.
Game-data references: Stardew Valley Wiki — Artisan Goods
One normal Spice Berry is sold raw with Tiller selected.
Why this boundary matters: The catalog distinguishes crop fruit from forage fruit instead of applying a blanket bonus to every fruit-like item.
Game-data references: Stardew Valley Wiki — Farming professions
Ten Ancient Fruit include three kept units; one Keg has seven mornings.
Why this boundary matters: Bundle, seed, gift, or cooking stock should not inflate backlog or be silently processed.
Game-data references: Stardew Valley Wiki — Artisan Goods
Ancient Fruit arrives on Day 1, but only seven mornings remain for a seven-morning Wine cycle.
Why this boundary matters: An aggregate machine-day total can look feasible while the actual arrival and finish dates are impossible.
Game-data references: Stardew Valley Wiki — Artisan Goods
One Blueberry is eligible for both a Keg and a Preserves Jar, and both machines are available.
Why this boundary matters: Independent route calculators can accidentally count the same crop twice. The mixed planner cannot.
Game-data references: Stardew Valley Wiki — Artisan Goods
Three normal Pumpkins compete for two empty Kegs over a seven-morning horizon.
Why this boundary matters: Twelve aggregate machine-days would incorrectly suggest three jobs fit; real start and finish slots prove only two do.
Game-data references: Stardew Valley Wiki — Artisan Goods
Four normal Blueberries and one empty Dehydrator are available for seven mornings.
Why this boundary matters: The planner must not invent fractional or rounded-up artisan goods.
Game-data references: Stardew Valley Wiki — Dehydrator
Use the crop benchmark for a like-for-like machine ranking, or open the full production planner when inventory, arrival days, and machine capacity interact.