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What you can compute here

Everything on GameCalc is a calculator first and an explanation second. The tools cover the number-heavy parts of the games people actually sink time into: Minecraft level and enchanting math, Stardew Valley crop profit per day, Roblox marketplace fees and DevEx payouts, and the same treatment for Palworld, Old School RuneScape, Satisfactory, Factorio and Pokémon type matchups. Each one runs the same arithmetic the game runs — not a rounded approximation — and then shows its work, so you can see which input moved the answer.

The three rules behind the numbers

Minecraft levels are not linear. XP points and levels are two different currencies, and each level costs more points than the one before it. Crossing from level n to n+1 costs 2n + 7 points up to level 15, 5n − 38 from level 16 to 30, and 9n − 158 from level 31 upward. That last jump is the one that catches people out: past level 30 the cost per level starts rising roughly three times as fast. This is why level 40 is not twice as expensive as level 20 — it is more than five times as expensive.

Stardew profit is gold per day, not gold per harvest. A pumpkin sells for 320g but takes 13 days; a parsnip sells for 35g and takes four. The only fair comparison divides net gold by the 28 days of a season. That formula has to treat two crop behaviours differently: single-harvest crops pay for a seed every time you replant, while regrowing crops pay once and then keep producing. The base figures assume no Tiller or Agriculturist profession, no quality stars and no fertilizer — those multiply the result rather than changing the ranking.

Roblox takes two cuts, at two different moments. The marketplace fee happens at the point of sale: the platform keeps about 30% of the listed price, so an item sold at R$ 100 puts R$ 70 into your balance as earned Robux. The DevEx rate happens later, at cash-out, and only applies to earned Robux — Robux you bought cannot be cashed out. The current standard rate is $0.0038 per Robux (in force for Robux earned on or after 5 September 2025; it was $0.0035 before that), and eligible age-verified U.S. creators aged 18 and over get $0.0054 on qualifying spend.

Gold per day is net gold over a 28-day season, using each crop’s base sale price with no professions, quality stars or fertilizer. Blueberry regrows, so one seed keeps paying; that is why a 50g berry can out-earn a 250g melon.

Three worked examples

Example 1 — how much XP a level-30 enchantment really costs. Reaching level 30 from zero takes 1,395 XP points. A single level-30 enchantment spends three levels, and because that crosses the level-31 boundary it costs 363 points — not three times the cost of one level. Bottles o’ Enchanting roll 3 to 11 points and average 7, which makes them the practical way to bank points: expect about 199 bottles to climb from zero to level 30, and about 52 bottles per enchantment after that. A common zombie or skeleton drops 5 points, so the same enchantment is roughly 73 mob kills.

Example 2 — the crop that actually pays. Over one 28-day season a parsnip patch nets 3.75 gold per day, a pumpkin patch 15.71, and a blueberry patch 18.57. Pumpkin looks four times better than parsnip on sale price alone, but the honest number is per day, and blueberry wins the season because one 80g seed is harvested four times instead of being rebought. Plant the top of that list, then layer professions and fertilizer on top.

Example 3 — what a R$ 100 gamepass is worth. Sell it and the marketplace keeps 30%, leaving R$ 70 as earned Robux. Cash that out at the standard rate and it is worth $0.27. Roblox sets a minimum request of 30,000 earned Robux, which is $114.00 at the standard rate — or $162.00 for an eligible age-verified U.S. creator aged 18 or over. Treat that figure as a planning number, not a paycheck: it is a floor you must reach before any money moves.

How to read a result

A calculator is only as honest as the inputs you give it, and three habits make most of the difference. Find the input that dominates. In crop math it is usually the number of growing days left in the season rather than the seed price; in XP math it is which side of level 30 you are standing on. Change that one input before you trust any ranking. Compare on the same denominator. Gold per day, dollars per Robux, points per level — never the raw sale price or the sticker price, both of which flatter whichever option carries the bigger headline number. And respect the floors. The DevEx minimum of 30,000 earned Robux means a balance of 29,000 is worth nothing in cash however good the rate looks; the same shape appears in crops that cannot mature before the season flips, which a good calculator refuses to count instead of selling you fantasy profit.

Tools first, not fluff

Every calculator here does real game math — the same formulas the games use — and shows its work rather than handing you a bare number. When you want the reasoning behind a result, the explanation sits directly under the tool you just used, so you can check the inputs that mattered and change them. No signup, no account, no paywall on the arithmetic.

Built for the long grind

Games change and so do we: values are checked against the current game versions, and new games get new toolkits as they launch. Requests shape what gets built next, because the most useful calculators tend to be the ones somebody asked for after hitting the same wall twice. Where a figure depends on a regional code — Robux pricing is the obvious example — the tool lets you override it instead of silently assuming one jurisdiction.

Why the numbers move

Three things make a calculator answer change under you, and it is worth knowing which one bit you. A game update can rewrite a formula outright; Minecraft has changed its enchanting and trading economy more than once. A platform policy change moves payout rates — the DevEx rate has been revised, and the current standard rate applies only to Robux earned on or after 5 September 2025. And your own inputs matter more than people expect: telling a crop calculator that 12 growing days remain instead of 28 changes the entire ranking, because plantings that cannot mature are refused rather than counted.

Private and instant

All of it happens on your own device. Nothing you type is uploaded, there is no account and no tracking script; you change an input and the answer updates immediately, and the page keeps working offline once it has loaded. That design is also why the numbers are trustworthy: there is no server-side table to go stale, only equations evaluated at the moment you ask.

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