Estimate kelp farm profit based on current DonutSMP market prices • Compare Farms easily
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Donut Investing
Skeleton Spawner Calc
DonutSMP · Prices auto-updated from Trusted Discord Servers
01 // Farm Configuration
Farm A
Farm B
02 // Market Prices using defaults: bone 500 · blaze 150 · kelp 750
Bone Block Price
Blaze Rod Price
Kelp Block Sell Price
03 // Runtime
Runtime (hours)
04 // Production Output
Kelp Blocks Produced
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Bone Blocks Used
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Blaze Rods Used
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05 // Cost Breakdown
Bone Block Cost
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Blaze Rod Cost
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Total Cost
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06 // Revenue & Profit
Revenue
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Net Profit
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Break-even time
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TIME UNTIL COSTS COVERED
04 // Farm Comparison
Farm A
Kelp/hr—
Bone/hr—
Blaze/hr—
Total Cost—
cost/hr—
Revenue—
revenue/hr—
Profit—
Profit/hr—
Break-even—
▲ BETTER PROFIT
Farm B
Kelp/hr—
Bone/hr—
Blaze/hr—
Total Cost—
cost/hr—
Revenue—
revenue/hr—
Profit—
Profit/hr—
Break-even—
▲ BETTER PROFIT
Best Farms For You
Enter your balance and max spend — we'll find your top 3 farms by profit over 12 hours
Your Balance
Max % to Spend
Live Spawner Price
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S1 // Your Setup
Total Spawners
Number of Piles
Splits spawners evenly across piles
AFK Hours / Day
Leave blank for 24h
S2 // Prices Optional — enables revenue & ROI
Bone Sell Price ($ / bone)
Unlocks revenue calculation
Spawner Cost ($ each)
Unlocks ROI / breakeven
S3 // Production Output
Bones / Min
—
Bones / Hour
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Bones / Day
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Total Spawners
—
bpm = 2.03 × n^0.984
S4 // Revenue & Profit
Revenue / Hour
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Revenue / Day
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ROI Breakeven
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REVENUE / DAY
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REVENUE / MONTH (30 days)
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S5 // Spawner Purchase Calculator
Required
Price Per Spawner
Choose One
How Many Spawners
I know the quantity I want
OR
My Budget
How many can I afford?
Optional — unlocks payback & revenue
Bone Sell Price ($ per bone)
Defaults to $170/bone if left blank
Total Cost
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Spawners
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Cost Per Spawner
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Bones Per Day (BPD)
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PAYBACK TIME
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REVENUE / DAY (24H)
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Revenue / Hour
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Revenue / Month
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Cost Per Bone Produced*
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*amortised over 30 days
⬡ About Donut Investing
Donut Investing is a community tool built for DonutSMP players to make smarter economy decisions.
Spawner prices are automatically pulled from Discord trading channels daily and updated here — so the numbers you see reflect real current market rates.
Kelp farm data is sourced from community-verified farm builds. All calculations run in your browser.
Auto price updatesCommunity dataNo accounts · No tracking
📐 Spawner Formula
Prices derived from DonutSMP spawner data.
bpm = 2.03 × n^0.98427
Slightly sub-linear power law — each additional spawner contributes marginally less than the last.