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hobby calculator
Lego Valuation Calculator
Estimate the cost per part and average resale value of Lego brick sets to know what your collection is really worth today.
Cost per part is set price divided by piece count, and around 10 cents is a common benchmark for a fairly priced set. This tool also models a set's worth as parts × $0.10 plus minifigures × $4.50, grown at 3%, 5% or 8% a year for standard, licensed or exclusive themes. A $120 set with 950 parts costs 12.6 cents per part; with 5 minifigures it models at $117.50 today and $136.21 after 5 years at 3%. All three rates are editable planning defaults, not market data.
Quick actions: Save inputs, view saved runs, print, share, or export results
Inputs
Set Profile & Presets
Set Size Preset
Theme Type Preset
Specifications
$
parts
figs
Your assumptions
These two are not market quotes and no published figure sets them. The defaults are the collector rule of thumb; change them to match comparables you have actually looked up on BrickLink or eBay sold listings.
$
$
Results
Estimated Collector Value
$117.50
Price Per Part (Actual)12.6¢
Appreciation Rate (Estimated)3% / year
Projected Value in 5 Years$136.21
Tip
Save this page to compare collector sets, evaluate sealed inventory, and benchmark resale or long-term appreciation scenarios.
Summary
Key output metrics
Estimated Value
$117.50
Based on parts + minifigures
Price Per Part
12.6¢
Avg: 10-12¢ per part
Appreciation
3% / yr
standard theme rate
5-Year Projection
$136.21
Compound growth estimate
Trend
Projected Value Growth (10 Years)
Estimated future value using compound appreciation based on the selected theme type.
| Item | Value |
|---|---|
| Year 0 | $118 |
| Year 1 | $121 |
| Year 2 | $125 |
| Year 3 | $128 |
| Year 4 | $132 |
| Year 5 | $136 |
| Year 6 | $140 |
| Year 7 | $145 |
| Year 8 | $149 |
| Year 9 | $153 |
| Year 10 | $158 |
Guide
How to understand and use this calculator
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Price-per-part and estimated MSRP worth
One of the simplest reference metrics is price per part. It is computed as set price divided by total part count. Lower price-per-part values often indicate stronger immediate value, though this metric alone does not account for unique molds, printed elements, or valuable minifigures. A rough collectible worksheet often pairs part value with a separate minifigure contribution to build an estimated set worth baseline.
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Theme multipliers and appreciation assumptions
Three numbers drive the estimate on this page, and none of them is a published figure: the value assigned to each part, the value assigned to each minifigure, and the annual growth rate attached to each theme category. They are this tool's starting assumptions, chosen to be reasonable, and two of them are editable directly in the calculator.
That is deliberate rather than a limitation. There is no authority that states what a LEGO part is worth, and any site quoting one to two decimal places is quoting a rule of thumb with a confident face on it. The useful version of this tool is one where you put in figures drawn from comparable sets you have actually looked up, so the output is your model rather than ours.
Where to get those figures: BrickLink's price guide shows six-month sold averages for sets and for individual parts and figures, and eBay's completed listings show what buyers actually paid, including for sealed copies. Both are more reliable than any single per-part number, including the one this page starts with.
The theme growth rates work the same way. Exclusive and licensed themes have historically held value better than mass-market lines, which is why the tool separates them, but the specific percentages are scenario inputs rather than forecasts. Treat the ten-year projection as a what-if, not a prediction.
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Why long-term projections are only scenarios
Future collectible values are never guaranteed. Re-releases, market saturation, damaged packaging, and demand shifts can all change realized resale value. A projection therefore should be treated as a scenario model rather than a promise. The main value of the calculator is comparative: it helps identify which assumptions make one set stronger than another.
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How this LEGO price guide compares to BrickEconomy and BrickLink
Marketplace-data tools like BrickEconomy and BrickLink's price guide pull live sold-listing averages across dozens of marketplaces, which makes them the best source for a specific set's current going rate at this exact moment. This LEGO valuation calculator does something different: it is a transparent, formula-based estimator you can reason about and adjust yourself, using price-per-part, a minifigure heuristic, and theme-based scenario rates instead of a black-box market average. Use marketplace-data tools to check today's price; use this calculator to compare sets against each other and to model future scenarios using assumptions you can see and adjust.
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Using this as a LEGO appraisal or insurance-value starting point
Collectors occasionally need a documented value estimate for insurance riders or homeowner's policy scheduling on a large LEGO collection, not just for buying or selling decisions. This calculator's price-per-part and theme-adjusted output gives a defensible starting estimate for that purpose, though most insurers will ultimately want a value supported by recent comparable sold listings (BrickLink, BrickEconomy, or eBay sold data) rather than a heuristic estimate alone. Treat the calculator's number as your first-pass documentation baseline, then attach supporting sold-price comps for anything you plan to actually schedule on a policy.
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Reading retirement and scarcity signals before you buy or value a set
A set's official LEGO.com availability status is one of the clearest scarcity signals: currently available, recently retired (within about a year), or long-retired all carry different demand dynamics. Recently retired sets often see their steepest single value jump in the first twelve months after leaving shelves, while long-retired sets have usually settled into a steadier, slower appreciation curve. When you value a set with this calculator, check its current retail availability status first: a 'still in stores' set valued with an aggressive theme-appreciation assumption will overstate near-term value, since scarcity has not actually kicked in yet.
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A Worked Example, Start to Finish
Take a licensed set at $79.99 with 1,034 pieces and 4 minifigures, left sealed, and run it through with the calculator's default assumptions.
| Step | Working | Result |
|---|---|---|
| Price per part | $79.99 ÷ 1,034 | 7.74¢ |
| Brick value | 1,034 × $0.10 | $103.40 |
| Minifigure value | 4 × $4.50 | $18.00 |
| Component worth | $103.40 + $18.00 | $121.40 |
| Licensed growth rate | default for the theme | 5% a year |
| Scenario value at 5 years | $121.40 × 1.05^5 | $154.94 |
Two things are worth drawing out of that. The set bought at $79.99 already carries $121.40 of component worth on these assumptions, and $103.40 of it is bricks rather than figures. That is the opposite of the usual collector intuition, and it is entirely a consequence of a 1,034-piece count. A set with the same price and a third of the pieces but eight exclusive figures would land in a very different place.
Second, the $154.94 is a scenario, not a forecast. It is what $121.40 becomes at 5% a year, nothing more. Change the growth assumption to 3% and it is $140.74; change it to 8% and it is $178.38. The spread between those is wider than most of the decisions people use this number for, which is why the calculator exposes the assumption as an input rather than burying it.
If you only want the first row of that table, the LEGO price per piece calculator does it properly: it works from the price you actually pay after discount, tax and shipping, and it can take the minifigures out before dividing.
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Related Calculators
Working out whether a set is a good buy rather than what it is worth? That is a different question and it has its own tool: the LEGO price per piece calculator works from the price you will actually pay and compares it against a benchmark you set.
Valuing a bulk bin or loose-parts lot instead of a complete set? The bulk LEGO price per pound calculator prices lots by weight and condition. Pricing a figure on its own? Use the LEGO minifigure value calculator. Actually selling? The LEGO resale ROI calculator shows what you keep after marketplace fees and shipping.
For the background reading, how much is my LEGO collection worth is a decision tree for sealed sets, built sets, loose bricks and figures, and is LEGO a good investment covers what the published research actually found.
For the other major collectible category with a formal condition scale, the vinyl record grading value estimator applies the Goldmine grade percentages to a Near Mint guide price.
Related concepts
Price per part
A baseline value metric comparing set price to total piece count.
Collector premium
The extra resale value created by rarity, exclusivity, or sealed condition.
Retired set
A set no longer in active production and therefore potentially scarcer in the market.
Scarcity signal
An indicator (retirement status, licensing expiration, production run) suggesting future supply constraints.
MSRP anchor
The original manufacturer's suggested retail price, used as the baseline before appreciation or depreciation is applied.
Frequently Asked Questions
What is price per part?+
It is the price divided by the total number of pieces in the set, usually quoted in cents. The number collectors carry in their heads as a fair benchmark is around 10 cents a piece, which is a rule of thumb rather than a published figure. Meaningfully below it is usually a good buy, and meaningfully above it usually means you are paying for a licence, a small production run, or minifigures.
Why do minifigures matter so much?+
Unique or desirable minifigures often carry high secondary-market value and can materially change total set worth.
Do licensed themes appreciate more?+
Often yes, because demand can remain strong after retirement, especially for iconic franchises.
Can a low price-per-part set still be a poor investment?+
Yes. Price per part is useful but incomplete. Theme demand, rarity, and condition matter too.
Why is sealed-box condition important?+
Collectors often pay premium prices for unopened sets in strong packaging condition.
How should I interpret a 5-year value projection?+
As a scenario, not a forecast. It is simply what today’s component worth becomes at the growth rate you chose, and changing that rate moves the answer more than most of the decisions people use it for. Real resale prices depend on demand, reissues, collector interest and how well the box survives, none of which any growth rate knows about.
Are retired sets always valuable?+
No. Retirement can increase scarcity, but demand still determines whether prices actually rise.
Can this help with buying decisions at launch?+
Yes. It can help compare immediate value, collectible profile, and long-term scenario assumptions across sets.
How is this different from BrickEconomy's value estimate?+
BrickEconomy pulls live sold-listing data from dozens of marketplaces for a current market snapshot. This calculator is a transparent formula (price per part, minifigure heuristic, theme scenario rate) you can see and adjust, better suited for comparing sets and modeling scenarios than for checking today's exact going rate.
Can I use this to get a value for insurance purposes?+
It can serve as a documented starting estimate, but most insurers prefer a value backed by recent sold comparables from BrickLink, BrickEconomy, or eBay sold listings in addition to a heuristic calculator estimate.
Does it matter if a set is still available in stores?+
Yes. Scarcity-driven appreciation generally has not started yet for a set still on shelves. Recently retired sets often see their sharpest value increase in the first year after retirement, while long-retired sets settle into a slower curve.
How much is my LEGO worth if I do not know the exact part count?+
Check the set's official box or LEGO.com listing for the piece count, or use a set-number lookup on a database like Rebrickable or BrickLink if you no longer have the box.
Does the calculator account for box or packaging damage?+
No. The estimate assumes a baseline condition. Box damage, missing pieces, or sun fading should be factored in separately as a discount to the calculator's output.
Can I value a MOC (custom, non-official build) with this tool?+
Not directly. The theme and appreciation assumptions are built around official retail sets; a custom build has no comparable retirement or collector-demand pattern to model against.
Is the price-per-part benchmark the same across all regions and currencies?+
The 10-12 cent benchmark reflects USD pricing norms. Convert your local price to USD, or treat the benchmark as directional rather than an exact regional standard.
Formula
LEGO Valuation Formula
MSRP Worth = (Total Parts × $0.10) + (Minifigures × $4.50)Projected value uses compound interest based on theme type appreciation rates (standard: 3%, licensed: 5%, exclusive: 8%).
Step by step
How the calculation works
- 1Enter the set price, part count, and minifigure count.
- 2Choose the theme classification to apply different appreciation assumptions.
- 3Compare actual price-per-part against collector heuristics.
- 4Review the future value chart as a scenario estimate, not a guaranteed resale result.
Related guides
Learn more about this calculation
Guide
How Much Is My LEGO Collection Worth?
A decision tree for valuing a LEGO collection: sealed sets, built sets, loose bricks and minifigures each need a different method, and adding them up wrongly is the usual mistake.
Guide
Is LEGO a Good Investment? What the Research Shows
What the published research says about Lego secondary-market returns, which themes actually hold value, and how to separate real investment math from collector hype.
Guide
What a Good LEGO Price Per Piece Actually Is
Price per piece is the most-quoted Lego value metric and one of the most misleading. Here is what it actually measures, where it breaks down, and a better framework for comparing sets.