LEGO · Buying and selling bulk
LEGO bulk lot value calculator.
Enter the lot’s weight and price, weigh a sample of your own parts, and the calculator turns that into an estimated piece count and a price per pound, per kilo and per piece. It follows the method a Eurobricks member gave for weights: count 50 parts and weigh them. Example: a 5 lb lot at $40 whose 50-part sample weighs 85 g (1.7 g a part) holds about 1,334 pieces and costs $8.00 a lb, or $6.20 a lb once three minifigures are valued at $3 each.
Your numbers
Result
Working out the result.
How the bulk lot value is calculated
Weight is the only thing a seller can state about a loose lot with confidence, so the page starts there. It converts your weight to grams (1 lb = 453.59237 g), then divides by the average weight of one part to estimate how many pieces you are getting. You do not have to guess that average. A Eurobricks member explaining how to estimate weights wrote: “Count 50 parts, weigh them.” Enter the count and the weight of your sample and the page divides one by the other.
The price checks are plain division: price over pounds, price over kilograms, and price over the estimated pieces. Minifigures usually carry most of a lot’s resale value, so there is a separate credit: the number of figures times the value you give each is taken off the price, and the remainder is what you are really paying for the loose parts. That net price per lb is then compared with the range you enter. The page does not hold a price list or look anything up; every price is yours.
Worked example with real numbers
- The lot. 5 lb is 2,268 g. A 50-part sample weighing 85 g gives 1.7 g a part, so the estimate is 2,268 ÷ 1.7 = about 1,334 pieces.
- The price. $40 for 5 lb is $8.00 a lb, $17.64 a kg and about 3.0 cents a piece.
- The minifigures. Three figures at $3 each is $9, leaving $31 for the parts: $6.20 a lb and 2.3 cents a piece, inside a $5 to $7 range. Without the credit the same lot would look dear at $8.00 a lb.
- Reference range. $5 to $7 a lb on 5 lb is $25 to $35 for the whole lot.
Why the average part weight swings the count
BrickLink’s catalogue lists a weight for every part. The five below show how wide the spread is, and what that does to the pieces in one pound. A lot of small plates and tiles holds several times more pieces than a lot of big bricks of the same weight.
| Part (BrickLink number) | Weight | Of this part alone, per lb |
|---|---|---|
| Tile, Round 1 x 1 (98138) | 0.11 g | 4,124 |
| Plate 1 x 1 (3024) | 0.2 g | 2,268 |
| Brick 1 x 1 (3005) | 0.44 g | 1,031 |
| Plate 2 x 4 (3020) | 1.2 g | 378 |
| Brick 2 x 4 (3001) | 2.32 g | 196 |
A figure of about 325 pieces per pound is often repeated in forums. We could not find it in the threads we read, so this page does not use it. It would imply 1.40 g a part, which a sample weighing 70 g for 50 parts reproduces; weigh your own to see whether your lot looks like that.
What this calculator leaves out
It estimates a count from an average, so a lot with a few large pieces and many small ones can be off in either direction, and a sample of 50 is a sample. It does not account for dirt, water, non-LEGO parts, Duplo or Technic pieces mixed in, damaged parts, or the value of rare elements. Minifigure and rare-part values are your inputs and are the biggest source of error in any resale estimate. Fan-made tool, not affiliated with the LEGO Group.
Common mix-ups
-
Often assumedA pound of LEGO is a fixed number of pieces, so any lot can be counted from its weight.
What the source saysThe catalogue weights differ enormously: a 2 x 4 brick is listed at 2.32 g and a round 1 x 1 tile at 0.11 g, so a pound of the first alone is about 196 pieces and of the second about 4,124. [1] [2]
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Often assumedA low price per pound always means a bargain.
What the source saysPosters in a Eurobricks thread quote $5 to $7 a pound for general bricks and $8 to $12 for the best Star Wars lots, so the same weight can carry very different value depending on what is in it. [3]
- BrickLink catalogue: Brick 2 x 4 (3001)
- BrickLink catalogue: Tile, Round 1 x 1 (98138)
- Eurobricks: how much are bricks worth per pound
Checked against these sources on .
Frequently asked questions
How many LEGO pieces are in a pound?
It depends on the parts. Using BrickLink catalogue weights, a pound holds about 196 of the 2 x 4 brick alone, 378 of the 2 x 4 plate, 1,031 of the 1 x 1 brick and 2,268 of the 1 x 1 plate. For a real lot, weigh 50 parts and divide; this calculator does that.
How do I estimate the number of pieces in a bulk lot?
Weigh the whole lot, then count out 50 parts at random and weigh those, as a Eurobricks member advised. Divide the sample weight by 50 for grams a part and divide the lot weight by that number. For 2,268 g and 1.7 g a part the answer is about 1,334 pieces.
What is a fair price per pound for a LEGO bulk lot?
It moves with the market, the mix and the minifigures, so check recent sold listings for lots like yours. One older Eurobricks post put general bricks at $5 to $7 a pound on eBay and the best Star Wars lots at $8 to $12. Treat that as history, not a price list.
Should I count minifigures separately?
Yes. They often carry most of a lot’s resale value, so give each one a value from sold listings and subtract the total from the price. The calculator then shows the price per pound of the loose parts on their own.
Why does my piece count differ from the seller’s?
Sellers who quote a count are usually estimating from weight too, or counting by hand. A lot weighing the same can hold very different counts depending on whether it is mostly small plates or large bricks, as the part-weight table above shows.
Does this work for Duplo or other brands?
The method of dividing weight by an average part weight works for any parts, but the part weights quoted on this page are for standard bricks and plates. Weigh a sample from your own lot to get an average that fits.
Sources
Retrieved
- BrickLink catalogue: Brick 2 x 4 (3001) — 2.32 g (read 2026-10-26)
- BrickLink catalogue: Brick 1 x 1 (3005) — 0.44 g (read 2026-10-26)
- BrickLink catalogue: Plate 2 x 4 (3020) — 1.2 g (read 2026-10-26)
- BrickLink catalogue: Plate 1 x 1 (3024) — 0.2 g (read 2026-10-26)
- BrickLink catalogue: Tile, Round 1 x 1 (98138) — 0.11 g (read 2026-10-26)
- Eurobricks: weight of various lego elements — “Count 50 parts, weigh them.” (sampling method) (read 2026-10-26)
- Eurobricks: how much are bricks worth per pound — posters quote $5 to $7 a pound for general bricks on eBay and $8 to $12 for the best Star Wars lots; undated, treat as history (read 2026-10-26)
Fan-made estimator, prices are your own inputs
Not affiliated with, sponsored or endorsed by the LEGO Group. LEGO is a trademark of the LEGO Group. Piece counts are estimates from weight and sample averages. Nothing you type is sent or stored.