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LEGO Missing Piece Checker

Rule out the usual hiding places first. If the piece really is gone, check the set piece by piece and leave with the element ID LEGO asks for, or a link to buy the part.

Birthday Cake

Checking

40780 Birthday Cake

156 pieces in 44 part and color combinations, plus 1 minifigure.

The official piece count includes the 4 parts inside the set's minifigures, which this inventory lists separately. Spare parts are counted in neither figure.

Before you call it missing

Builders who report a missing piece often find it in one of these places. Tick each one off as you look.

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Piece checklist

Reddish Brown 55 pieces

  • Hinge Brick 1 x 2 Base Reddish Brown Part 3937 Element 6186045 or 4541234 ×2
  • Hinge Brick 2 x 2 Top Plate Thin Reddish Brown Part 6134 Element 6167644 or 4541230 ×2
  • Hinge Plate 1 x 4 Swivel Top / Base - Hollow Clip [Complete Assembly] Reddish Brown Part 1927 Element 6416695 ×1
  • Plate 1 x 4 Reddish Brown Part 3710 Element 4211190 ×2
  • Plate 1 x 8 Reddish Brown Part 3460 Element 4216945 ×2
  • Plate 2 x 3 Reddish Brown Part 3021 Element 4211189 ×2
  • Plate Round Corner 3 x 3 Reddish Brown Part 30357 Element 4283660 ×8
  • Plate Special 1 x 2 Rounded with 2 Open Studs Reddish Brown Part 35480 Element 6248944 ×6
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Reddish Brown Part 15573 Element 6092590 ×2
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Reddish Brown Part 87580 Element 4565394 ×2
  • Plate Special Round 2 x 2 with Center Stud (Jumper Plate) Reddish Brown Part 18674 Element 6102360 ×2
  • Tile 1 x 1 with Groove Reddish Brown Part 3070b Element 4211288 1 spare in the box ×6
  • Tile 2 x 2 Curved, Macaroni Reddish Brown Part 27925 Element 6342958 ×4
  • Tile Round 1 x 1 Half Circle Reddish Brown Part 24246 Element 6328180 1 spare in the box ×14

White 27 pieces

  • Brick 2 x 2 White Part 3003 Element 6552095 or 6548256 ×2
  • Brick Round Curved 1 x 1 x 1 1/3 Quarter Dome White Part 1871 Element 6442360 ×20
  • Hinge Plate 1 x 4 Swivel Top / Base - Hollow Clip [Complete Assembly] White Part 1927 Element 6497109 or 6416527 ×1
  • Plate 3 x 3 White Part 11212 Element 6552153 or 6104805 ×4

Yellow 24 pieces

  • Brick 1 x 1 Yellow Part 3005 Element 300524 ×6
  • Brick 1 x 2 Yellow Part 3004 Element 4613966 or 300424 ×6
  • Brick 1 x 6 Yellow Part 3009 Element 300924 ×4
  • Brick Special 1 x 1 with Stud on 1 Side Yellow Part 87087 Element 4624985 ×2
  • Brick Special 1 x 2 with 2 Studs on 1 Side Yellow Part 11211 Element 6119197 ×6

Lime 15 pieces

  • Brick 1 x 1 Lime Part 3005 Element 4220634 or 4122446 ×1
  • Hair Mid Length, Parted Lime Part 3277 Element 6445387 ×1
  • Plate 1 x 3 Lime Part 3623 Element 4534664 or 4271564 ×2
  • Plate 1 x 6 Lime Part 3666 Element 4534665 or 4529160 ×2
  • Plate 2 x 4 Lime Part 3020 Element 4537936 or 4534667 ×2
  • Plate Round 1 x 1 with Solid Stud Lime Part 6141 Element 4183133 1 spare in the box ×3
  • Plate Round Corner 4 x 4 Lime Part 30565 Element 4504705 ×4

Bright Light Yellow 12 pieces

  • Brick 1 x 3 Bright Light Yellow Part 3622 Element 6201646 ×8
  • Brick 1 x 4 Bright Light Yellow Part 3010 Element 6036232 or 6014506 ×4

Medium Azure 6 pieces

  • Brick Curved 1 x 1 x 2/3 Double Curved Top, No Studs Medium Azure Part 49307 Element 6337982 ×3
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Medium Azure Part 87580 Element 6126090 or 6003008 ×3

Tan 5 pieces

  • Cone 1 x 1 [Top Groove] Tan Part 59900 Element 4529237 ×1
  • Plate 2 x 3 Tan Part 3021 Element 4118790 or 302105 ×1
  • Tile Special 1 x 2 with Sloped Walls AKA Money / Gold Bar [Ingot] Tan Part 99563 Element 6271228 ×3

Coral 3 pieces

  • Tile Round 1 x 1 Half Circle Coral Part 24246 Element 6475308 or 6341396 1 spare in the box ×3

Dark Pink 3 pieces

  • Plant, Flower, Plate Round 1 x 1 with 5 Petals Dark Pink Part 24866 Element 6209679 1 spare in the box ×2
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Dark Pink Part 4032a Element 6326495 ×1

Yellowish Green 3 pieces

  • Tile 1 x 1 with Groove Yellowish Green Part 3070b Element 6304896 1 spare in the box ×3

Bright Light Orange 1 piece

  • Plate Round Corner 3 x 3 with 2 x 2 Round Cutout Bright Light Orange Part 68568 Element 6525014 ×1

Orange 1 piece

  • Plate Round Corner 3 x 3 Orange Part 30357 Element 6220713 ×1

Trans-Orange 1 piece

  • Wave / Flame Small with Pin Trans-Orange Part 37775 Element 6514274 or 6357747 1 spare in the box ×1

Minifigures 1 figure

  • Birthday Girl Minifigure, checked as a whole figure ×1

Tick each piece as you find it, or mark it missing.

When a piece really is missing

Ask LEGO

LEGO takes requests for pieces missing from a new set through its customer service site. The form asks for the set number and each piece's element ID, the number printed beside the piece in the parts list at the back of the instructions. This checker lists both.

Request a replacement from LEGO

Buy the piece

Mark a piece missing and your list links it to an eBay search for that part, which also covers pieces from older or second-hand sets.

Keep a record

Copy or download your missing list (the CSV opens in any spreadsheet), or print the whole checklist and tick pieces off on paper. Your marks stay in this browser, so you can check a big set over several sittings.

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