Modern Platform Bed Frame [All Sizes]

Submitted by Ana White on Tue, 09/10/2019 - 12:33
Difficulty
Beginner
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Get that mattress up off the floor in style, for about the cost of buying a box spring. Our free plans make it easy.  Step by step diagrams, shopping list and cut list from Ana White

Can be used without a headboard, or pair the king sizes with our Modern Geo Headboard.

modern platform bed frame
modern platform bed frame
modern platform bed frame with modern geo headboard

Do I need a box spring?

No, with the slatted system, you do NOT need a box spring.

You can use a box spring with this plan, just make sure the box spring dimensions fit the dimensions of the bed.

 

How do I cut the boards?

You can cut the boards using a circular saw with an all purpose or wood blade.  The blade that comes with a circular saw is usually designed for cutting wood.  It is very important to get nice straight cuts - use a straight edge or carpenter's square as a guide.  A miter saw (if you have one) would be a better alternative than a circular saw.

 

What type of screws do I need?

We recommend a self tapping wood screw, with a torque head (like these from Amazon (affiliate link) with included torque head bit).  Look for a #9 or #8 in a 2-1/2" to 3" length for the longer screws.  

For screwing down slats, you can use a much smaller screw.  Try a #7 or #8 in a 1-1/2" or 2" length (example from Amazon (affiliate link) in the #7 size)

Dimensions
modern platform bed frame dimensions
Dimensions diagram shown above - 3" larger in width and length than your mattress

Preparation

Shopping List

TWIN BED FRAME SHOPPING LIST (38" x 75")

  • 3 - 2x6 @ 8 feet long or 92-5/8" stud length
  • 3 - 2x4 @ 8 feet long
  • 6 - 1x3 furring strips
  • 40 - 2-1/2" self tapping wood screws
  • 25 - 2" self tapping wood screws (for screwing mattress slats down
  • 6" or 8" hairpin legs with screws for attaching (Amazon affiliate link to 6" hairpin legs)

FULL BED FRAME SHOPPING LIST (54" x 75")

  • 2 - 2x6 @ 12 feet long (can cut into 5' and 7' pieces to transport)
  • 4 - 2x4 @ 8 feet long
  • 7 - 1x3 @ 8 feet long
  • 50 - 2-1/2" self tapping wood screws
  • 50 - 2" self tapping wood screws (for screwing mattress slats down
  • 6" or 8" hairpin legs with screws for attaching (Amazon affiliate link to 6" hairpin legs)

QUEEN BED FRAME SHOPPING LIST (60" x 80")

  • 2 - 2x6 @ 12 feet long (can cut into 80" and 64" pieces to transport)
  • 4 - 2x4 @ 8 feet long
  • 7 - 1x3 @ 8 feet long
  • 50 - 2-1/2" self tapping wood screws
  • 50 - 2" self tapping wood screws (for screwing mattress slats down
  • 6" or 8" hairpin legs with screws for attaching (Amazon affiliate link to 6" hairpin legs)

STANDARD KING BED FRAME SHOPPING LIST (76" x 80")

  • 4 - 2x6 @ 8 feet or 92-5/8" stud length
  • 5 - 2x4 @ 8 feet long
  • 13 - 1x3 @ 8 feet long
  • 60 - 2-1/2" self tapping wood screws
  • 50 - 2" self tapping wood screws (for screwing mattress slats down
  • 6" or 8" hairpin legs with screws for attaching (Amazon affiliate link to 6" hairpin legs)

CALIFORNIA KING BED FRAME SHOPPING LIST (72" x 84")

  • 4 - 2x6 @ 8 feet or 92-5/8" stud length
  • 5 - 2x4 @ 8 feet long
  • 14 - 1x3 @ 8 feet long
  • 60 - 2-1/2" self tapping wood screws
  • 50 - 2" self tapping wood screws (for screwing mattress slats down
  • 6" or 8" hairpin legs with screws for attaching (Amazon affiliate link to 6" hairpin legs)
Cut List

TWIN BED FRAME CUT LIST (38" x 75")

  • 2 - 2x6 @ 75" - Siderails
  • 2 - 2x4 @ 75" - Center Supports
  • 2 - 2x6 @ 41" - Top and Bottom
  • 4 - 2x4 @ 24" - Ends cut at 45 degrees bevel, ends NOT parallel, long point to long point measurement (optional)
  • 12 - 1x3 @ 38" - slats

FULL BED FRAME CUT LIST (54" x 75")

  • 2 - 2x6 @ 75" - Siderails
  • 3 - 2x4 @ 75" - Center Supports
  • 2 - 2x6 @ 57" - Top and Bottom
  • 4 - 2x4 @ 24" - Ends cut at 45 degrees bevel, ends NOT parallel, long point to long point measurement (optional)
  • 2 - 2x4 @ 9-1/2" (center legs) for 6" hairpin legs (for 8" hairpin legs, cut at 11-1/2" long
  • 21 - 1x3 @ 32" - slats

QUEEN BED FRAME CUT LIST (60" x 80")

  • 2 - 2x6 @ 80" - Siderails
  • 3 - 2x4 @ 80" - Center Supports
  • 2 - 2x6 @ 63" - Top and Bottom
  • 4 - 2x4 @ 24" - Ends cut at 45 degrees bevel, ends NOT parallel, long point to long point measurement (optional)
  • 2 - 2x4 @ 9-1/2" (center legs) for 6" hairpin legs (for 8" hairpin legs, cut at 11-1/2" long
  • 21 - 1x3 @ 32" - slats

STANDARD KING BED FRAME CUT LIST (76" x 80")

  • 2 - 2x6 @ 80" - Siderails
  • 4 - 2x4 @ 80" - Center Supports
  • 2 - 2x6 @ 79" - Top and Bottom
  • 4 - 2x4 @ 24" - Ends cut at 45 degrees bevel, ends NOT parallel, long point to long point measurement (optional)
  • 2 - 2x4 @ 9-1/2" (center legs) for 6" hairpin legs (for 8" hairpin legs, cut at 11-1/2" long
  • 13 - 1x3 @ 76" - slats

CALIFORNIA KING BED FRAME CUT LIST (72" x 84")

  • 2 - 2x6 @ 84" - Siderails
  • 4 - 2x4 @ 84" - Center Supports
  • 2 - 2x6 @ 75" - Top and Bottom
  • 4 - 2x4 @ 24" - Ends cut at 45 degrees bevel, ends NOT parallel, long point to long point measurement (optional)
  • 2 - 2x4 @ 9-1/2" (center legs) for 6" hairpin legs (for 8" hairpin legs, cut at 11-1/2" long
  • 14 - 1x3 @ 72" - slats
Tools
Tape Measure
Speed Square
Pencil
Safety Glasses
Hearing Protection
Drill
Circular Saw
Power Sander
General Instructions

TIP: Paint or stain the 2x6 boards prior to assembly.  They are the only boards that need a finish.

Instructions

Step 1

modern platform bed frame

Lay the 2x6, best side down, on your work surface of the floor.

Place a 2x4 on top, bottom and end edges flush.

Attach with 2-1/2" self tapping wood screws.

Step 2

modern platform bed frame

Screw the remaining 2x6s to the ends of your siderails, with the 2-1/2" self tapping wood screws.

Step 3

modern platform bed frame

Add center supports - 

  • none needed for twin
  • one for full and queen
  • two for kings

Use 2-1/2" self tapping wood screws to attach

Step 4

modern platform bed frame

Attached the hairpin legs to the bottom of the bed.

Step 5

modern platform bed frame

Angled supports can help strengthen up your bed and will help it last longer (but not required)

Cut the angles at 45 degrees with either a miter saw or setting your circular saw blade to 45 degree bevel and cutting.

Make sure your bed frame is square by taking opposite diagonals, and adjusting the bed until the diagonals match.

Attach with 2-1/2" self tapping screws.

Step 6

modern platform bed frame

Add center legs to the center supports.  You may wish to measure and cut to height - as the hairpin legs may be slightly taller or shorter than advertised.

Step 7

modern platform bed frame

Lay slats down in the bed, about 4" apart.

For the full and queen slats, alternate as done here (this reduces waste and conserves lumber)

Screw down with the shorter screws.

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