Free DIY calculators.
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Practical tools to make your DIY projects easier.
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Plan a project and we'll suggest the right calculators, materials, and tools for it.
Tools — pick your project type
Cabinet Hardware Placement
Exactly where to drill for knobs and pulls.
Closet & Pantry Planner
Standard rod and shelf heights, plus the brackets to hold them.
Curtain Calculator
How many panels, how wide a rod, and how high to hang it.
Picture Hanging Calculator
Museum-height nail placement and evenly spaced gallery rows.
Recessed Lighting Layout
How many can lights, how far apart, and how far off the wall.
Rug Size Calculator
The right standard rug size for your room, table, or bed.
Shelf Spacing Calculator
Equal openings between shelves, plus bracket counts.
Shelf Weight Capacity
How much a shelf can hold before it pulls out of the wall.
TV Mounting Height
Bracket height for a screen centered at eye level.
Board and Batten Calculator
Plan board & batten or picture frame wainscoting with spacing and cut lists.
Board Spacing Calculator
Figure out equal gaps for vertical board accent walls.
Detail Trim Calculator
Calculate linear feet and board count for baseboard, crown, and casings.
Drywall Calculator
Sheets, mud, tape, and screws for a room.