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Some of the most useful home decisions come down to a tape measure and a rule of thumb: how big the rug should be, how high the TV goes, whether the island leaves enough room to walk. We built a set of free tools that do that math for you and draw the answer to scale.
They live on Nestique, our sister site for home design tools. Everything runs right in your browser, there’s no sign-up, and they work on your phone. Pick the room or project you’re working on and jump in.
In order to come up with the very specific design ideas, we create most designs with the assistance of state-of-the-art AI interior design software. Also, assume links that take you off the site are affiliate links such as links to Amazon. this means we may earn a commission if you buy something.
48. Bedroom Layout Planner
Wondering if a king bed will fit? This free planner draws your bedroom to scale and checks every walkway, nightstand and the door swing. It's the quickest way to find out whether you'll be shuffling sideways around the foot of the bed every morning.
Try the free Bedroom Layout Planner →
47. Room Layout Planner
Rearrange your room on a grid and get warnings for tight walkways before you move a thing. Try three or four arrangements in a few minutes instead of dragging the sofa across the floor all afternoon.
Try the free Room Layout Planner →
46. Rug Size Calculator
Tap through standard rug sizes and see which ones actually fit your room, drawn to scale. Most rooms look better with a rug that's bigger than you think, and this shows the difference to scale.
Try the free Rug Size Calculator →
45. Sofa Size Calculator
Compare loveseats, sofas and sectionals in your room, to scale, before you fall for one in the showroom. It's worth five minutes before you order, since sofas are one of the hardest things to send back.
Try the free Sofa Size Calculator →
44. Coffee Table Size Calculator
Get the right coffee table length, height and distance for your sofa. Getting the length and the gap right is what makes a living room feel easy to use.
Try the free Coffee Table Size Calculator →
What Our Readers Say
- Asked which rug they would buy to go under the coffee table, Home Stratosphere readers leaned slightly toward patterned, 54% to 45% for solid.
- When our readers voted on which coffee table they would buy, solid wood and upholstered were a coin toss, with glass well behind at 13%.
From Home Stratosphere reader polls and votes.
43. Dining Table Size Calculator
Get the right table size and shape for your dining room, and how many chairs really fit. Handy before the holidays, when you need to know whether the extra chairs will actually fit.
Try the free Dining Table Size Calculator →
42. Chandelier Height Calculator
Find out how high to hang a chandelier, what size to buy and how much chain you need. A chandelier that hangs too high is one of the most common lighting mistakes, and this takes the guesswork out.
Try the free Chandelier Height Calculator →
41. Recessed Lighting Layout Planner
Find out how many recessed lights your room needs, how far apart they go and how far from the walls. It helps you avoid the runway look of too many cans in a row, or dark corners from too few.
Try the free Recessed Lighting Layout Planner →
40. Ceiling Fan Size Calculator
Find the right fan size for your room, the downrod for your ceiling and how high the blades will hang. A fan that's too small for the room barely moves the air, so the size really matters.
Try the free Ceiling Fan Size Calculator →
39. BTU Calculator
Find the air conditioner size your room needs, plus the heater wattage, adjusted for sun, people and climate. Buying the right size unit means a cooler room and a lower power bill, not just a louder machine.
38. Closet Planner
Plan rods, shelves, drawers and shoe space, with the right rod heights and shelf spacing. Even a small reach-in closet holds a lot more once the rods and shelves are at the right heights.
37. Curtain Length Calculator
Pick your rod height and how you want them to fall, and get the exact panel length and count to buy. Hanging curtains higher and wider than the window is the easiest way to make a room feel taller.
Try the free Curtain Length Calculator →
36. TV Size Calculator
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Find the right TV size for how far you sit, and how high to hang it. It also shows how high to mount the screen, which is where most living rooms go wrong.
Try the free TV Size Calculator →
35. Wall Art Size Calculator
Find the right art size over your sofa, bed or mantel so it never looks too small. Art that's too small for the wall is one of the most common decorating mistakes, and it's easy to fix on paper first.
Try the free Wall Art Size Calculator →
For a big empty wall, 53% of our readers said they would choose one large piece, ahead of a gallery wall or a mirror.
34. Gallery Wall Planner
Lay out your frames to scale and get the exact nail spot for every one, without the extra holes. Plan it once on screen and you only make the holes you need.
Try the free Gallery Wall Planner →
33. Accent Wall Designer
Preview board and batten, shiplap or picture-frame molding on your wall, with exact spacing and a cut list. The cut list makes it a realistic weekend project instead of a guessing game at the lumber yard.
Try the free Accent Wall Designer →
32. Wainscoting Height Calculator
Compare wainscoting heights on your wall and see which one clears the windows and furniture. The right height depends on your windows and furniture, and this checks them for you.
Try the free Wainscoting Height Calculator →
31. Wallpaper Visualizer
Preview bold wallpaper on a wall with furniture for scale before you order it. Pattern scale is the thing that's hardest to judge from a sample, so seeing it on a full wall helps.
Try the free Wallpaper Visualizer →
30. Kitchen Layout Planner
Choosing between an L-shape, a U-shape or an island? This free planner draws your kitchen to scale and checks the work triangle and aisles. It's a good sanity check before you sit down with a kitchen designer or contractor.
Try the free Kitchen Layout Planner →
29. Kitchen Island Size Calculator
Find the biggest island your kitchen can take while keeping comfortable aisles, plus how many stools fit. An island that crowds the aisles makes a kitchen harder to cook in, no matter how good it looks.
Try the free Kitchen Island Size Calculator →
28. Pendant Light Spacing Calculator
Find out how many pendants fit over your island, where each one goes and how high to hang them. It takes the measuring tape and the guesswork out of one of the most visible choices in the kitchen.
Try the free Pendant Light Spacing Calculator →
27. Kitchen Cabinet Color Visualizer
Try sage lowers, a navy island or brass pulls on one kitchen before you buy a single quart of paint. It's a lot cheaper to change your mind on screen than after the second coat.
Try the free Kitchen Cabinet Color Visualizer →
26. Cabinet Hardware Placement Tool
See exactly where knobs and pulls go on your doors and drawers, with drilling measurements. Use it before you drill, since a crooked pull is hard to hide.
Try the free Cabinet Hardware Placement Tool →
25. Cabinet Pull Size Calculator
Find the right cabinet pull length for any drawer or door, shown to scale. Pulls that are too small can make expensive cabinets look cheap, and this sizes them to each drawer.
Try the free Cabinet Pull Size Calculator →
24. Backsplash Visualizer
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Try subway, herringbone or hex tile and different grout colors behind a counter, and get the tile count. It also gives you the tile count, so you know how much to order.
Try the free Backsplash Visualizer →
23. Bathroom Layout Planner
Wondering if a double vanity or a shower will fit? This free planner draws your bathroom to scale and checks every clearance. Bathrooms are where a few inches make the biggest difference, and this checks every clearance.
Try the free Bathroom Layout Planner →
22. Bathroom Vanity Size Calculator
Check whether a single or double vanity fits your wall without crowding the toilet or the door. Check it before you fall for a double vanity that leaves no room for the toilet.
Try the free Bathroom Vanity Size Calculator →
21. Vanity Mirror Size Calculator
Find out how wide your bathroom mirror should be, how high to hang it and where the lights go. A mirror that's sized and hung right makes the whole vanity look finished.
Try the free Vanity Mirror Size Calculator →
20. Bathroom Tile Layout Planner
See every edge cut on a bathroom floor or shower wall so you never end up with skinny slivers. Choosing the right starting point is the difference between a clean finish and slivers along the wall.
Try the free Bathroom Tile Layout Planner →
19. Paint Color Palette Generator
Pick one paint color you love and get whole-room palettes built around it. It's a great way to move from one color you love to a whole house that hangs together.
Try the free Paint Color Palette Generator →
18. Paint Color Contrast Checker
Check whether your wall, trim and door colors stand apart or blur together before you paint. It's especially useful for picking trim, doors and floors that don't blur into the walls.
Try the free Paint Color Contrast Checker →
In our reader polls, 60% picked white trim, compared with a quarter who went colour-matched and 15% who chose dark.
17. Flooring Pattern Visualizer
See herringbone, chevron and other wood floor patterns in your room, and how much extra to order. Patterns like herringbone need more material, and this tells you how much extra to order.
Try the free Flooring Pattern Visualizer →
16. Kitchen Remodel Cost Calculator
Get a low to high kitchen remodel budget with every line item, from cabinets and countertops to appliances. Every price is editable, so you can plug in the quotes you get and watch the total change.
Try the free Kitchen Remodel Cost Calculator →
15. Bathroom Remodel Cost Calculator
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Budget a powder room, full bath or primary bath remodel line by line, from the vanity to a tiled shower. It helps you see which upgrades actually move the budget before you talk to a contractor.
Try the free Bathroom Remodel Cost Calculator →
14. Flooring Cost Calculator
See hardwood, LVP, laminate, tile and carpet costs for your room side by side. You can edit the prices to match your local stores, so the comparison stays honest.
Try the free Flooring Cost Calculator →
13. Paint Calculator
Know exactly how many gallons of paint and primer to buy before you go to the store. It accounts for doors, windows and the number of coats, so you're not running back to the store mid-wall.
Try the free Paint Calculator →
12. Tile Calculator
Get the tile count, boxes and cost for your floor or wall, with the right waste for your pattern. Waste is built in for the pattern you pick, which is where most homemade estimates fall short.
Try the free Tile Calculator →
11. Wallpaper Calculator
Get the exact number of wallpaper rolls to buy, pattern repeat included. The pattern repeat is what catches most people out, and this accounts for it.
Try the free Wallpaper Calculator →
10. Drywall Calculator
Get the drywall sheet count for your walls and ceiling, plus the compound, tape and screws to finish them. It covers the finishing supplies too, which are easy to forget until the sheets are up.
Try the free Drywall Calculator →
9. Baseboard & Trim Calculator
Get the linear feet, the pieces to buy and the corners to cut for baseboard, crown and casing in any room. It also counts the corners, which tells you how many cuts you're in for.
Try the free Baseboard & Trim Calculator →
8. Stair Calculator
Turn one floor-to-floor measurement into risers, treads and stringer length, drawn to scale and checked against code. Handy for a deck, a basement or a full staircase, and it checks the numbers against common building code limits.
Try the free Stair Calculator →
7. Stair Runner Calculator
Get the stair runner length to order, the best width for your stairs and the rods you need. Runners are usually custom cut, so measuring right the first time saves real money.
Try the free Stair Runner Calculator →
6. Roofing Calculator
Work out roof squares, shingle bundles and the installed cost of a new roof from your house size and pitch. It's a useful way to sanity-check a roofing quote before you sign.
Try the free Roofing Calculator →
5. Exterior House Color Visualizer
Try siding, trim, roof and front door colors on a house before you commit to painting the outside. Exterior paint is a big expense and a long commitment, so it pays to see the combination first.
Try the free Exterior House Color Visualizer →
4. Fence Visualizer
See picket, privacy and horizontal slat fences in front of a house, to scale, with a materials list. Seeing the style in front of a house makes it much easier to choose before you get quotes.
Try the free Fence Visualizer →
3. Deck Board Calculator
Get the boards by length, screws and waste for your deck, laid out to scale. It lays the boards out to scale, so you can see how the rows and joints will look.
Try the free Deck Board Calculator →
2. Concrete Calculator
Find out how much concrete your slab, footings, post holes or steps need, in cubic yards or premix bags. It also tells you when ready-mix makes more sense than hauling bags.
Try the free Concrete Calculator →
1. Mulch, Soil & Gravel Calculator
Work out how much mulch, soil or gravel your beds need, in yards, bags or tons, at the right depth. Getting the depth right keeps weeds down without smothering your plants.
Try the free Mulch, Soil & Gravel Calculator →
Bookmark the ones you’ll come back to. They’re all free, and we keep adding more.
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