Home Design Tools
Size & Spacing Calculators
Professional tools for perfect proportions in your home. Calculate TV heights, wall art sizes, lighting placement, and more using interior design principles trusted by professionals.
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Design Tools
9.0k+
Monthly Uses
4.9/5
User Rating
100%
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Most Popular Tools
Our most-used calculators for home design and interior planning
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Venue Capacity Calculator
Calculate event venue maximum occupancy with fire code limits, exit requirements, and setup configurations. Assists venues in safety compliance.
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New
Surface Area Calculator
Calculate the total surface area of cubes, spheres, cylinders, and more 3D geometric shapes.
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New
Cylinder Volume Calculator
Calculate the exact volume, lateral area, and total surface area of any cylinder, including liquid capacity.
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New
Cubic Yard Calculator
Calculate exact volume for mulch, dirt, gravel, or concrete projects in cubic yards and bags.
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2.1k+ uses
TV Wall Mount Height
Calculate the optimal height for mounting your TV for comfortable viewing. Uses ergonomic principles and viewing angle optimization.
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1.8k+ uses
Wall Art Size
Find the perfect size for artwork and wall decorations using professional interior design proportions and golden ratio.
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1.5k+ uses
Recessed Lighting
Plan optimal spacing and placement for recessed lights in any room. Calculate fixture count and positioning.
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1.3k+ uses
Curtain Size
Determine the right curtain dimensions for your windows. Calculate fabric requirements and rod placement.
Use CalculatorWhy Choose Our Design Tools?
Trusted by interior designers and homeowners worldwide
Professional Standards | thecalcs
All calculations based on industry design standards and ergonomic principles
Interior Designer Approved | thecalcs
Tools used and trusted by professional interior designers and architects
User-Friendly Interface
Intuitive calculators that work perfectly for both beginners and professionals
All Size & Spacing Tools
Complete collection of professional design calculators
Venue Capacity Calculator
PopularNew
Calculate event venue maximum occupancy with fire code limits, exit requirements, and setup configurations. Assists venues in safety compliance.
Open CalculatorSurface Area Calculator
PopularNew
Calculate the total surface area of cubes, spheres, cylinders, and more 3D geometric shapes.
Open CalculatorCylinder Volume Calculator
PopularNew
Calculate the exact volume, lateral area, and total surface area of any cylinder, including liquid capacity.
Open CalculatorCubic Yard Calculator
PopularNew
Calculate exact volume for mulch, dirt, gravel, or concrete projects in cubic yards and bags.
Open CalculatorTV Wall Mount Height
Popular2.1k+ uses
Calculate the optimal height for mounting your TV for comfortable viewing. Uses ergonomic principles and viewing angle optimization.
Open CalculatorWall Art Size
Popular1.8k+ uses
Find the perfect size for artwork and wall decorations using professional interior design proportions and golden ratio.
Open CalculatorRecessed Lighting
Popular1.5k+ uses
Plan optimal spacing and placement for recessed lights in any room. Calculate fixture count and positioning.
Open CalculatorCurtain Size
Popular1.3k+ uses
Determine the right curtain dimensions for your windows. Calculate fabric requirements and rod placement.
Open CalculatorLamp Shade Size
1.1k+ uses
Calculate the ideal lamp shade dimensions for any lamp base using professional lighting design principles.
Open CalculatorWainscoting
900+ uses
Calculate wainscoting dimensions and materials needed for professional-looking wall treatments.
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