Free calculators for painting, flooring, concrete, landscaping, fencing, decking and other everyday home projects. Get a useful estimate, then learn how the calculation works.
Explore calculatorsEstimate how much paint you may need for a room or wall area.
Use calculator →Estimate the flooring area to order, including a practical waste allowance.
Use calculator →Estimate the number of tiles needed for a floor or wall area.
Use calculator →Estimate concrete volume for a simple rectangular slab or pad.
Use calculator →Estimate the volume of mulch needed for a garden bed.
Use calculator →Estimate soil volume for raised beds, garden beds, and planting areas.
Use calculator →Estimate gravel volume and approximate weight for a simple area.
Use calculator →Estimate fence posts and panels from total fence length.
Use calculator →Estimate deck area, boards across the width, and approximate joist count.
Use calculator →Estimate the number of pavers required for a rectangular area.
Use calculator →Calculate the area of a simple rectangle.
Use calculator →Calculate the volume of a rectangular space.
Use calculator →HomeMathTools turns common measurements into practical estimates. Every calculator explains its inputs, assumptions and limitations so you can understand the number before using it for a project.