Measure, calculate, and convert for any home improvement project.
Essential converters for DIY projects, home renovation, and property measurements.
Calculate how much paint you need for any room.
Measure wall height and perimeter
Calculate total wall area
Subtract windows and doors
Divide by coverage rate (350-400 ft²/gal)
Add 10% extra for touch-ups
Room and property measurements
Paint and material calculations
Furniture sizing help
HVAC unit conversions
Works on any device
Calculate room square footage, then use our coverage estimator (typically 350-400 sq ft per gallon).
Yes! Convert cubic feet, cubic yards, and cubic meters for concrete projects.
Measure your room in any unit and convert to square feet or square meters for flooring orders.
Access 177,000+ free unit conversions, optimized for homeowners.
Go to Converter