Home Battery & VPP Optimizer: TOU Arbitrage + Grid Revenue
The only free battery storage calculator that models virtual power plant (VPP) payments, TOU arbitrage, and DSIRE incentives. Includes Tesla...
Solar & Energy Audit Architect: ROI + Incentives + Battery
The only free tool combining solar ROI, DIY energy audit, and battery storage analysis. Includes state-specific incentives, net metering, and...
Moving Box Calculator: How Many Boxes Do I Need
Stop guessing how many moving boxes to buy. Get a personalized estimate based on your home size, number of rooms,...
Feng Shui Home Compass: Ba Zhai & Flying Stars
Unlock ancient Chinese wisdom. Calculate your personal Ming Gua (Life Trigram), discover 2026 Flying Star wealth positions, and harmonize your...
BTU Calculator: Heating & Cooling Load Estimator
Find the perfect furnace or AC size. Calculate BTUs and tons based on room size, insulation, windows, and climate zone....
Smart Curtain Calculator: Fabric Yardage & Energy Savings
Advanced curtain planner: calculates fabric needed and estimates heating/cooling energy savings based on window orientation, glass type, and local climate....
Concrete Calculator: Bags, Yards & Cost Estimator
Find exactly how many bags of concrete or cubic yards you need for slabs, footings, columns, and stairs. Includes waste...
Tile & Flooring Calculator: Boxes Needed Estimator
Stop buying too much tile or flooring. Get exact box counts for any room shape. Includes waste factor, unit conversion,...
Wallpaper Calculator: How Many Rolls Do I Need
Stop guessing wallpaper quantities. Calculate exact rolls needed for any room. Factors pattern repeat, wall height, doors, and windows. Save...
Paint & Flooring Calculator: Room Material Estimator
Stop buying too much or too little. Calculate exactly how much paint and flooring you need. Accounts for windows, doors,...