Home & Garden Tools
Numbers for the home and yard beyond the build — tank volumes, hanging heights, holiday lights, and everyday household projects.
Aquarium Volume Calculator
Gallons, liters, and filled water weight for any tank shape and size.
Picture Hanging Height Calculator
Exact nail height to center art at 57-60 inches, with wire sag and galleries.
Christmas Light Calculator
How many light strands for your roofline, tree, and bushes — plus amp draw.
Every tool runs in your browser — nothing you enter is uploaded, stored, or shared. Missing a calculator you need? Tell us and we may build it.