Home & Garden
Growing, sewing, and home projects.
Practical calculators for growers and DIYers. Our aquaponics tool sizes a full fish-plant-biofilter loop from your daily feed and flags un-ionized ammonia toxicity from your pH and water temperature — using published aquaculture formulas. The pleat calculator turns a finished measurement into the exact fabric length for knife, box or inverted pleats, and draws the folds in 3D as you change them, right down to a mark-by-mark chalk guide. The macrame calculator works out how long to cut every cord, how many you need, and how much to buy. The soap lye calculator computes exact lye and water for any oil blend and predicts how the bar will feel. More home and garden tools are on the way.