Garden by the Numbers
New cedar raised bed being filled with dark soil from a wheelbarrow
Calculator

Raised bed soil calculator

Cubic feet, cubic yards, bag count and wet weight for any bed.

Basil, lettuce and parsley growing on a shelf under white LED grow lights
Calculator

Grow light cost calculator

Monthly and seasonal power cost from actual watts and your rate.

Dwarf tomato plants under an LED panel in a small grow tent
Calculator

DLI calculator

Convert PPFD and hours into DLI, or find the PPFD you need.

Green vegetable seedlings in a black cell tray on a wooden bench
Calculator

Seed starting calendar

Sowing dates for common crops from your last frost date.

Four cedar raised beds with parallel lines of drip tubing
Calculator

Drip line calculator

Tubing length, emitter count, flow rate and time per inch of water.

How these tools work

Each page explains its formula, so you can check our work. The results are planning estimates. Real soil settles, lights vary and weather changes, so allow a margin before you buy.