Soil Volume Calculator
Calculate cubic yards and bag count for raised beds, garden beds, and landscaping from length, width, and depth.
Outdoor & Gardening Tools
Compost Calculator
Calculate how much compost you need for top dressing, new beds, or soil improvement from area size and depth.
Dirt & Topsoil Calculator
Calculate cubic yards and approximate tonnage of dirt or topsoil for grading, leveling, and yard projects.
Lawn Fertilizer Calculator
Calculate exactly how many pounds of lawn fertilizer to apply based on lawn size, target nitrogen rate, and the N-P-K on the bag.
Soil pH Adjuster Calculator
Calculate how much garden lime or elemental sulfur to apply to raise or lower soil pH based on current pH, target pH, and soil type.
Bulb Spacing Calculator
Calculate how many bulbs to plant in a given area using staggered (triangular) spacing for spring bulbs and allium.
Plant Population Calculator
Calculate plants per acre or square foot for row crops, market gardens, and small farms using row spacing and in-row spacing.
Vegetable Seed Calculator
Calculate how many seeds you need for vegetable garden rows using row length, number of rows, and plant spacing.
Drip Irrigation Calculator
Calculate how long to run a drip irrigation system to apply a target depth of water based on emitter flow rate and spacing.
Grain Conversion Calculator
Convert agricultural yields between bushels, pounds, and metric tons for corn, wheat, soybeans, and oats.
Tree Value Calculator
Estimate the commercial timber value (stumpage) of a standing tree from trunk diameter at breast height (DBH) and species.
Black Walnut Tree Value Calculator
Understand how DBH, grade, defects, and local stumpage reports affect a black walnut value estimate.
Oak Tree Value Calculator
Calculate the timber value of a white oak or red oak from trunk diameter at breast height.
Pine Tree Value Calculator
Calculate the timber value of a pine tree (white pine, loblolly, or ponderosa) from DBH.
Hickory Tree Value Calculator
Calculate the timber value of a hickory tree (shagbark, pignut, shellbark) from DBH.
Cedar Tree Value Calculator
Calculate the timber value of an eastern red cedar (aromatic cedar) from DBH.
Tree Height Calculator
Estimate the height of a tree using the similar triangles shadow method. No climbing required.
Tree Age Calculator
Estimate a tree's age from trunk circumference and species using the ISA growth factor formula. No core sample needed.
Tree Diameter Calculator
Convert trunk circumference to diameter (DBH) using the pi constant. Standard forester measurement.
Tree Leaves Calculator
Estimate the number of leaves on a tree from crown diameter and foliage density. Useful for wildlife habitat, biomass, and cleanup planning.
Tree Planting Cost Calculator
Estimate the cost to plant a tree based on size, root ball type, and site access. Includes bare-root, container, and balled-and-burlapped pricing.
DBH Basal Area Calculator
Calculate the basal area of a tree (sq ft) from DBH, and convert to per-acre stand density from tree count.
Tree Removal Cost Calculator
Estimate the cost to remove a tree based on its height, diameter, and site accessibility.
Tree Burl Value Calculator
Estimate the value of a tree burl based on size, quality, and wood species. Burls are specialty wood for veneers and turning.
Firewood Cord Calculator
Calculate how many cords of firewood you have from a log or stack volume. Standard cord = 128 cubic feet.
Firewood BTU Calculator
Calculate the heat content (BTU) of a firewood stack by species and volume. Plan your winter heating with accurate energy estimates.
Stump Removal Cost Calculator
Estimate the cost of stump removal or grinding based on stump diameter, root depth, and site access.
Tree Trimming Cost Calculator
Estimate the cost of pruning or trimming a tree based on height, canopy radius, and accessibility.
Land Clearing Cost Calculator
Estimate the cost of clearing land by acreage, terrain difficulty, and vegetation density. Includes brush, small trees, and large tree clearing.
Tree Carbon Sequestration Calculator
Estimate the pounds of CO2 sequestered by a tree from species, age, and DBH. Includes carbon mass and CO2 equivalent.
Succulent Watering Calculator
Calculate how much and how often to water succulents based on pot size and season. Includes growing vs dormant cadence.
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Frequently asked questions
What are plant calculators?
Plant calculators are interactive tools that help you make plant care decisions based on your plant type, pot size, light, soil, season, symptoms, and care habits.
Are these plant tools free?
Yes, the plant calculators and care tools on this page are free to use.
Can these tools diagnose plant problems?
Some tools can help identify likely causes of common plant symptoms such as yellow leaves, brown tips, drooping leaves, leaf curl, spots, pests, and root rot. They are meant for guidance, not professional diagnosis.
Which tool should I use if my plant is dying?
Start with the Why Is My Plant Dying? tool or the Plant Problem Diagnosis tool. If you already know the main symptom, use a specific tool such as Yellow Leaves Diagnosis Tool, Brown Tips Diagnosis Tool, or Root Rot Risk Checker.
Which tool helps with watering?
Use the Plant Watering Calculator to estimate watering frequency and the Water Amount Calculator to estimate how much water to use.
Which tool helps me choose a plant?
Use Best Plant for My Room Finder, Beginner Plant Finder, Low Light Plant Finder, Office Plant Finder, Balcony Plant Finder, Bathroom Plant Finder, or Pet-Safe Plant Finder.