Agriculture & Horticulture

Acres Per Hour Calculator

Calculate how many acres per hour you can cover based on tool width, speed, and overlap. Estimate time needed for mowing, plowing, or any field work.

Animal Mortality Rate Calculator

Calculate livestock mortality rate, cumulative mortality, and case fatality rate for farm animals using your herd or flock records.

Basal Area Calculator

Calculate basal area of trees using DBH measurements. Supports single tree and multiple tree stand density calculations in square feet per acre or square meters per hectare.

Cattle per Acre

Calculate how many cattle you can graze per acre based on pasture condition, precipitation, and cattle type with this free online cattle per acre calculator.

CO2 Grow Room Calculator

Calculate how much CO2 to add to your grow room or grow tent for optimal plant growth. Find the required CO2 volume and flow rate based on room dimensions.

Corn Yield Calculator

Calculate and estimate your corn yield in bushels per acre based on row spacing, ears count, kernel rows, kernels per row, and kernel size.

Cow Gestation Calculator

Estimate the expected calving date and track gestation progress of your cow using breed-specific average gestation lengths.

Daily Light Integral

Calculate the Daily Light Integral (DLI) based on the Photosynthetic Photon Flux Density (PPFD) and photoperiod (light hours per day).

Dry Matter Calculator

Convert pet food as-fed nutrient percentages to dry matter basis for accurate comparison between different brands and formulas.

FCR Calculator

Calculate feed conversion ratio for livestock, poultry, and fish. Estimate feed efficiency, costs, and compare feed quality with our FCR calculator.

Fertilizer Calculator

Determine exactly how much fertilizer you need for your lawn or garden based on N-P-K ratio, application rate, and area size.

GDU Calculator

Calculate Growing Degree Units (GDU/GDD) for corn and crops. Use our free GDU calculator to measure heat accumulation and predict crop growth stages.

Goat Gestation Calculator

Calculate goat gestation period and kidding due date. Use our free goat pregnancy calculator to find when your goat will give birth.

Grass Seed Calculator

Calculate how much grass seed you need for your lawn based on area size and seed coverage rate. Supports rectangular, circular, elliptical, and triangular lawns.

Horse Gestation Calculator

Calculate your mare's foaling date and track horse pregnancy stages with our free online horse gestation calculator. Enter the mating date to get the estimated due date, gestation timeline, and pregnancy day tracker.

Livestock Fence Calculator

Estimate materials and costs for livestock fencing including woven wire, barbed wire, high-tensile, and electrified fence types. Plan your agricultural fencing project with our free calculator.

Llama Gestation Calculator

Calculate llama and alpaca gestation periods and predict due dates for your camelids. Plan breeding and prepare for cria delivery with our free calculator.

Plant Population Calculator

Calculate the optimal number of plants for your farmland based on field dimensions, plant spacing, row spacing, and walkway width.

Plant Spacing Calculator

Plan your garden or landscaping project with our plant spacing calculator. Determine how many plants you need based on area size, spacing, and grid type.

Potting Soil Calculator

Calculate how much potting soil you need for your containers, raised beds, and flower pots. Supports rectangular, round, and tapered pot shapes.

Rabbit Gestation Calculator

Calculate your rabbit's due date and track pregnancy. Free online rabbit gestation calculator based on breed-specific gestation periods. Enter the breeding date to get the expected kindling date and pregnancy timeline.

Raised Bed Soil Calculator

Calculate how much soil you need for your raised garden beds. Online raised bed soil calculator with length, width, depth, and soil mix recipes for topsoil, compost, and aeration materials.

Sheep Gestation Calculator

Calculate the expected lambing date for your pregnant sheep based on the mating date. Free online sheep gestation calculator with timeline and progress tracking.

Soil Calculator

Calculate how much soil, topsoil, or garden soil you need based on area dimensions, depth, density, and price per unit.

Swine Gestation Calculator

Calculate the expected farrowing date for your pregnant sow based on the breeding date. Free online swine gestation calculator for pig farmers.

Tree Age Calculator

Estimate the age of any tree by selecting species and entering circumference or diameter at breast height with our free tree age calculator.

Tree Diameter Calculator

Calculate tree diameter at breast height (DBH) from circumference for single and multi-stemmed trees with our free tree diameter calculator.

Tree Height Calculator

Calculate tree height using trigonometry - measure angles and distance to determine tree height with our free online tree height calculator.

Tree Leaves Calculator

Estimate the number of leaves on a tree using leaf area index (LAI), crown diameter, and leaf sample measurements with our free online tree leaves calculator.

Tree Spacing Calculator

Calculate optimal tree spacing and number of trees per acre for your orchard or forest with our free tree spacing calculator.

Tree Value Calculator

Estimate the monetary value of a tree based on species, circumference, and height with our free online tree value calculator.

Vapor Pressure Deficit

Calculate vapor pressure deficit (VPD) for optimal plant growth with our free online VPD calculator. Input temperature and humidity to determine the ideal growing environment.

Vegetable Seed

Calculate how many vegetable seeds or seedlings you need for your garden rows. Free online vegetable seed calculator with preset spacing for common vegetables.

Vegetable Yield Calculator

Calculate your vegetable garden yield based on crop type, row length, and number of rows. Plan your garden with our free online vegetable yield estimator.

Water Potential Calculator

Calculate water potential (Psi) by summing osmotic potential, pressure potential, and gravitational potential components with our free online water potential calculator for plant physiology and soil science.

Water Soluble Fertilizer Calculator

Calculate how much water soluble fertilizer to add for target ppm concentrations. Free online fertilizer calculator for hydroponics, greenhouse crops, and custom nutrient solution mixing.

Chicken Coop Size Calculator

Calculate minimum chicken coop floor area from flock size, chicken type, and daily roaming space.

Hoop House Calculator

Calculate greenhouse cover surface area, conductive heat loss, required heater capacity, and material cost for gable, arch, quonset, and lean-to hoop houses.

Round Pen Calculator

Calculate round pen dimensions including circumference, number of panels needed, and area for your horse training round pen.