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Garden, Lawn & Farm Calculators
Garden, lawn, soil, mulch, plant spacing, irrigation and farm calculators. 36 free tools that run in your browser, no sign-up needed.
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Mulch CalculatorFind how much mulch you need in cubic yards and bags.Gravel & Crushed Stone CalculatorWork out cubic yards, tons and bags of gravel or crushed stone.Soil CalculatorWork out cubic feet, cubic yards and bags of soil for raised beds, round and triangle beds.Grass Seed CalculatorFind how much grass seed you need by lawn area and grass type, for a new lawn or overseeding.Pool Volume CalculatorFind pool volume in gallons and liters for rectangular, round, oval and kidney pools.Paver CalculatorCount pavers for a patio or path, with joints and waste, plus gravel base and sand volumes.Retaining Wall CalculatorBlocks, caps, base gravel and drainage stone for a block retaining wall.Pool Chlorine CalculatorHow much liquid chlorine, bleach or shock to add to reach a target free chlorine.Fertilizer CalculatorPounds of fertilizer and bags for your lawn from N-P-K and a target rate per 1,000 sq ft.Raised Bed Soil CalculatorSoil for raised garden beds in cubic feet, cubic yards, liters and bags, with mix recipes.Plant Spacing CalculatorHow many plants fit an area at a given spacing, in a square, triangular or row pattern.Rainwater Harvesting CalculatorGallons or liters of rainwater a roof collects from its area, rainfall and surface.Drip Irrigation CalculatorTotal GPH and GPM, gallons per run and max emitters per zone for a drip system.Lawn Watering CalculatorMinutes per sprinkler session and days per week from your precipitation rate or a can test.Pond Liner CalculatorPond liner size, pond volume in gallons and pump GPH from length, width and depth.Potting Soil CalculatorPotting mix for your pots in quarts, liters and cubic feet, and how many bags to buy.Sod CalculatorSquare feet, sod slabs or rolls, pallets and cost for your lawn, with multi-section areas.Tree Height CalculatorFind the height of a tree or building from distance and angle, or with the shadow method.Firewood Cord CalculatorTurn a woodpile's length, height and depth into cords, face cords, price per cord and BTUs.Garden PlannerLay out vegetable beds on a grid with plant spacing, counts and companion planting warnings.Land Area CalculatorOutline a lot or field on a map or enter GPS points to get acres, square feet, hectares and perimeter.Artificial Turf CalculatorSquare feet, roll lengths, seams, infill pounds, base rock and cost for an artificial lawn.Companion Planting ChartPick vegetables and herbs to see good and bad companions and check your garden for conflicts.Compost C:N Ratio CalculatorCarbon-to-nitrogen ratio, moisture and how much brown or green to add to hit 30:1.Crop Yield CalculatorCorn and soybean bushels per acre from ear, kernel, plant and pod counts before harvest.Flagstone CalculatorTons of flagstone, gravel base, sand and joint filler for any patio or path.French Drain CalculatorGravel in cubic yards and tons, perforated pipe and landscape fabric for a French drain trench.Frosting CalculatorHow much buttercream a cake or cupcakes need, with a recipe scaled to the right batch.Grow Light CalculatorTarget PPFD and DLI for your plants, plus grow light wattage and fixture count.Hay CalculatorWork out how much hay and how many bales your horses, cattle, sheep or goats need.Polymeric Sand CalculatorBags of polymeric sand from paver area, paver size, joint width and depth.Pool Alkalinity CalculatorHow much baking soda or muriatic acid to add to reach your target total alkalinity.Pool Fill Time CalculatorHow many hours a hose takes to fill your pool, from size and flow rate, plus water cost.Pool Salt CalculatorHow many pounds and 40 lb bags of salt to add to reach your target salt ppm.Shelf Sag CalculatorSee how much a wood, plywood or MDF shelf will sag under load, with creep and edge strips.Wood Weight CalculatorEstimate lumber or log weight in lb and kg from species, moisture and size or board feet.
About Garden, Lawn & Farm Calculators
Estimate how much mulch, gravel, soil, grass seed or pavers a project needs, plus pool volumes and plant spacing. Measure your area first; the calculators turn those measurements into bags, cubic yards or tons to buy.
Most used here: Mulch Calculator, Gravel & Crushed Stone Calculator and Soil Calculator.