Outdoor & Landscaping Calculators

Compost CalculatorCalculate compost volume needed to spread over a garden or lawn area. Coverage area (sq ft) Depth (in) CalculateReset Compost […]Concrete CalculatorCalculate concrete volume for a slab or footing, in cubic yards and 80-pound bags. Length (ft) Width (ft) Depth (in) […]Deck Cost CalculatorEstimate deck construction cost based on area, material grade, and labor rate. Deck area (sq ft) Labor rate ($/sq ft) […]Fence CalculatorCalculate fence posts and rails for a board fence run. Fence length (ft) Post spacing (ft) Rails per section CalculateReset […]Garden Bed Soil CalculatorCalculate how much soil you need to fill a garden bed or raised bed. Bed length (ft) Bed width (ft) […]Gravel CalculatorCalculate gravel volume and weight for a driveway, path, or base layer. Length (ft) Width (ft) Depth (in) Gravel typePea […]Lawn Fertilizer CalculatorCalculate lawn fertilizer bags needed per application and per year. Lawn area (sq ft) Coverage per bag (sq ft) Applications […]Mulch CalculatorCalculate mulch volume for garden beds, tree rings, or landscape areas, in cubic yards and bags. Area (sq ft) Depth […]Paver CalculatorCalculate the number of pavers needed for a patio or walkway based on area and paver size. Area (sq ft) […]Pond Volume CalculatorCalculate pond volume in cubic feet and gallons for fish stocking, filter sizing, and chemical dosing. Length (ft) Width (ft) […]Retaining Wall Block CalculatorCalculate how many blocks you need to build a retaining wall. Wall length (ft) Wall height (ft) Block width (in) […]Seed Coverage CalculatorCalculate grass seed pounds needed by area and seed type. Area (sq ft) Seeding scenarioOverseeding (3 lbs/1000 sqft)New lawn KBG/rye […]Sod CalculatorCalculate how much sod you need for a lawn, in rolls and pallets. Lawn area (sq ft) Waste % CalculateReset […]Soil CalculatorCalculate how much soil you need to fill a garden bed or raised bed. Length (ft) Width (ft) Depth (in) […]Sprinkler Coverage CalculatorEstimate the number of sprinkler heads needed to cover an area with the desired overlap. Area to irrigate (sq ft) […]
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The calculators and tools on Formula Factory are provided for general guidance and informational purposes only. Results are estimates based on standard formulas and the values you enter — they do not constitute professional engineering, electrical, or architectural advice. Always verify calculations with a qualified professional before making decisions for any safety-critical, code-compliance, or commercial application. Formula Factory makes no representations or warranties as to the accuracy or completeness of any result, and accepts no liability for errors, omissions, or any outcomes arising from reliance on this information.