Garden Calculators

Gardening, lawn care, irrigation and composting

78 calculators in this category

Seed Spacing Calculator

Plan your garden layout with correct plant and row spacing. Enter bed dimensions and crop type to get exact plant counts, row counts, and seed quantities.

Lawn Overseed Calculator

Calculate how much grass seed you need for a new lawn or overseeding project. Enter lawn area and grass type for seed weight, bags, and fertilizer amounts.

Irrigation Calculator — Water & Scheduling

Calculate weekly water needs for lawns, vegetables, shrubs, and trees by soil type, sun exposure, and climate. Get gallons, runtime, and drip emitter counts.

Trellis Calculator

Calculate trellis materials by type, size, and grid spacing. Get linear feet of lumber, post count, fastener quantity, and total project cost estimates.

Lawn Fertilizer Calculator — How Much

Calculate how much fertilizer your lawn needs by area, N-P-K ratio, and target nitrogen rate. Get total pounds, bags needed, and nutrient delivery breakdown.

Frost Date Calculator - Planting Schedule by Zone

Look up frost dates by USDA zone and get a planting schedule for vegetables and herbs. See last spring frost, first fall frost, and growing season length.

Seed Starting Calculator — When to Start Seeds Indoors 2026

Find exactly when to start seeds indoors by USDA zone. Get a personalized planting schedule with indoor start dates, transplant timing, and harvest windows.

Garden Bed Planner — Plant Spacing & Layout Calculator

Plan your raised bed garden layout with our free planner. Calculate how many plants fit, get companion planting tips, and optimize spacing for maximum yield.

Rainwater Harvesting Calculator — Collection, Savings & Tank Size

Estimate annual rainwater collection from your roof area, calculate water bill savings, and find the ideal tank size based on your usage and local rainfall.

Backyard Ice Rink Calculator

Calculate water volume, liner size, fill time, freeze time, and materials for a backyard ice rink. Enter dimensions and temperature for accurate estimates.

Hot Tub Chemical Calculator

Calculate exact chemical doses for your hot tub. Get pH, alkalinity, chlorine, and bromine adjustments based on your water test readings and tub volume.

Sandbox Sand Calculator — How Much Sand You Need

Calculate how much sand you need for your sandbox. Get exact bag counts, weight, volume, and cost estimates for rectangular, circular, or hexagonal sandboxes.

Soil Amendment Calculator — Lime & Sulfur Application Rates

Calculate how much lime or sulfur to add to your soil. Enter current pH, target pH, soil type, and area for precise amendment rates and application schedules.

Companion Planting Calculator — Find Best Plant Pairings

Find the best companion planting pairs for your garden. Check compatibility for 20+ vegetables, herbs, and flowers with spacing tips and clear reasons.

Garden Container Size Calculator — Right Pot for Every Plant

Find the right container size for tomatoes, peppers, herbs, and vegetables. Calculate total potting soil in gallons and bags for your container garden.

Tree Trimming Cost Calculator — 2026 Arborist Pruning Estimator

Estimate 2026 tree trimming cost by tree size, height, and access. Small trees run $75-$400 and large mature trees cost $1,000-$2,500 per tree nationwide.

Stump Grinding Cost Calculator — 2026 Per-Inch Quote Estimator

Estimate 2026 stump grinding cost by diameter, root spread, and access. Most stumps run $3-$7 per inch with a $100-$150 minimum and average $200-$500 each.

Tree Planting Service Cost Calculator — 2026 Installer Quote

Estimate 2026 tree planting service cost by tree size, species, and site. Saplings run $60-$300 and large balled-and-burlapped specimens hit $500-$3,000 each.

Snow Removal Service Cost Calculator — 2026 Plow Quote Estimator

Estimate 2026 snow removal service cost per visit, hourly, or seasonal. Driveways run $30-$95 per visit and seasonal contracts range from $300 to $1,000.

Irrigation System Installation Cost Calculator — 2026 Contractor Quote

Estimate 2026 professional irrigation install cost by yard size, zones, and drip vs spray. Most quarter-acre systems run $3,500 to $8,000 with 4 to 6 zones.

Sprinkler System Installation Cost Calculator — 2026 Lawn Quote

Estimate 2026 in-ground sprinkler install cost by lawn size and zone count. Quarter-acre lawns run $1,700 to $6,000; half-acre $3,500 to $12,000 typical.

Landscape Design Service Cost Calculator — 2026 Designer Quote

Estimate 2026 landscape design fees by project scope, yard size, and designer tier. Most full residential plans run $2,200 to $6,180 with $50 to $200 hourly.

Pool Cleaning Service Cost Calculator — 2026 Monthly Rate Estimator

Estimate 2026 pool cleaning service cost per month. Weekly full-service runs $120-$400, biweekly $80-$200, monthly $60-$150, and chemical-only $65-$100/month.

Dirt Delivery Cost Near Me Calculator — 2026 Fill Dirt Quote Estimator

Estimate 2026 fill dirt delivery cost by cubic yards, dirt type, and ZIP. Local fill dirt runs $8-$25/yard; screened topsoil $25-$55 per yard delivered.

Grass Seeding Cost Calculator — 2026 Lawn Seeding Quote

Estimate 2026 grass seeding service cost by lawn size, seeding method, and region. Broadcast seeding runs $0.08-$0.20/sqft; hydroseeding $0.15-$0.35/sqft.

Grass Seed Prices Near Me Calculator — 2026 Cost by Variety

Compare 2026 grass seed prices by variety: fescue $2-$6/lb, bluegrass $4-$8/lb, bermuda $1-$4/lb. Find local retail costs per bag, per lb, and per 1,000 sqft.

Lawn Dethatching Cost Calculator — 2026 Pro Quote Estimator

Estimate 2026 lawn dethatching service cost by yard size, thatch depth, and region. Power-rake service runs $150-$350 for 5,000-10,000 sqft residential lawns.

Irrigation System Installation Cost Near Me — 2026 Local Quote Guide

Compare local 2026 irrigation system installation costs. Regional quotes run $3,500–$8,000; learn what drives near-me bids and how to save 15–25% with 3 quotes.

Drip Irrigation System Installation Cost Calculator — 2026 Whole Property

Estimate 2026 whole-property drip system installation cost by zone count, bed type, and controller. Multi-zone residential systems run $2,500–$7,500 typical.

Yard Drainage Cost Calculator — 2026 Method Comparison

Estimate 2026 yard drainage cost by method: French drain, channel drain, dry well, regrading, or downspout extension. Compare costs for any drainage problem.

Shrub Pruning Cost Calculator — 2026 Bush Trimming Estimator

Estimate 2026 shrub pruning cost by shrub count, size, and type. Foundation and ornamental shrubs run $25-$250 per shrub; rejuvenation pruning costs $150-$400.

Hedge Trimming Cost Calculator — 2026 Linear Footage Estimator

Estimate 2026 hedge trimming cost by linear footage and height. Boxwood, privet, arborvitae, and Leyland cypress rows run $0.75–$2.50 per foot nationwide.

Gazebo Install Cost Calculator — 2026 Prefab & Custom Price Guide

Estimate 2026 gazebo installation cost by size, material, and build type. Prefab kits run $3,500-$12,000; custom-built gazebos $10,000-$30,000 installed.

Lawn Care Service Cost Calculator — 2026 Weekly Mowing Quote

Estimate 2026 lawn care service cost by lawn size and frequency. Weekly mow, edge, and blow runs $45-$95 per visit and $150-$600 per month for most yards.

Lawn Aeration Service Cost Calculator — 2026 Pro Quote Estimator

Estimate 2026 pro lawn aeration cost per visit. Core aeration runs $80-$230 for a 5,000-10,000 sqft residential lawn; overseed bundle adds $100-$400 extra.

Lawn Fertilization Service Cost Calculator — 2026 TruGreen Price Estimator

Estimate 2026 lawn fertilization service cost per visit or annual program. 4-visit basic $300-$500, 6-visit $400-$730, premium 7+ visit $700-$1,350 a year.

Leaf Removal Service Cost Calculator — 2026 Fall Cleanup Quote

Compare 2026 yard leaf cleanup cost per visit and seasonal packages. Typical fall cleanup service runs $150-$400 per visit; 2-cleanup packages $250-$700.

Garden Path Installation Cost Calculator — 2026 Walkway Install Quote

Estimate 2026 garden path and walkway install cost by size, material, and region. Pro paver walkway $10-$20/sqft; flagstone walkway $15-$30/sqft installed.

Topsoil Delivery Cost Calculator — 2026 Bulk Topsoil Quote Estimator

Estimate 2026 topsoil delivery and install cost by yards, soil quality, and service scope. Bulk topsoil delivered runs $25 to $55 per yard most markets.

Drip Irrigation Installation Cost Calculator — 2026 Pro Quote

Estimate 2026 professional drip irrigation install cost for beds, veggies, and shrub borders. Small beds $300-$1,500; mid gardens $1,500-$4,500 typical.

Garden Path Calculator — Materials, Cost & Coverage Estimator

Calculate materials and costs for garden paths and walkways. Covers gravel, pavers, flagstone, mulch, stepping stones, and decomposed granite options.

Lawn Mowing Calculator — Time, Cost & Mower Comparison

Calculate lawn mowing time and annual costs by mower type. Compare push, riding, zero-turn, and robot mowers with professional lawn service estimates.

Tree Removal Cost Calculator — 2026 Arborist Quote Estimator

Estimate 2026 tree removal cost by tree size, location, and access. Small trees run $200-$500 and large hazardous removals reach $2,000-$10,000 nationwide.

Mushroom Substrate Calculator — Spawn & Yield Estimator

Calculate substrate weight, spawn amount, and expected yield for oyster, shiitake, and lion's mane mushrooms. Plan your grow from inoculation to harvest.

Firewood Seasoning Calculator — Drying Time by Species & Climate

Calculate firewood seasoning time by wood species, split size, stacking method, and climate. Get ready-to-burn dates, moisture estimates, and BTU ratings.

Drip Irrigation Planner Calculator

Plan your drip irrigation system with emitter counts, line lengths, pressure checks, and a full parts list. Get a complete design with cost estimates.

Garden Fence Calculator — Materials, Posts & Cost

Calculate fence materials for your garden perimeter. Get post counts, rail quantities, panel needs, gate hardware, and material cost estimates by fence type.

Sprinkler Coverage Calculator — Heads, Zones & GPM

Plan sprinkler head placement for full lawn coverage. Calculate heads needed, GPM flow rate, zone count, and weekly water usage by sprinkler type and area.

Shade Garden Calculator — Plants, Spacing & Layout

Analyze shade conditions and get plant recommendations for your garden. Match perennials, shrubs, and ground covers to sun hours, soil type, and moisture.

Garden Water Usage Calculator — Weekly Gallons & Cost

Estimate weekly and monthly garden water needs by plant zone, climate, and season. Get gallons per area and cost projections for lawn and garden watering.

Leaf Removal Calculator — Estimate Cleanup Time & Cost

Estimate fall leaf cleanup effort, bag count, hours, and total cost for your yard. Compare raking vs blowing vs mulch mowing with DIY and service costs.

Garden Shed Size Calculator — How Big a Shed Do You Need

Size your garden shed based on equipment and storage needs. Get standard shed size recommendations, estimated costs, and organization tips for your yard.

Lawn Aeration Calculator — Plan Core Aeration for Your Lawn

Plan core aeration for your lawn with core count, passes, timing, and cost estimates. Compare DIY machine rental vs professional service by soil type.

Rain Garden Calculator

Calculate rain garden size, plant counts, and excavation volume from your drainage area. Get soil-specific ponding depth, cost estimates, and runoff capacity.

Garden Irrigation Timer Calculator

Calculate sprinkler run times per zone based on plant type, soil, and weather season. Includes cycle/soak scheduling and monthly water cost estimates.

Bulb Planting Depth Calculator

Find the right planting depth and spacing for 12 flower bulb types. Get bulb counts, cost estimates, bone meal amounts, and a seasonal bloom calendar.

Pollinator Garden Calculator

Plan a pollinator-friendly garden with plant counts by bloom season. Calculate costs, coverage, and species diversity to attract bees and butterflies.

Herb Garden Planner Calculator

Plan your herb garden with spacing, yield, and cost estimates for 12 popular culinary herbs. Get companion planting tips and harvest value projections.

Square Foot Garden Calculator

Plan a square foot garden with plant-per-square spacing for 20+ vegetables. Calculate soil volume, bed layout, harvest value estimates, and total costs.

Shade Sail Calculator — Coverage, Post Height & Hardware

Calculate shade sail coverage area, ground shade projection, recommended post heights, and hardware needs. Factors in sun angle, sail shape, and sag allowance.

Landscape Fabric Calculator — Rolls, Pins & Cost

Calculate landscape fabric for garden beds. Get roll counts, pin quantities, seam overlap, and cost estimates for rectangle, circle, and L-shaped bed layouts.

Lawn Overseeding Calculator — Seed Rate & Coverage

Calculate grass seed for overseeding or new lawns. Get seed rates by grass type and condition, bag quantities, fertilizer needs, and total cost estimates.

Garden Fountain Pump Calculator — GPH & Wattage

Calculate the right pump size for fountains, waterfalls, and ponds. Get GPH ratings, wattage estimates, tubing recommendations, and monthly electricity costs.

Firewood BTU Calculator — Heat Output by Species

Compare firewood BTU output by wood species and moisture content. Calculate heating equivalents for oil, gas, propane, and electricity with cost comparisons.

Garden Lighting Calculator — Transformer & Wire Sizing

Size your landscape lighting transformer, wire gauge, and fixture layout. Get voltage drop analysis, monthly electricity costs, and material cost estimates.

Garden Yield Calculator

Estimate your garden's total harvest and grocery store value per square foot. Select vegetables, allocate growing area, and see detailed yield breakdowns.

Goat Pen Calculator — Pen Size, Shelter & Fencing

Calculate goat pen size per head, shelter area, and fencing materials. Plan the right pen dimensions for standard, miniature, dairy, or meat goat breeds.

Greenhouse Heating Calculator — BTU by Volume & Zone

Calculate BTU needed to heat your greenhouse by volume, glazing type, and USDA zone. Get propane, natural gas, and electric fuel estimates for heating.

No-Till Garden Calculator — Sheet Mulch Layers & Materials

Plan a no-till sheet mulch garden bed. Calculate cardboard, compost, and mulch quantities needed by bed dimensions and layer depth for no-dig gardening.

Garden Row Cover Calculator — Fabric Area & Hoop Wire

Calculate row cover fabric and hoop wire for garden beds. Get fabric area, hoop count, wire length, and material list by bed dimensions and cover type.

Keyhole Garden Calculator — Blocks, Soil & Compost Basket

Plan a keyhole garden bed with the right materials. Calculate blocks, soil volume, compost basket size, and planting area by garden diameter and wall height.

Straw Bale Garden Calculator — Bales & Conditioning Schedule

Plan a straw bale garden with the right number of bales and conditioning supplies. Calculate bales needed, nitrogen, water, and a 10-day prep schedule.

Garden Cloche Calculator — Dimensions & Cost per Plant

Calculate garden cloche needs for frost and pest protection. Get cloche count, total cost, and coverage area by plant count, spacing, and cloche type.

Hay Storage Calculator — Bales, Barn Sizing & Feed Duration

Calculate hay bale storage needs for your livestock. Estimate total bales, barn dimensions, feed duration, and stacking layout by animal type and herd size.

Seed Saving Calculator — Viability, Isolation & Storage

Plan seed saving with isolation distances, viability estimates, and storage tips. Calculate seeds needed by crop family, germination rate, and storage years.

Chicken Feed Mix Calculator — Custom Protein Blend

Formulate custom chicken feed with the right protein percentage for your flock. Calculate ingredient ratios, cost per pound, and monthly feed consumption.

Pig Feed Calculator — Daily Feed, FCR & Days to Market

Calculate pig feed requirements by weight and growth stage. Estimate daily feed, total feed to market weight, feed conversion ratio, and total feed cost.

Electric vs Gas Lawn Mower Cost Calculator — 2026 Break-Even

Compare electric vs gas lawn mower costs in 2026: upfront price, yearly running cost, and break-even year. See which mower is cheaper for your lawn size.