Gardening & agriculture
Plant spacing, seed quantity, lawn seed, sod, fertilizer, mulch, topsoil, irrigation, growing degree days and crop yield calculators.
- Chicken Feed Calculator: Feed per Day and Month Feed per day (kg) 1.32 Feed per 30 days (kg) 39.6
- Compost Calculator: Cubic Yards for Top Dressing Compost needed (cubic yards) 3.4 Compost needed (cubic feet) 91.67
- Compost C/N Ratio Calculator (Carbon to Nitrogen) Blend C:N ratio (to 1) 27.06 Assessment 25 to 30: in the typical composting range
- Crop Yield Calculator: Bushels per Acre to kg/ha Yield (kg/ha) 2,500 Yield (tonnes/ha) 2.5
- Fertilizer NPK Calculator: How Much Fertilizer to Apply Product to apply (per 1,000 sq ft, acre or hectare, as chosen) 10 Total product for your area (lb or kg) 10
- Garden Bed Area Calculator for Any Shape Area (square feet or square metres) 80 Area in the other unit (square metres or square feet) 7.43
- Germination Rate Calculator: Percentage and Seeds Germination rate (%) 72 Seeds to sow 25
- Growing Degree Days Calculator (GDD) with Base Temp GDD per day 17 Total GDD 17
- Hay Calculator: How Many Bales per Horse or Cow Bales needed 27 Hay per animal per day (with waste) 22
- Drip Irrigation Flow Calculator: GPM and Runtime Zone flow (gpm) 1.67 Zone flow (L/min) 6.31
- Lawn Fertilizer Calculator: Pounds per 1,000 sq ft Fertilizer needed (lb) 25 Bags to buy 1
- Lawn Seed Calculator: Pounds of Seed per Area Seed needed (lb) 40 Bags to buy 8
- Lawn Watering Calculator: Sprinkler Time and Gallons Minutes per watering 60 Output used (inches per hour) 0.5
- Lime Calculator: How Much Lime to Raise Soil pH Lime product needed (lb or kg) 76.52 Application rate (lb per 1,000 sq ft, or kg per m2) 76.52
- Plant Spacing Calculator: How Many Plants Fit in a Bed Plants that fit 32 Number of rows 4
- Planting Date Calculator: Last Frost to Sowing Date Plant on March 29, 2026 Days between the reference date and planting 42
- Pond Volume Calculator: Gallons, Litres and Liner Size Volume in US gallons 897.7 Volume in litres 3,398
- Potting Mix Calculator: Ratio and Volume Ingredient 1 volume (in the chosen measure) 4 Ingredient 2 volume (in the chosen measure) 4
- Rain Barrel Calculator: Water per Inch of Rain Water collected (gallons or litres) 498.7 Barrels needed (rounded up) 10
- Raised Bed Soil Calculator: Cubic Feet, Yards, Bags Soil needed (cubic feet) 35.2 Soil needed (cubic yards) 1.3
- Seed Quantity Calculator: How Many Seeds to Sow Seeds to sow 300 Plant positions to fill 200
- Sod Calculator: How Many Rolls or Square Feet? Sod needed (sq ft) 1,050 Rolls to order 105
- Stocking Rate Calculator: Animal Units per Acre Answer (animals supported, or acres or hectares needed) 32 Animal units (AU) 32.05
- Tree Spacing Calculator: Trees per Acre and Hectare Trees in your plot 231 Trees per acre or hectare 400
- Vegetable Garden Planner: Plants per Bed and Beds Needed Beds needed (whole beds) 2 Total bed area (sq ft or m2) 64