Composting Calculators
Essential calculators for composters and gardeners. Calculate C:N ratios, greens/browns balance, worm bin sizing, compost tea brewing, and application rates with precision.
Composting C:N Ratio Calculator
Calculate carbon-to-nitrogen ratio for optimal composting. Input material types and weights to achieve the ideal 25-30:1 ratio for hot, fast decomposition.
Bokashi Bran Calculator
Estimate bokashi bran needs per layer, per week, and per full bucket from waste volume and dosing intensity.
Compost Application Calculator
Calculate how much compost you need for your garden beds, lawns, or landscaping. Determine volume, weight, bags needed, and cost estimates for proper compost application.
Compost Moisture Calculator
Estimate compost moisture balance and get correction amounts. Calculate water additions or dry browns needed for the ideal 45-60% moisture range.
Compost Nutrient Value Calculator
Estimate available compost NPK nutrients and fertilizer replacement value from compost analysis and application rates.
Compost Bin Sizing Calculator
Calculate ideal compost bin capacity from weekly food scraps and yard waste. Get gallon and cubic-foot sizing with practical bin recommendations.
Compost Maturity Timeline Calculator
Estimate active and curing phases for compost maturity based on method, conditions, and management frequency.
Compost Pile Volume Calculator
Calculate compost pile volume by shape and dimensions. Convert cubic feet to yards, estimate finished compost yield, and plan turning schedules accurately.
Compost Topdressing Calculator
Calculate compost volume and bag counts for lawn topdressing by square footage and application depth.
Compost Turning Schedule Calculator
Estimate optimal compost turning frequency and next-turn timing from method, temperature, and process conditions.
Composting Carbon Footprint Calculator
Estimate annual carbon footprint impact from diverting organic waste to composting instead of landfill disposal.
Compost Tea Brewing Ratio Calculator
Calculate compost tea brewing ingredients with standard 1:10 to 1:20 ratios. Get compost amount, molasses additions, and total brew volume instantly.
Compost Tea Dilution Calculator
Calculate compost tea dilution ratios for foliar sprays and soil drenches. Get exact water additions, final volume, concentration percent, and coverage.
Greens to Browns Ratio Calculator
Calculate the ideal greens-to-browns ratio for your compost pile by volume. Achieve the perfect 2:1 to 4:1 browns-to-greens ratio for healthy, aerobic decomposition.
Hot Composting Temperature Calculator
Evaluate compost pile temperature stage and get turning recommendations. Optimize thermophilic composting with moisture, ambient temperature, and timing context.
Finished Compost Volume Estimator
Estimate finished and usable compost volume after decomposition shrinkage and optional screening loss.
Tumbler Capacity Calculator
Calculate compost tumbler total and usable capacity, then estimate fill duration from weekly waste input.
Vermicompost Bedding Calculator
Calculate startup and maintenance bedding volume for worm bins, with material split estimates for common bedding blends.
Worm Bin Stocking Density Calculator
Calculate worm bin stocking density by surface area. Estimate pounds of worms, worm count, and weekly processing capacity for vermicomposting bins.
Worm Bin Sizing Calculator
Estimate worm-bin dimensions and capacity from weekly food scraps and vermicomposting processing assumptions.
About Composting Calculators
Our composting calculators help you create perfect compost with scientific precision. Whether you're calculating carbon-to-nitrogen ratios for hot composting, balancing greens and browns, sizing a worm bin, or determining how much compost to apply to your garden, these tools eliminate the guesswork.
From backyard composters to serious vermicomposters, these calculators are designed to help you turn kitchen scraps and yard waste into black gold efficiently. Get the right balance, perfect your technique, and maximize your composting success.