Ecologie & milieu Rekenmachines

Carbon footprint, energy savings, water use, and environmental impact. Enter your habits — see your footprint in context with improvement suggestions. Free.

Calculate how many solar panels you need for your home. Enter energy usage and panel wattage — see panel count, roof area, and payback. Free.

Calculate annual energy savings from efficiency improvements. Enter current usage and improvement — see kWh saved, cost saved, and CO₂ reduction. Free.

Track daily household water usage. Enter water activities — see daily usage in litres and comparison to average. Free.

CO2 saved by recycling different materials. Based on sports science. Instant result with training zone chart and performance guide.

Calculate carbon offset from planting trees. Enter species and count — see CO₂ absorbed per year and equivalent car miles offset. Free.

Calculate annual savings from switching to LED bulbs. Enter bulb count, hours, and rates — see kWh saved and annual cost reduction. Free.

Calculate CO₂ equivalent of common foods and diets. Enter weekly food consumption — see carbon footprint and diet comparison. Free.

Calculate annual electricity cost for household appliances. Enter wattage and hours — see kWh/year, annual cost, and standby impact. Free.

Energy and cost savings from home insulation. Instant material estimate with formula, waste factor and step-by-step calculation guide.

Calculate CO₂ from your daily commute by transport mode. Enter distance and mode — see daily and annual emissions with alternatives. Free.

Calculate water and cost savings from shorter showers. Enter current duration and rate — see gallons saved and annual bill reduction. Free.

Calculate trees needed to offset your carbon footprint. Enter annual CO₂ in tonnes — see trees needed and planting area required. Free.

Calculate annual savings from switching to an electric vehicle. Enter current fuel cost and EV tariff — see yearly savings and payback. Free.

Estimate annual savings from solar panel installation. Enter system size and electricity rate — see savings, payback period, and ROI. Free.

Estimate your annual plastic consumption footprint. Enter your usage habits — see kg of plastic used, recycled, and landfilled per year. Free.

Calculate the environmental impact of food waste. Enter waste type and quantity — see CO₂ equivalent, water wasted, and money saved by reducing. Free.

Calculate the environmental cost of fast fashion purchases. Enter items bought per year — see CO₂, water, and microplastic impact. Free.

Calculate heat pump payback period and ROI after the UK Boiler Upgrade Scheme grant. Instant result with amortization table, formula and chart. Free financial calculator.

Calculate payback period and 20-year savings from home insulation upgrades. Instant material estimate with formula, waste factor and step-by-step calculation guide.

Calculate rainwater harvesting potential for any roof area. Enter roof size and rainfall data — see litres collected per year and savings. Free.

Compare 5-year total cost of ownership between electric and petrol vehicles. Enter purchase price, fuel, and maintenance — see which costs less. Free.

Estimate savings from home solar battery storage. Enter battery capacity and export rate — see self-consumption boost and payback. Free.

Calculate the benefit of home composting. Enter household waste amount — see CO₂ saved, compost produced, and fertiliser value. Free.

Score the sustainability of your diet. Enter weekly food consumption by category — see carbon footprint, water footprint, and sustainability rating. Free.

Revenue advantage of crop rotation over monoculture. Instant result with amortization table, formula and chart. Free financial calculator.

Calculate annual irrigation system cost per acre. Enter water rate, crop type, and acreage — see total irrigation cost. Free.

Net farm income and profit margin calculator. Instant result with amortization table, formula and chart. Free financial calculator.

Annual feed cost per animal and total herd. Enter your figures — see the result with formula and year-by-year breakdown. Free.

Calculate grain storage cost vs price improvement. Enter grain volume, storage cost, and price change — see breakeven and ROI. Free.

Farmland value based on rental income and cap rates. Enter your figures — see the result with formula and year-by-year breakdown. Free.

Return on investment from precision farming technology. Instant result with amortization table, formula and chart. Free financial calculator.

Greenhouse construction and operating return on investment. Instant result with amortization table, formula and chart. Free financial calculator.

Gross and net revenue from crop harvest. Instant result with amortization table, formula and chart. Free financial calculator.

Agricultural loan payments and debt service coverage. Instant result with breakdown, formula and payment schedule. Free financial calculator.

Is organic certification worth the yield reduction?. Enter your values — see the result with formula, examples, and step-by-step working. Free.

Total seed cost based on acreage and seeding rate. Enter your figures — see the result with formula and year-by-year breakdown. Free.

Return on lime and soil amendment applications. Enter your values — see the result with formula, examples, and step-by-step working. Free.

USDA crop insurance coverage and farmer premium. Enter your values — see the result with formula, examples, and step-by-step working. Free.

Seasonal farm labor cost including housing. Enter your figures — see the result with formula and year-by-year breakdown. Free.

Return on investment for hydroponic growing systems. Instant result with amortization table, formula and chart. Free financial calculator.

Honey production revenue and beekeeping profitability. Instant result with amortization table, formula and chart. Free financial calculator.

Fish farming revenue, feed costs and returns. Instant result with amortization table, formula and chart. Free financial calculator.

Revenue from carbon sequestration on agricultural land. Instant result with breakdown, formula and payment schedule. Free financial calculator.

Valuation and lease income from agricultural water rights. Enter your figures — see the result with formula and year-by-year breakdown. Free.

Own vs custom hire comparison for farm equipment. Instant result with amortization table, formula and chart. Free financial calculator.

Multi-level indoor farming revenue and profitability. Enter your values — see the result with formula, examples, and step-by-step working. Free.

Estimate agricultural subsidy payments for your farm. Enter eligible land area and crop type — see CAP or USDA payment estimates. Free.