Ecology Calculators

Environmental and ecosystem-focused calculators for sustainability, emissions, and ecological analysis.

Carbon & Footprint

AI Water Footprint Calculator The AI Water Footprint Calculator estimates how much fresh water is consumed to run your AI chatbot usage. Data centres use water to cool the servers behind each query, so total water = number of AI prompts × water used per prompt.

Pollution & Air Quality

Benzo[a]pyrene Toxic Equivalent Calculator Convert the measured concentration of a polycyclic aromatic hydrocarbon (PAH) into its benzo[a]pyrene toxic equivalent (BaP-TEQ) using a toxic equivalency factor (TEF). Benzo[a]pyrene is the reference carcinogen with a TEF of 1, and other PAHs are scaled relative to it. Enter the concentration and the TEF to get the equivalent benzo[a]pyrene dose.

Sustainable Living

Books vs Ebooks Cost Calculator Compare the yearly cost of reading printed books versus ebooks. Enter how many books you read a year and the typical price of each format, plus the upfront cost of an e-reader, to see which option is cheaper and when the e-reader pays for itself.

Transportation

Car vs Bike Calculator Compare the annual cost and carbon footprint of driving a car versus biking the same distance. See how much money and CO₂ you'd save by switching to a bike for your commute or local trips. PHEV Fuel Economy Calculator PHEV Fuel Economy Calculator estimates fuel efficiency combining electric and gas usage. Combined MPGe = (miles_electric × MPGe_equiv + miles_gas × MPG) / total_miles.

Population Ecology

Carrying Capacity Calculator Estimate the carrying capacity (K) of an environment — the maximum population a habitat can sustain. Enter the total resources available and the resources each individual needs, and this calculator divides one by the other to find K.

Tools

Co2 Breathing Emission Calculator Co2 Breathing Emission Calculator is a calculator that helps you calculate co2 breathing emission values from your input data. The formula used is: CF = Fuel × CO₂ Factor. Enter values in the units shown next to each input label. Drip Faucet Calculator Drip Faucet Calculator is a calculator that helps you calculate drip faucet values from your input data. The formula used is: 1 AU = 149,597,870.7 km. Enter values in the units shown next to each input label. Flight Emissions Calculator Flight Emissions Calculator is a calculator that helps you calculate flight emissions values from your input data. The formula used is: λ = c/f. Enter values in the units shown next to each input label. Hydroelectric Power Calculator Hydroelectric Power Calculator is a calculator that helps you calculate power output from energy and time. The formula used is: P = E/t. Enter values in the units shown next to each input label. Lotka Volterra Equations Calculator Lotka Volterra Equations Calculator is a calculator that helps you calculate lotka volterra equations values from your input data. The formula used is: V = IR. Enter values in the units shown next to each input label. Solar Panel Wattage Calculator Solar Panel Wattage Calculator is a calculator that helps you calculate the solar panel wattage needed from your energy use and sunlight hours. The formula used is: P = E/t. Enter values in the units shown next to each input label. Tap Water Calculator Tap Water Calculator is a calculator that helps you calculate tap water values from your input data. The formula used is: Hardness = (Ca/40 + Mg/24) × 100. Enter values in the units shown next to each input label. Water Demand Calculator Water Demand Calculator is a calculator that helps you calculate water demand values from your input data. The formula used is: Hardness = (Ca/40 + Mg/24) × 100. Enter values in the units shown next to each input label.

Carbon Footprint

Fuel CO₂ Emissions Calculator Estimate the carbon dioxide produced by burning a quantity of fuel. Enter the litres used and the fuel's emission factor (kg of CO₂ released per litre), and this calculator multiplies them to give the CO₂ released — useful for sizing the footprint of a trip or a generator.

Emissions

Kaya Identity Calculator The Kaya Identity Calculator estimates total CO₂ emissions as the product of population, GDP per person, energy intensity of GDP, and carbon intensity of energy. Enter the four factors.

Events

Olympic Games Carbon Footprint Calculator The Olympic Games Carbon Footprint Calculator estimates the CO₂ from spectator travel to a major event from the number of spectators and their average round-trip distance. Enter the figures.

Sustainability

Plastic Reduction Impact Calculator Calculate environmental savings from reducing plastic use. Estimate CO2, water, and waste reduction. Vegan Diet Carbon Footprint Calculator Calculate environmental impact reduction from a vegan diet compared to meat-based diet.

Forestry

Tree Basal Area Calculator Calculate the basal area of a tree from its diameter at breast height (DBH). Basal area is the cross-sectional area of the trunk at 1.3 m (4.5 ft) above ground, and it's a key measure in forestry for stand density and growth. Optionally enter trees per area to get the basal area per hectare.

Cigarette Butts Cigarette Butts is a fast, free ecology calculator. Enter Cigarettes per Day and Days Smoked to get an instant, accurate result — complete with the formula, a step-by-step worked example, and answers to common questions, all on one page and private to your browser. Covid Pollution Covid Pollution is a fast, free ecology calculator. Enter Baseline Annual Emissions (tons) and Lockdown Period Emissions (tons) to get an instant, accurate result — complete with the formula, a step-by-step worked example, and answers to common questions, all on one page and private to your browser. Cryptocurrency Footprint Cryptocurrency Footprint is a fast, free ecology calculator. Enter Cryptocurrency and Number of Transactions to get an instant, accurate result — complete with the formula, a step-by-step worked example, and answers to common questions, all on one page and private to your browser. Eco Friendly Bags Eco Friendly Bags is a fast, free ecology calculator. Enter Reusable Bags Owned, Shopping Trips per Year and Average Bag Weight (kg) to get an instant, accurate result — complete with the formula, a step-by-step worked example, and answers to common questions, all on one page and private to your browser. Environmental Benefits Per Tree Calculate environmental benefits of planting trees: CO₂ offset, oxygen production, stormwater prevention. Fish Mercury Fish Mercury is a fast, free ecology calculator. Enter Fish Species, Servings per Week and Serving Size (grams) to get an instant, accurate result — complete with the formula, a step-by-step worked example, and answers to common questions, all on one page and private to your browser. Global Plastic Policy Global Plastic Policy is a fast, free ecology calculator. Enter Annual Plastic Production (metric tons), Ocean Leakage Rate (%) and Decomposition Time (years) to get an instant, accurate result — complete with the formula, a step-by-step worked example, and answers to common questions, all on one page and private to your browser. Hand Dryers Vs Paper Towels Hand Dryers Vs Paper Towels is a fast, free ecology calculator. Enter Annual Restroom Uses (facility), Dryer Unit Cost ($) and Dryer Energy per Use (kWh) to get an instant, accurate result — complete with the formula, a step-by-step worked example, and answers to common questions, all on one page and private to your browser. Meat Footprint Calculate CO₂ footprint from meat consumption. Plastic Footprint Calculate your weekly plastic waste footprint. Shannon Index Calculate the Shannon Diversity Index (H'). Solar Panel Calculate solar panel system output and savings. Wind Turbine Wind Turbine is a fast, free ecology calculator. Enter Rotor Diameter, Average Wind Speed and Efficiency (Cp) to get an instant, accurate result — complete with the formula, a step-by-step worked example, and answers to common questions, all on one page and private to your browser. Wind Turbine Profit Calculate profitability of a wind turbine installation. Zero Waste Christmas Tree Zero Waste Christmas Tree is a fast, free ecology calculator. Enter Tree Height (feet) and Years Reused (cycles) to get an instant, accurate result — complete with the formula, a step-by-step worked example, and answers to common questions, all on one page and private to your browser.