Science cluster
Energy & Renewables Calculators
Size solar, wind, and battery systems and estimate power output, storage, grid, and carbon-emission figures.
Top calculators
A short starting set for the most common energy & renewables calculators workflows.
Regenerative Braking Energy Recovery Calculator (kWh & Cost Savings)
Estimate recoverable energy (kWh) and cost savings from regenerative braking using vehicle mass, speed change, regen efficiency, braking events per day, and electricity price.
Sand Battery Thermal Storage Calculator
Estimate energy stored in a sand heat battery, charging time, and heating duration for off-grid thermal storage experiments.
Off-Grid Refrigerator Battery Runtime Calculator | Estimate Fridge Runtime From Battery Capacity
Estimate how long an off-grid battery bank can run a refrigerator using battery capacity, system voltage, depth of discharge, inverter efficiency, and daily fridge energy use.
Tiny Home Solar Needs Calculator | Estimate Panels and Battery Storage
Estimate how many solar panels and how much battery storage a tiny home needs using daily energy use, panel wattage, sun hours, efficiency, and autonomy days.
Green Ammonia Production Cost Calculator
Estimate electricity use, water demand, and cost for producing green ammonia using renewable-powered electrolysis and Haber-Bosch synthesis.
Heat Pump Carbon Abatement Calculator
Translate heat pump upgrades into carbon abatement cost metrics across multiple energy scenarios.
Building Embodied Carbon Calculator
Estimate embodied carbon from building materials by entering masses and emission factors for up to three materials. Get total embodied carbon in kg and tonne...
EV Cold Weather Range Loss Calculator
Estimate how much driving range an electric vehicle loses in cold weather based on temperature, speed, and cabin heating.
All calculators in this cluster
Browse 19 calculators matched to this topic, or return to the Science category.
Building Embodied Carbon Calculator
Estimate embodied carbon from building materials by entering masses and emission factors for up to three materials. Get total embodied carbon in kg and tonne...
Compost Carbon-Nitrogen Balance Calculator
Calculate how much green material to mix with your browns to hit an ideal compost carbon‑to‑nitrogen (C:N) ratio. Practical C:N calculator for home gardeners...
EV Cold Weather Range Loss Calculator
Estimate how much driving range an electric vehicle loses in cold weather based on temperature, speed, and cabin heating.
Forest Carbon Sequestration Calculator - Estimate CO2 Storage
Estimate how much carbon a forest stores and sequesters annually based on area, tree density, and age. Understand your woodland's climate impact.
Green Ammonia Production Cost Calculator
Estimate electricity use, water demand, and cost for producing green ammonia using renewable-powered electrolysis and Haber-Bosch synthesis.
Heat Pump Carbon Abatement Calculator
Translate heat pump upgrades into carbon abatement cost metrics across multiple energy scenarios.
Hydrogen Embrittlement Failure Risk Calculator
Estimate the probability of component failure due to hydrogen embrittlement using pressure, temperature, strength, and exposure time.
Hydrogen Storage Explosion Risk Calculator
Gauge the probability of an explosive hydrogen release from storage tanks using pressure, volume, temperature, ventilation, and ignition likelihood.
Induction vs Gas Cooktop Cost and Emissions Calculator
Compare energy cost and carbon emissions for cooking the same meal on an induction cooktop versus a gas stove.
Jewish Holiday Calendar Generator
Generate Jewish holiday dates for the Hebrew calendar year. Convert between Jewish years and Gregorian dates for Rosh Hashanah, Passover, Yom Kippur, and other Jewish holidays.
Lithium-Ion Battery Calendar Aging Planner
Estimate lithium-ion battery capacity fade from calendar aging under different storage temperatures, states of charge, and time horizons.
Lithium-Ion Depth-of-Discharge Life Extension Planner
Model how limiting depth of discharge can extend lithium-ion battery life, quantify lifetime energy delivery, and compare cost per kilowatt-hour across different charge windows.
Off-Grid Refrigerator Battery Runtime Calculator | Estimate Fridge Runtime From Battery Capacity
Estimate how long an off-grid battery bank can run a refrigerator using battery capacity, system voltage, depth of discharge, inverter efficiency, and daily fridge energy use.
Portable Power Station Solar Recharge Time Calculator
Estimate how long a solar panel needs to recharge a portable power station using capacity, sun hours, and efficiency assumptions.
Regenerative Braking Energy Recovery Calculator (kWh & Cost Savings)
Estimate recoverable energy (kWh) and cost savings from regenerative braking using vehicle mass, speed change, regen efficiency, braking events per day, and electricity price.
Sand Battery Thermal Storage Calculator
Estimate energy stored in a sand heat battery, charging time, and heating duration for off-grid thermal storage experiments.
Tiny Home Solar Needs Calculator | Estimate Panels and Battery Storage
Estimate how many solar panels and how much battery storage a tiny home needs using daily energy use, panel wattage, sun hours, efficiency, and autonomy days.
Tornado Intensity Estimator - EF Scale Wind Speed Calculator
Estimate the Enhanced Fujita tornado rating from an observed wind speed in mph or km/h, review EF thresholds, understand limitations, and practice matching wind windows in an optional mini-game.
Wind Turbine Tip Speed Ratio Calculator - Optimize Rotor Efficiency
Calculate the blade tip speed and tip speed ratio of a wind turbine to help evaluate aerodynamic performance.