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.
Off-Grid Refrigerator Battery Runtime Calculator
Estimate how many days a battery bank can run an off-grid refrigerator using daily energy demand, battery capacity, depth of discharge, inverter losses, and solar recharge.
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.
Heat Pump vs Furnace Carbon Abatement Calculator
Compare a home's furnace baseline with a heat pump upgrade by estimating annual cost change, emissions avoided, and levelized carbon abatement cost.
Regenerative Braking Recovery Calculator: kWh Recovered and Energy Value
Calculate kinetic energy recovered by regenerative braking per slowdown, per day, and per year, with battery-charge efficiency and electricity-value estimates.
Sand Battery Thermal Storage Calculator with Standing Heat Loss
Size a sand heat battery: stored energy from mass, specific heat and temperature rise, plus charging time, standing loss through the insulation, and days of heating.
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 | Winter Driving Range Estimate
Estimate how freezing temperatures, highway speed, and cabin heating shrink an EV's winter driving range in your browser.
Green Ammonia Production Cost Calculator | Electricity, Water, and Cost per Ton
Estimate green ammonia operating cost from daily output, electrolyzer energy, Haber-Bosch energy, electricity price, and water price.
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 Browns-and-Greens C:N Balance Calculator
Estimate how much green compost material to add to browns so your pile lands near a target carbon-to-nitrogen ratio.
EV Cold Weather Range Loss Calculator | Winter Driving Range Estimate
Estimate how freezing temperatures, highway speed, and cabin heating shrink an EV's winter driving range in your browser.
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 | Electricity, Water, and Cost per Ton
Estimate green ammonia operating cost from daily output, electrolyzer energy, Haber-Bosch energy, electricity price, and water price.
Heat Pump vs Furnace Carbon Abatement Calculator
Compare a home's furnace baseline with a heat pump upgrade by estimating annual cost change, emissions avoided, and levelized carbon abatement cost.
Hydrogen Embrittlement Failure Risk Calculator for Pressurized Metal Parts
Screen hydrogen embrittlement failure risk for pressurized metal parts by combining hydrogen pressure, temperature, yield strength, exposure time, and coating effectiveness.
Hydrogen Storage Explosion Risk Score Calculator
Estimate a simplified hydrogen storage explosion risk score from tank pressure, volume, ambient temperature, ventilation, and ignition-source likelihood.
Induction vs Gas Cooktop Cost & Emissions Calculator
Estimate cooking cost and carbon emissions for the same meal on an induction cooktop or a gas stove using your own energy, price, efficiency, and emissions inputs.
Jewish Holiday Calendar Generator for Hebrew-Year Holiday Dates
Generate Jewish holiday dates for a Hebrew year, including Rosh Hashanah, Yom Kippur, Sukkot, Passover, and Shavuot, with leap-year context.
Lithium-Ion Battery Calendar Aging: Capacity Retention Planner
Model lithium-ion battery calendar capacity fade from storage temperature, state of charge, reference loss, and a chosen planning horizon.
Lithium-Ion DoD Cycle Life, Energy & Replacement Cost Planner
Plan lithium-ion charge windows by estimating DoD-adjusted cycle life, calendar-limited service, lifetime energy delivery, and replacement cost per kWh.
Off-Grid Refrigerator Battery Runtime Calculator
Estimate how many days a battery bank can run an off-grid refrigerator using daily energy demand, battery capacity, depth of discharge, inverter losses, and solar recharge.
Portable Power Station Solar Recharge Time Calculator | Solar Refill Time Estimate
Estimate how long a portable power station takes to recharge from solar panels using battery capacity, panel wattage, peak sun hours, and charging efficiency.
Regenerative Braking Recovery Calculator: kWh Recovered and Energy Value
Calculate kinetic energy recovered by regenerative braking per slowdown, per day, and per year, with battery-charge efficiency and electricity-value estimates.
Sand Battery Thermal Storage Calculator with Standing Heat Loss
Size a sand heat battery: stored energy from mass, specific heat and temperature rise, plus charging time, standing loss through the insulation, and days of heating.
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 rating from a tornado wind speed in mph or km/h, compare EF damage indicator thresholds, and run a damage-survey mini-game.
Wind Turbine Tip Speed Ratio Calculator - Rotor Efficiency Check
Calculate wind turbine blade tip speed and tip speed ratio from rotor radius, RPM, and wind speed to check whether a rotor is running in its expected aerodynamic range.