Science cluster
Electronics & Electromagnetism Calculators
Size circuits and compute voltage, current, resistance, impedance, and magnetic-field values for electrical and RF design.
Top calculators
A short starting set for the most common electronics & electromagnetism calculators workflows.
Speaker Wire Gauge Run Length Calculator (AWG by Distance, Power & Impedance)
Calculate the minimum speaker wire gauge (AWG) for a given one-way run length, amplifier power, and speaker impedance to keep power loss under your chosen percentage.
EMF Exposure Calculator - Estimate Power Density and Field Strength
Compute electromagnetic field exposure from transmitter power, distance, and frequency using far-field formulas.
Hall Effect Voltage Calculator
Compute Hall voltage, current, magnetic field, carrier density, or thickness from the Hall effect relation V_H = I B / (n q t).
Battery Voltage to SOC Calculator: Li-ion, LiFePO4 & Lead-Acid
Estimate battery state of charge from a rested voltage reading. Presets for Li-ion, LiFePO4, and lead-acid packs convert pack voltage to per-cell voltage and SOC.
EV Charger Load Management Planner
Evaluate residential electrical service capacity, compare EV charging scenarios, and weigh panel upgrades against smart load management.
Magnetic Field of a Long Straight Wire Calculator
Calculate the magnetic field strength produced by a current-carrying long straight wire using Ampère's law.
Helmholtz Coil Field Calculator | Center Magnetic Field Estimate
Estimate the center magnetic field of a Helmholtz coil pair from coil radius, turns per coil, and current.
Wire Gauge Ampacity Calculator - Determine Safe Current
Calculate the safe current capacity of electrical wire based on gauge size, material, insulation rating, ambient temperature, and bundling.
All calculators in this cluster
Browse 12 calculators matched to this topic, or return to the Science category.
Battery Voltage to SOC Calculator: Li-ion, LiFePO4 & Lead-Acid
Estimate battery state of charge from a rested voltage reading. Presets for Li-ion, LiFePO4, and lead-acid packs convert pack voltage to per-cell voltage and SOC.
Electric vs Gas Dryer Cost Calculator
Compare the monthly energy cost of running an electric clothes dryer versus a gas dryer using local utility rates and laundry frequency.
EMF Exposure Calculator - Estimate Power Density and Field Strength
Compute electromagnetic field exposure from transmitter power, distance, and frequency using far-field formulas.
Ethernet Cable Attenuation & Distance Limit Calculator - Signal Loss
Calculate Ethernet cable attenuation (dB) and estimate maximum reliable cable length by category (Cat5e–Cat8), frequency, and signal loss limits. Ideal for p...
EV Charger Load Management Planner
Evaluate residential electrical service capacity, compare EV charging scenarios, and weigh panel upgrades against smart load management.
FM Radio Broadcast Range Calculator | Estimate Horizon-Limited Coverage
Estimate how far an FM station can reach by comparing transmitter power, frequency, antenna heights, and receiver sensitivity against free-space loss and the radio horizon.
Hall Effect Voltage Calculator
Compute Hall voltage, current, magnetic field, carrier density, or thickness from the Hall effect relation V_H = I B / (n q t).
Helmholtz Coil Field Calculator | Center Magnetic Field Estimate
Estimate the center magnetic field of a Helmholtz coil pair from coil radius, turns per coil, and current.
Magnetic Field of a Long Straight Wire Calculator
Calculate the magnetic field strength produced by a current-carrying long straight wire using Ampère's law.
Semiconductor Wafer Yield Calculator
Estimate die yield, good dies per wafer, and cost per die using defect density and die area.
Speaker Wire Gauge Run Length Calculator (AWG by Distance, Power & Impedance)
Calculate the minimum speaker wire gauge (AWG) for a given one-way run length, amplifier power, and speaker impedance to keep power loss under your chosen percentage.
Wire Gauge Ampacity Calculator - Determine Safe Current
Calculate the safe current capacity of electrical wire based on gauge size, material, insulation rating, ambient temperature, and bundling.