Electronics & Electrical Calculators

81 free electronics & electrical calculators in Other.

appliance running costEstimate the running cost of an appliance from its wattage, usage hours and electricity rate generally.
dishwasher energy costEstimate the running cost of an appliance from its wattage, usage hours and electricity rate generally.
fan running costEstimate the running cost of an appliance from its wattage, usage hours and electricity rate generally.
heater running costEstimate the running cost of an appliance from its wattage, usage hours and electricity rate generally.
home cooling costEstimate the running cost of an appliance from its wattage, usage hours and electricity rate generally.
home heating fuelEstimate the running cost of an appliance from its wattage, usage hours and electricity rate generally.
hot tub heating costEstimate the running cost of an appliance from its wattage, usage hours and electricity rate generally.
lighting energy costEstimate the running cost of an appliance from its wattage, usage hours and electricity rate generally.
refrigerator energy costEstimate the running cost of an appliance from its wattage, usage hours and electricity rate generally.
room heating costEstimate the running cost of an appliance from its wattage, usage hours and electricity rate generally.
washing machine energy costEstimate the running cost of an appliance from its wattage, usage hours and electricity rate generally.
555 Timer CalculatorCalculate frequency and duty cycle for a 555 timer in astable mode.
AC Power CalculatorCalculate real, apparent and reactive AC power from voltage, current and power factor.
ADC Resolution CalculatorCalculate ADC step size, dynamic range and quantisation error for a given resolution.
Alternator Output CalculatorCalculate alternator output power, current and derating for temperature and power factor.
Apparent Power CalculatorCalculate apparent power in volt-amperes and the capacity it demands from supply equipment.
Band Pass Filter CalculatorDesign a band-pass filter from its lower and upper cutoff frequencies.
Band Stop Filter CalculatorDesign a band-stop or notch filter to reject a specific frequency band.
Battery Capacity CalculatorSize a battery bank in amp-hours for a required load, runtime and depth of discharge.
Battery Charging Current CalculatorDetermine the correct charging current for a battery from its capacity and C-rate.
Battery Charging Time CalculatorEstimate charging time from battery capacity, state of charge and charger current.
Busbar Size CalculatorSize a copper busbar for a given current, checking current density and temperature rise.
Cable Resistance CalculatorCalculate conductor resistance from material, length and cross-sectional area.
Cable Size CalculatorSelect a cable size that satisfies both current capacity and voltage drop.
Cable Voltage Drop CalculatorCalculate voltage drop along a cable and check it against the permitted limit.
Capacitive Reactance CalculatorCalculate capacitive reactance and the current a capacitor passes at a given frequency.
Conductor Resistance CalculatorCalculate resistance, current density and heating for a conductor at a given load.
Current Divider CalculatorCalculate how current splits between parallel branches.
Current Draw CalculatorWork out the current an appliance draws and whether the circuit can support it.
DC Power CalculatorCalculate DC power, energy and running cost from voltage and current.
Electrical Power CalculatorCalculate electrical power from any two of voltage, current and resistance.
Electricity CalculatorWork out an appliance's electricity use and what it costs per day, month and year.
Filter Cutoff Frequency CalculatorCalculate the corner frequency of RC and LC filters and the roll-off they achieve.
Fuse SizeFree Fuse Size calculator with clear step-by-step results.
Generator Frequency CalculatorCalculate generator output frequency from rotational speed and pole count.
Generator Voltage CalculatorCalculate generator output voltage from flux, speed and winding turns.
High Pass Filter CalculatorDesign a high-pass filter and calculate its response at any frequency.
Impedance CalculatorCalculate the total impedance of a series RLC combination and its phase angle.
Inductive Reactance CalculatorCalculate inductive reactance and the current an inductor passes at a given frequency.
Inverting Op Amp CalculatorDesign an inverting amplifier stage and check its input impedance and offset.
LED Power CalculatorCalculate LED power consumption, efficacy and the running cost of a lighting installation.
LED Resistor CalculatorCalculate the series resistor needed to drive an LED at its rated current.
LED Series Resistor CalculatorSize series resistors for LED strings and arrays, including power rating.
Low Pass Filter CalculatorDesign a low-pass filter and calculate its response at any frequency.
Motor Current CalculatorCalculate motor full-load current from its rating, voltage, efficiency and power factor.
Motor Efficiency CalculatorCalculate motor efficiency and the annual cost of its losses.
Motor Horsepower CalculatorConvert motor ratings between kilowatts and horsepower, including input power.
Motor Power CalculatorConvert between motor input power, shaft output power and horsepower.
Motor Slip CalculatorCalculate induction motor slip and what it reveals about loading.
Motor Starting Current CalculatorEstimate motor inrush current and the voltage dip it causes on starting.
Motor Synchronous Speed CalculatorCalculate synchronous speed from supply frequency and pole count.
Motor Torque CalculatorConvert between motor power, speed and torque, and check starting torque.
Non Inverting Op Amp CalculatorDesign a non-inverting amplifier stage with high input impedance.
Ohm's LawFree Ohm's Law calculator with clear step-by-step results.
Ohms Law CalculatorSolve voltage, current, resistance and power from any two known values.
Op Amp Gain CalculatorCalculate op-amp gain and check it against the gain-bandwidth product.
Peak DemandFree Peak Demand calculator with clear step-by-step results.
Power Factor CalculatorCalculate power factor from real and apparent power, and the phase angle it implies.
Power Factor Correction CalculatorSize the capacitor bank needed to raise power factor to a target value.
Q Factor CalculatorCalculate the quality factor of a resonant circuit and the selectivity it provides.
RC Circuit CalculatorAnalyse a series RC circuit for impedance, phase angle and filter response.
RC Time Constant CalculatorCalculate the RC time constant and the charge or discharge curve it produces.
Reactance CalculatorCalculate inductive and capacitive reactance across a frequency and find where they balance.
Reactive Power CalculatorCalculate reactive power and the correction needed to reduce it.
Real Power CalculatorCalculate the real power actually converted into useful work in an AC circuit.
Resistor CalculatorDecode resistor colour bands and compute series and parallel networks.
Resonant Frequency RLC CalculatorCalculate the resonant frequency of an LC or RLC circuit and the component values to tune it.
RL Circuit CalculatorAnalyse a series RL circuit for impedance, time constant and phase angle.
RLC Circuit CalculatorAnalyse a series RLC circuit for resonance, bandwidth and damping.
Single Phase Power CalculatorCalculate single-phase power, current and cable loading from load and power factor.
Three Phase Power CalculatorCalculate three-phase power and line current, including the √3 relationship.
Timer IC CalculatorCalculate timing component values for a monostable timer pulse.
Transformer Efficiency CalculatorCalculate transformer efficiency across load levels, including no-load and copper losses.
Transformer Regulation CalculatorCalculate voltage regulation between no-load and full-load conditions.
Transformer Size CalculatorSize a transformer in kVA for a given load, with headroom and diversity applied.
Transformer Turns Ratio CalculatorCalculate transformer turns ratio and the voltage and current transformation it produces.
Voltage Divider CalculatorCalculate the output voltage of a resistive divider and its loading effects.
Voltage Drop CalculatorCalculate voltage drop over a wire run and check it against code limits.
Wind Turbine OutputFree Wind Turbine Output calculator with clear step-by-step results.
Wire Ampacity CalculatorDetermine the derated current-carrying capacity of a cable in its installed conditions.
Wire Gauge CalculatorConvert between AWG and cross-sectional area, and check ampacity.