All Tools
Browse the full Toolhox catalog — 500+ free online tools across every category. No signup, no friction.
309 tools
Voltage Ripple Percentage Calculator Utility For Dc
Calculate voltage ripple percentage from peak-to-peak ripple and average DC voltage. Check relative power-supply fluctuations and compare measured values.
Voltage Drop Calculator For 48v Dc Solar | Toolhox
Calculate voltage drop for 48V DC solar cables using current, cable length, and conductor size. Estimate voltage loss and check wiring choices before installation.
Voltage To Joules Conversion Calculator Tool - Formula
Use the Voltage To Joules Conversion Calculator Tool to calculate electrical energy from volts and coulombs with E = V × Q. Check units and interpret results.
Voltage Drop Calculator For Sub Panel In Shed
Voltage Drop Calculator For Sub Panel In Shed helps estimate feeder voltage loss from current, cable distance, and wire size for better shed wiring planning.
Voltage Divider Calculator With Op Amp Output Calc
Calculate voltage divider output and estimate op-amp voltage from resistor values and input voltage. Review formulas, circuit assumptions, and practical limits.
Voltage Regulation Percentage Calculator Interactive
Calculate voltage regulation percentage from no-load and full-load voltage values. Apply the standard formula to evaluate transformer and power-supply voltage changes.
Voltage To Watts Calculator Dc Online | Dc Power
Calculate DC watts from voltage and current or resistance using standard electrical formulas. Check worked examples and power values for common DC circuits.
Voltage Source To Current Source Transformation Calculator
Convert voltage and series resistance into an equivalent current source with parallel resistance using the voltage source to current source transformation formula.
Voltage Across Capacitor Calculator Differential | Toolhox
Calculate capacitor voltage from an RC differential equation using resistance, capacitance, time, and initial/final voltage values. Review the formula and result.
Voltage Stabilizer Sizing Calculator For Ac Unit
Calculate AC voltage stabilizer capacity using electrical load, voltage, and power factor. Check startup demand and ratings to choose a suitable stabilizer.
Voltage To Dbu Converter Calculator Online Tool | Audio
Convert voltage to dBu with the 0.775 V RMS reference formula. Calculate audio signal levels in decibels and understand voltage readings for audio equipment.
Voltage Unbalance Ratio Calculator Ieee Online
Calculate IEEE voltage unbalance from three-phase voltage readings. Review the formula, worked example, and limits of magnitude-based results before assessing power quality.
Voltage Transformer Capacity Calculator For Motors
Estimate motor transformer capacity using power, voltage, phase, efficiency, and power factor. Review kVA formulas and motor-starting factors before selecting equipment.
Ev Charger Voltage Drop Calculator For Cable Planning
Estimate EV charger voltage drop from circuit current, cable length, supply voltage, and conductor resistance. Review voltage loss before installation.
3-Phase Aluminum Conductor Voltage Drop Calculator
Calculate three-phase aluminum conductor voltage drop from line voltage, load current, one-way cable length, and conductor impedance to assess feeder performance.
Hvac Seer2 Energy Savings Calculator - Compare Costs
Estimate HVAC energy use and savings from SEER2 ratings using cooling load, efficiency, and electricity cost inputs for clearer equipment comparisons.
Hvac Duct Cfm Calculator For Flexible Duct - Cfm Tool
Calculate flexible duct CFM from duct diameter and air velocity. Estimate airflow quickly in cubic feet per minute for HVAC duct planning and sizing.
Hvac Refrigerant Charge Calculator By Weight Online
Calculate HVAC refrigerant charge by weight using system target and current charge in lb or kg. Estimate refrigerant to add with a clear charge summary.
Hvac Return Air Grille Size Calculator - Cfm Tool
Calculate HVAC return air grille size from CFM, face velocity, and free area. Get required grille area plus practical sizing guidance for HVAC returns.
Hvac Electricity Cost Calculator By Zip Code - Energy Cost
Calculate HVAC electricity use and monthly cost by ZIP code with HVAC power, hours per day, days per month, and electricity rate. Review kWh and cost.
Hvac Heat Pump Balance Point Calculator - Thermal Point
Use the HVAC Heat Pump Balance Point Calculator to estimate outdoor balance temperature from building heat loss and heat-pump heating capacity data.
Hvac Air Changes Per Hour Calculator - Online Tool
Calculate HVAC air changes per hour from room dimensions and airflow. Use the ACH formula to estimate ventilation rates for HVAC planning.
Hvac Heat Load Calculator For Server Room | Toolhox
HVAC Heat Load Calculator for Server Room estimates cooling requirements from applicable server-room heat loads for preliminary HVAC capacity planning.
Hvac Gas Pipe Size Calculator Online - Pipe Sizing Tool
Use the HVAC Gas Pipe Size Calculator Online to estimate pipe size from appliance load and pipe length, then check sizing assumptions.
Page 6 of 13