You can use these calculators to calculate call minutes, blocking, traffic and number of lines, how many lines for a trunk group, area codes, and more..

**3 Phase Delta & Wye Calculator | Watlow Engineering Tools
**

Input any two values and click "Calculate" to find values for other two.

**AWG
**

This Javascript web calculator will calculate the resistance and ampacity for the wire gauge you enter below.

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**Area unit conversion calculator: Ping conversions
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Convert ping to other area measurement units using an online calculator for area unit conversions.

**Caterpillar Power Generation
**

How much electric power do you need for your home or small business?

**Charge Conversion Table
**

Convert between units of charge.

**Current Conversion Table
**

Convert between current units.

**Electric charge unit converter - Chemistry Online Education
**

Electric charge unit converter (electric charge unit calculator) allows one to convert between different units of electric charge.

**Electric current unit converter - Chemistry Online Education
**

Electric current unit converter (electric current unit calculator) allows one to convert between different units of electric current.

**Electric dipole unit converter - Chemistry Online Education
**

Electric dipole unit converter (electric dipole unit calculator) allows one to convert between different units of electric dipole.

**Electrical resistance unit converter - Chemistry Online Education
**

Electrical resistance unit converter (electrical resistance unit calculator) allows one to convert between different units of electrical resistance.

**L/C Resonance Calculator
**

Calculated Resonant Frequency

**LED Series Resistor Calculator
**

Our LED calculator will help you determine the value of the current limiting series resistor when driving a single or an array of low-current LEDs.

**Linear Charge Density Conversion Table
**

Perform batch conversions between Linear Charge Density units.

**Ohm's Law Calculator | Watlow Engineering Tools
**

Input any two values and click "Calculate" to find values for other two.

**Online Conversion - Electric Capacitance
**

Conversions relating to capacitance. Farad, jar, puff, kilofarad, decifarad, ampere second/volt, coulomb/volt, more...

**Online Conversion - Electric Current Conversions
**

Convert between most electric current units. Ampere, milliampere, gilbert, siemens volt, volt/ohm, and more...

**Online Conversion - Electric Motor FLA/HP calculator
**

A Full Load Amps to Horsepower calculator for Electric AC Motors.

**R134a Refrigerant Pressure Temperature Calculator
**

This script determines the gas pressure based on temperature of R134a refrigerant.

**Resistor color code calculator
**

The calculator will display the value, the tolerance and performs a simple check to verify if the calculated resistance matches one of the EIA standard values.

**SMD resistor code calculator
**

This simple calculator will help you determine the value of any SMD resistor.

**Surface Charge Density Conversion Table
**

Perform conversions between Surface Charge Density units.

**Units converter for voltage
**

Convert between units of voltage.

**Voltage Drop Calculator - for single and 3 phase ac systems and dc systems
**

Use this calculator to estimate cable voltage drop for sizing conductors.

**Voltage, electric potential difference unit converter - Chemistry Online Education
**

Allows one to convert between different units of voltage, electric potential difference.

**Volume Charge Density Conversion Table
**

Perform batch conversions between Volume Charge Density units.