## convert mm2 to m2 and m2 to mm2

# Free online calculator to convert mm2 to m2 and m2 to mm2 (all in one)

This calculator is based on the conversions:

**1,000 mm = 1 m**-
**1 mm2 = 1 x 10**^{-6}m2 -
**1 m2 =1 x 10**^{6}mm

This calculator is based on the conversions:

**1,000 mm = 1 m**-
**1 mm2 = 1 x 10**^{-6}m2 -
**1 m2 =1 x 10**^{6}mm

This calculator is based on the conversions:

**1 kcmil = 506.7 × 10**^{-3}mm^{2}**1 mm2 = 1.97 kcmil**

pogness Batteries, Calculators, Solar panels

Use this online calculator to work out the estimated **battery bank (Ah)** and **solar array size (watts)** for your **12 volt** off-grid Solar application. This is basically the battery size and solar panel size calculators combined into one tool. To use the calculator you need:

**average sunshine**hours for your location- the
**combined****power consumption**of your appliance(s) (W). Check the power brick label for the Volts and Amps. To obtain the Watts, use the formula**Volts x Amps = Watts.** - how many
**hours**your appliance will be running for

**Note: **This is for a **12 volt system** only. The results of this calculator should only serve as a **guide**.

Use this online calculator to convert from either ** mils to inches **or **inches to mils.**

**Note: **The results of this calculator should only serve as a **guide**. We shall therefore not *accept any liability resulting from the use of this calculator. Always consult a competent professional if in doubt.*

You can convert mils to inches and from inches to mils using the conversions below:

*1 mil = 0.001 inches (in)**1 inch= 1,000 mils*

Use this online calculator to convert from either **circular mils (cmils) to square mils **or **square mils to circular mils (cmils)**

**Note: **The results of this calculator should only serve as a **guide**. We shall therefore not *accept any liability resulting from the use of this calculator. Always consult a competent professional if in doubt.*

You can convert circular mils (cmils) to square mils and from square mils to circular mils using the conversions below:

*1 square mil = 1.27388 circular mils (cmils)**1 circular mil(cmil) = 0.785 square mils*

Use this online calculator to convert from either **mils to mm** or **mm to mils.**

**Note: **The results of this calculator should only serve as a **guide**. We shall therefore not *accept any liability resulting from the use of this calculator. Always consult a competent professional if in doubt.*

You can convert mm to mils and from mils to mm using the conversions below:

*1 mm = 39.37 mils**1 mil = 0.0254 mm*

Use this free online calculator to quickly and accurately convert:

- kcmils to sq.mm (mm²)
- kcmils to mm
- kcmils to inches

The kcmils converter above is based on the following calculations:

- 1 kcmil= 1,000 mils
- For kcmil to inch, 1 kcmil = 1 x 10 –
^{9 }sq. inch - For kcmil to mm, 1 kcmil = 645.2 x 10 –
^{9 }sq. mm

Use this free online calculator to quickly and accurately convert:

- mils to cmils
- mils to inches (in)
- mils to mm

This mils calculator above is based on the following conversions:

- For mils to cmils, 1 cmil = (length in mils)² .
- 1 inch (in) = 1000 mils

*For example, if the diameter of a wire is 240 mils (0.24 inches), then the area of the wire based on its diameter in circular mils is (diameter of the wire in mils)² = 240² = 57,600 cmils or 57.6 kcmils.*

- For mils to inches, 1,000 mils = 1 inch
- For mils to mm, (length in mils) x0.0254

pogness Calculators, Wire sizes

A circular mil represents the *area of a circle or conductor* that has a diameter of **1 mil**. Use this online converter to quickly convert **mils (mils)** to **circular mils (cmils)**.

In addition, you can also use the calculator to:

- convert mm to circular mils (cmils)
- convert inches to circular mils (cmils)
- convert feet to circular mils (cmils)

**How to use the calculator: **

Choose the unit you want to convert **from** – by selecting either *mils, mm, inches or feet* and specify the quantity. Hit calculate to get the equivalent in **circular mils (cmils)**!

To calculate circular mils, **c,** from mils, use the formula,** c= d²** where d is the diameter of the wire in mils.

For example, if the diameter of a conductor is 3 mils, then the circular mils equivalent is **3 x 3 = 9 circular mils (cmil). **You can work out circular mils from diameter in other units such as inches, mm and feet.

Similarly, you can use the converter above to workout the circular mils from equivalent diameters in either mm, inches or feet.

To workout circular mils from inches, we use the conversion, *1 inch = 1,000,000 circular mils*

To workout circular mils from mm, we use the conversion, *1 mm = 39,370 circular mils*

To workout circular mils from feet, we use the conversion, *1 foot = 83,333.3 circular mils*

A square mil on the other hand is the area of a square whose sides are 1 mil.

Now that we know what they are, we can easily get the equivalent area in circular mils from

square mils and vice versa.

To convert square mils to circular mils, use the formula: **1 circular mils = 1.27323 * square mils.**

To convert circular mils to the equivalent area in square mils, use the formula: **1 square mils = circular mils / 1.27323**

pogness Calculators, Wire sizes

This online calculator can be used to estimate the voltage drop (volts), voltage drop (%) and the final voltage after the voltage drop for DC circuits.

Formula for calculating voltage drop

This voltage drop calculator is based on the formula, **voltage drop = I * R** where:

- I is the DC current flowing in the circuit
- R is the direct current resistance for the wire.

This calculator uses DC resistance from NEC 2017, Table 8 and assumes conductor temperature of 75°C (167°F), uncoated single and 7 strand copper and aluminum wire.

**Note:** The results of this calculator should only serve as a guide. We shall therefore not

accept any liability resulting from the use of this calculator. Always consult the manufacturer specification’s or a competent professional if unsure.

Voltage drops result in power wastage along the cable or wire and a reduced voltage which

may cause the appliance not to work properly.

**1.Longer cable runs increase voltage drops**

For example, at 13.8V, an appliance drawing 5A over *one-way length of 10 feet* of 14 AWG wire results in a voltage drop of 2.25%.

Should this distance double (20 feet), then the voltage drop would nearly double to 4.57% increasing the power wastage and may result in the appliance not working properly.

**Fix:** To maintain the voltage drop (2%) while maintaining the cable length, increase the wire gauge. In this case, using 10AWG would keep the voltage drop to 1.81%.

**2.Wrongly sized wire gauges for large appliances increase voltage drops**

Larger appliances (larger loads) require more current which results in a bigger voltage drop for the same distance.

To reduce the voltage drop, you need to increase the size of wire (use a lower gauge number).

*For example:*

For example, at 13.8V, an appliance drawing 5A over 10 feet return of 14 AWG wire results in a voltage drop of 2.25%.

Should a larger appliance that draws twice the current (10 A), then the voltage drop would nearly double to 4.57% increasing the power wastage and may result in the appliance not working properly.

**Fix:**

*1. If this is not possible to move the load (reduce the cable length, you may use a large diameter cable, such as 12AWG). This reduces the voltage drop to 2.9V.*

*2. Increase the supply voltage to 24V if the load can take it which reduces the voltage drop to 2.6%.*

**In summary**, you can minimize voltage drops by selecting a suitable wire gauge and length for a given appliance (load) such that the voltage at the end of the circuit satisfies the appliance’s requirements.

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