## Units of Measurement

### 1. Square meters (m²)

**Square meter** (m²) is a unit used to measure surface area. 1 m² is equal to the area of a square with sides of one meter.

### 2. Cubic meters (m³)

**Cubic meter** (m³) is a unit used to measure volume. 1 m³ is equal to the volume of a cube with sides of one meter.

### 3. Cubic centimeters (cm³)

**Cubic centimeter** (cm³) is a smaller unit used to measure volume. 1 cm³ is equal to the volume of a cube with sides of one centimeter.

### 4. Milliliter (ml)

**Milliliter** (ml) is a unit used to measure volume and is often used for liquids. 1 ml equals 1 cm³ volume.

### 5. Square centimeter (cm²)

**Square centimeter** (cm²) is a smaller unit used to measure surface area. 1 cm² is equal to the area of a square with sides of one centimeter.

## Conversion Formulas

### 1. Square meters (m²) and Square centimeters (cm²)

1 m² = 10,000 cm²

1 cm² = 0.0001 m²

### 2. Cubic meters (m³) and Cubic centimeters (cm³)

1 m³ = 1,000,000 cm³

1 cm³ = 0.000001 m³

### 3. Cubic meters (m³) and Liters (L)

1 m³ = 1,000 L

1 L = 0.001 m³

### 4. Liter (L) and Milliliter (ml)

1 L = 1,000 ml

1 ml = 0.001 L

### 5. Cubic Centimeters (cm³) and Milliliters (ml)

1 cm³ = 1 ml

1 ml = 1 cm³

## Sample Conversions

**Example 1:** How many cm² is 5 m²?

5 m² x 10,000 = 50,000 cm²

**Example 2:** How many m³ is 2 L?

2 L x 0.001 = 0.002 m³

**Example 3:** How many cm³ is 250 ml?

250 ml = 250 cm³

**Example 4:** How many cm³ is 3 m³?

3 m³ x 1,000,000 = 3,000,000 cm³

**Weight Units and Conversion Formulas**

## Weight Units

### 1. Kilogram (kg)

**Kilogram** (kg) is a basic unit used to measure weight. 1 kg is equal to 1000 grams.

### 2. Gram (g)

**Gram** (g) is a unit of weight that is one thousandth of a kilogram. 1 g is equal to 0.001 kilogram.

### 3. Milligram (mg)

**Milligram** (mg) is a unit of weight that is one thousandth of a gram. 1 mg is equal to 0.001 grams.

### 4. Ton (t)

**Ton** (t) is a unit used to measure large weights. 1 ton is equal to 1000 kilograms.

### 5. Libre (Pound) (lb)

**Libre** (Pound) (lb) is a unit of weight widely used in the British and American measurement systems. 1 lb equals approximately 0.4536 kilograms.

### 6. Ounce (oz)

**Ounce** (oz) is a unit used to measure smaller weights. 1 oz equals approximately 28.3495 grams.

## Conversion Formulas

### 1. Kilogram (kg) and Gram (g)

1 kg = 1000 g

1 g = 0.001 kg

### 2. Gram (g) and Milligram (mg)

1 g = 1000 mg

1 mg = 0.001 g

### 3. Kilogram (kg) and Ton (t)

1 kg = 0.001 t

1 t = 1000 kg

### 4. Libre (Pound) (lb) and Kilogram (kg)

1 lb = 0.4536 kg

1 kg = 2.2046 lb

### 5. Ounce (oz) and Gram (g)

1 oz = 28.3495 g

1 g = 0.0353 oz

## Sample Conversions

**Example 1:** How many grams is 5 kg?

5 kg x 1000 = 5000 g

**Example 2:**How many grams is 2000 mg?

2000 mg x 0.001 = 2 g

**Example 3:**How many kilograms are 3 tons?

3 tons x 1000 = 3000 kg

**Example 4:**How many kilograms is 10 lb?

10 lb x 0.4536 = 4.536 kg

**Example 5:** How many grams is 50 oz?

50 oz x 28.3495 = 1417.475 g

These formulas and example conversions will help you understand and convert different units of weight.