Percent to PPM Converter

How to Convert Between Percent and PPM

Converting between percent and parts per million (PPM) is a common task in chemistry, environmental science, and many other fields. This calculator helps you easily switch between these two concentration units.

What are the Formulas?

The formulas for converting between percent and PPM are:

\[ \text{PPM} = \text{Percent} \times 10,000 \]

\[ \text{Percent} = \frac{\text{PPM}}{10,000} \]

Where:

• PPM is the concentration in parts per million
• Percent is the concentration as a percentage

What are the calculation steps?

1. Identify whether you're starting with percent or PPM
2. If converting from percent to PPM, multiply the percent by 10,000
3. If converting from PPM to percent, divide the PPM by 10,000

Example Calculation

Let's convert 0.5% to PPM:

Step 1: Identify the starting value

• Percent concentration = 0.5%

Step 2: Apply the formula

PPM = 0.5 × 10,000 = 5,000 PPM

Therefore, 0.5% is equal to 5,000 PPM.

Diagram of Percent and PPM

The following diagram illustrates the relationship between percent and PPM:

This diagram shows how percent and PPM relate on a concentration scale. Note that 1% equals 10,000 PPM, which is why we multiply or divide by 10,000 in our conversions.