1. What is Percentage by Weight?

Percentage by weight is a way to express the concentration of a component in a mixture or the proportion of one quantity relative to another, measured in weight units (typically kilograms).

2. How Does the Calculator Work?

The calculator uses the percentage formula:

Where:

• Part — The weight of the component of interest (kg)
• Whole — The total weight of the mixture or reference quantity (kg)

Explanation: The formula calculates what portion (as a percentage) the part weight represents of the whole weight.

3. Importance of Percentage Calculation

Details: Percentage by weight is crucial in chemistry, cooking, manufacturing, and many other fields where precise composition measurements are needed.

4. Using the Calculator

Tips: Enter both part and whole weights in kilograms. Both values must be positive numbers, and the part cannot exceed the whole.

5. Frequently Asked Questions (FAQ)

Q1: Can I use different weight units?
A: Yes, as long as both part and whole are in the same units. The calculator displays kg but works with any weight unit.

Q2: What if my part is larger than the whole?
A: The calculator will show an error as percentages over 100% don't make sense in this context.

Q3: How precise is the calculation?
A: The calculator shows results to 2 decimal places for precision.

Q4: Can this be used for body fat percentage?
A: No, body fat percentage requires specialized calculations that account for multiple factors.

Q5: What's the difference between weight percentage and volume percentage?
A: Weight percentage uses mass measurements while volume percentage uses space occupied. They differ when components have different densities.