Percentage Calculator
Calculate percentages, percentage increase, decrease, and percent values instantly
Calculator
Select a percentage calculation type, enter values, and get instant results.
About the Percentage Calculator
The Percentage Calculator helps you quickly solve common percentage-related math problems across engineering and everyday calculations. It can compute percentage of a number, determine what percent one value is of another, and apply percentage increases or decreases instantly. This tool is ideal for students, professionals, and anyone who needs fast and accurate percentage calculations.
What You Can Calculate
- X% of Y: Find the portion or value represented by a given percentage.
- X is what percent of Y: Calculate ratios and percentage comparisons between two values.
- Percentage Increase: Determine how much a value grows after applying a percentage.
- Percentage Decrease: Calculate reductions or markdowns based on a given percentage.
Formulas Used in the Calculator
The calculator uses standard arithmetic formulas for all percentage operations:
- Percentage of a Number: (X ÷ 100) × Y
- Percentage Comparison: (X ÷ Y) × 100
- Percentage Increase: Y × (1 + X ÷ 100)
- Percentage Decrease: Y × (1 − X ÷ 100)
How to Use the Calculator
- Select the type of percentage calculation you want to perform.
- Enter the values for X and Y.
- The calculator instantly displays the computed result.
Applications of Percentage Calculations
Percentage calculations play an important role in many areas of engineering analysis, including tolerance evaluation, efficiency calculations, load variations, material utilization, and performance benchmarking. Engineers routinely use percentage relationships to compare design parameters, analyze system improvements or losses, and quantify deviations from expected values. This calculator provides fast, accurate percentage results that support design decisions, data interpretation, and technical assessments across a wide range of engineering applications.