Percentage Change Calculator - Calculate Increase & Decrease

Free online percentage calculator. Calculate percentage increase, decrease, difference and more. Fast, accurate results for all your percentage calculations.

Calculate percentage decrease instantly. Find the percent decrease between two numbers. Ideal for price drops, value loss, and reduction calculations.

Calculate percentage increase instantly. Find the percent increase between two numbers. Perfect for salary raises, price increases, and growth calculations.

Calculate percentage difference between two numbers instantly. Find the relative difference as a percentage. Useful for comparisons and analysis.

Calculate your GPA instantly. Support for weighted and unweighted GPA. Multiple courses, cumulative GPA, and grade tracking.

Calculate your final grade with our free grade calculator. Determine what you need on your final exam to achieve your desired course grade.

Generate secure random passwords instantly. Customizable length, characters, and strength. Copy to clipboard. Free password generator.

Free random number generator. Generate random numbers within a custom range. Choose quantity, unique numbers, and sorting options. No download required.

Calculate discount percentage and final sale price instantly. Find out how much you save with percentage discounts. Perfect for shopping and sales.

Comprehensive scientific calculator with trigonometry, logarithms, exponents, statistics, and more. Free online scientific calculator for students, engineers, and professionals.

Test password strength instantly. Check password security, entropy, and get improvement tips. Essential for online security.

Generate QR codes instantly. Create QR codes for URLs, text, and contact info. Customizable colors and sizes. Free download.

Generate random words instantly. Choose word count, starting letters, and word length. Perfect for writers, students, and creative projects.

Convert units instantly. Length, weight, volume, temperature, and more. Metric to imperial converter. Fast, accurate conversions.

Convert between improper fractions and mixed numbers.

Perform a t-test to compare means of two samples.

Calculate the arithmetic mean (average) of any dataset. Enter comma-separated numbers and get instant results with sum, count, and mean.

Calculate the sum of multiple numbers instantly. Add comma-separated values, see running totals, partial sums, and average.