math hub

Math Tools

Math tools work best when they remove friction instead of adding another layer of setup. This hub brings together the small calculators people reach for most often: percentages for discounts and growth, averages for lists of values, and ratios for simplified comparisons or quick proportions. Whether you are checking a sale price, summarizing scores, comparing performance numbers, or scaling a recipe or drawing, these pages are built for direct input and immediate answers. Each tool keeps the interface lightweight, highlights the result clearly, and stays focused on common everyday calculations rather than heavy spreadsheet-style workflows.

Core calculators

4 tools

percentage calculatorHandle percent-of, what-percent, and percentage change in one place.percentage changeCompare an old number and a new number to measure increase or decrease.average calculatorFind the mean of comma- or line-separated values instantly.ratio calculatorReduce ratios and solve basic proportions for scaling and comparisons.

Typical use cases

everyday math

Check discounts, tax values, price changes, and growth rates with percentage tools.

Summarize grades, survey scores, expenses, or measurements with a quick average.

Reduce ratios and solve proportions for scaling recipes, drawings, and comparisons.

Best starting points

popular

Start with the percentage calculator when you need flexible percentage math in one tool.

Use percentage change for before-and-after comparisons with a clear increase or decrease result.

Use average or ratio tools when you already have a small list or pair of numbers.