Percentage Calculator

Percentage / Discount / Profit Margin Calculator

Basic Percentage

What is B% of A?

% =-

A is what percent of B?

of-%

What is the percent change from B to A?

than

decrease-%

Usage Instructions

Features

Percentage calculator with basic percentage, discount conversion and profit margin. Calculate percentages, proportions, changes, shopping discounts and profit margins.

Steps

Use Basic tab for percentage, proportion, change → Switch to Discount tab for price after discount → Use Profit tab for profit margins.

Notes

All calculations are done locally in the browser; results rounded to 2 decimal places; discount 8.5 means 15% off; negative profit rate means loss.