Percentage Calculator

Solve every percent problem: of, increase, decrease, change and more.

Percentage Calculator handles every percent problem people actually run into in real life: what is X percent of Y, what percent is X of Y, what is the percent increase from X to Y, what is the percent decrease from X to Y, and what is X plus or minus Y percent. Each case has its own dedicated input row so you do not have to remember which formula maps to which scenario. Shoppers use it to compute discount prices and check whether a sale is actually as good as the sticker claims. Investors use it to calculate portfolio gains, dividend yields, and compounded returns. Students use it to solve homework problems and check answers. Restaurant tippers use it to figure out 18 or 20 percent on a bill without trusting a server's math. Marketers use it to compute conversion rate changes between A and B test variants.

How Percentage Calculator works

Percentage Calculator is a free browser-based utility from Salah Tools Hub. It is designed to give you an immediate result without an account, subscription, or upload to a remote server.

Enter your information into the tool after the page loads, review the result, and use the available copy or download controls. Your input stays on your device while the tool is running.