Percentage Calculator

Calculate percentages, find percentage changes, and solve percentage problems.

Percentage Change Calculator

Calculate the percentage increase or decrease between two values. Perfect for tracking growth, price changes, or performance metrics.

Percent Off Calculator

Calculate discounts and savings. Find out how much you'll save and the final price after a percentage discount.

Tip Percentage Calculator

Calculate tip amounts, total bill, and split the cost between multiple people. Perfect for restaurants and services.

Test Grade Calculator

Calculate your test grade percentage and letter grade. Simply enter points earned and points possible.

Reverse Percentage Calculator

Find the original amount when you know a percentage and the result. Useful for finding original prices after discounts or working backwards.

Add/Subtract Percentage Calculator

Quickly add or subtract a percentage from a value. Perfect for adding tax, applying markups, or making quick adjustments.

Compound Percentage Calculator

Calculate the result after multiple percentage changes applied sequentially. Ideal for tracking cumulative changes over time.

CSV/JSON Converter

Convert between CSV and JSON formats. Transform spreadsheet data into structured JSON or vice versa.

JSON to CSV Converter

Convert JSON data to CSV format. Transform structured data into spreadsheet-compatible CSV format.

Diff Checker

Compare two texts and find the differences. Perfect for code, documents, or any text comparison.

QR Code Generator

Generate QR codes from text or URLs. Create scannable codes for sharing links, contact info, and more.

Word Counter

Count words, characters, sentences, and paragraphs in text. Perfect for writers, students, and content creators.

List Sorter

Sort lists alphabetically or numerically. Paste your list and get it sorted instantly.