Kreemhunt
Submit a Tool

Percentage Calculator

Percentage Calculator solves three common percentage problems: what is X% of Y, X is what percent of Y, and percent change between two numbers — all in your browser.

No upload Instant Free No sign-up

What is X% of Y?

% of = —

X is what percent of Y?

is — % of

Percent change from A to B

→ = —

How to use the percentage calculator

  1. 1 Choose which type of percentage calculation you need.
  2. 2 Enter the numbers in the provided fields.
  3. 3 The result updates instantly — no button click required.

Frequently Asked Questions

Is this calculator accurate?
Yes — all calculations use standard IEEE 754 floating-point arithmetic in your browser, the same as any scientific calculator.
What is percentage change?
Percentage change is the relative difference between two values: ((new - old) / |old|) × 100. A positive result is an increase; negative is a decrease.
Can I use decimal numbers?
Yes — enter decimals with a period (e.g. 3.5) in any field.

More Text & Generator Tools

Word CounterCount words, characters, sentences, and paragraphs as you type.Password GeneratorGenerate strong, random passwords with custom length and character rules.Color ConverterConvert colors between HEX, RGB, and HSL formats instantly.Text Case ConverterConvert text to UPPERCASE, lowercase, Title Case, or Sentence case.Random Number GeneratorGenerate a random number within a custom min/max range.Text Diff CheckerCompare two blocks of text and highlight the differences line by line.Markdown to HTML ConverterConvert Markdown into clean HTML markup.Find and Replace ToolFind and replace text, with optional case-sensitive and whole-word matching.Text ReverserReverse text character-by-character or word-by-word.Random Color Palette GeneratorGenerate a random, harmonious 5-color palette with HEX codes.QR Code GeneratorGenerate a QR code for any URL, text, or contact info instantly.Word Frequency CounterFind the most common words in any text, sorted by frequency.Roman Numeral ConverterConvert numbers to Roman numerals and Roman numerals to numbers.
Browse all Text & Generator Tools →