Every calculator you need,
in one place
Free online calculators and tools for money, health, maths, text, images and web development. Fast, private and easy to use on any device.
Most popular tools
EMI Calculator (Loan Calculator)
Calculate the monthly EMI, total interest and repayment schedule of a loan.
SIP Calculator
Estimate how much a monthly SIP investment could grow to over time.
GST & Sales Tax Calculator
Add tax to a price or remove it, with the CGST and SGST split.
BMI Calculator
Check your body mass index and the healthy weight range for your height.
Age Calculator
Find your exact age in years, months and days, and your next birthday.
Percentage Calculator
Work out percentages, percentage change and increases or decreases.
Word & Character Counter
Count words, characters, sentences and reading time as you type.
Image Compressor
Make photos smaller in file size while keeping them looking good.
QR Code Generator
Turn any link or text into a QR code and download it as a PNG image.
Unit Converter
Convert length, weight, temperature, area, volume, speed and data units.
JSON Formatter & Validator
Beautify, minify and validate JSON with clear error messages.
Password Generator
Create strong, random passwords with the length and characters you choose.
Browse by category
All 135 tools
Image Tools
View all 11 →QR Code Generator
Turn any link or text into a QR code and download it as a PNG image.
Image Compressor
Make photos smaller in file size while keeping them looking good.
Image Resizer
Change the width and height of a picture in pixels or by percentage.
Image Format Converter
Convert pictures between JPG, PNG and WebP formats in one click.
Rotate & Flip Image
Rotate a photo by 90° or 180°, or mirror it horizontally or vertically.
Photo Filters
Adjust brightness and contrast or apply black-and-white and sepia effects.
Favicon Generator
Make favicon.ico and app icons for your website from an image or a letter.
Image Color Picker
Click any point in a picture to get its HEX, RGB and HSL color code.
Image to Base64
Convert an image into a Base64 data URI for HTML, CSS or JSON.
Base64 to Image
Paste a Base64 string to see the picture and save it as an image file.
Placeholder Image Generator
Create dummy images of any size and color for mockups and wireframes.
Design & CSS Tools
View all 14 →Color Picker
Pick a color visually and get its HEX, RGB, HSL and CMYK codes.
RGBA to HEX
Convert RGBA colors with transparency into 8-digit HEX codes.
RGB to HSL
Convert RGB colors to hue, saturation and lightness, step by step.
HSL to RGB
Convert hue, saturation and lightness values into RGB and HEX codes.
Color Palette Generator
Create matching color schemes from one base color using color theory.
Color Contrast Checker
Test whether text and background colors are readable and meet WCAG rules.
CSS Gradient Generator
Design linear and radial CSS gradients with a live preview.
CSS Box Shadow Generator
Build CSS box-shadow effects visually and copy the code.
CSS Border Radius Generator
Set rounded corners for each side of a box and copy the CSS.
CSS Animation Generator
Create ready-made CSS keyframe animations and copy the code.
CSS Cursor Viewer
Preview every CSS cursor style by hovering, and copy the code.
Z-Index Tester
Experiment with overlapping boxes to see how CSS z-index works.
CSS Unit Converter
Convert between px, rem, em, pt, %, vw and vh for CSS.
Aspect Ratio Calculator
Find the ratio of any size or work out a missing width or height.
Developer Tools
View all 17 →JSON Formatter & Validator
Beautify, minify and validate JSON with clear error messages.
SQL Formatter
Turn long, messy SQL queries into clean, readable code.
HTML Minifier
Shrink HTML by removing comments and unnecessary whitespace.
CSS Minifier
Compress CSS stylesheets to make your website load faster.
JavaScript Minifier
Compress JavaScript files safely using the Terser engine.
HTML Entity Encoder & Decoder
Convert special characters to HTML entities and back again.
URL Encoder & Decoder
Percent-encode text for URLs or decode %20-style links back to text.
URL Parser
Split any web address into its parts and list its query parameters.
JSON to CSV Converter
Convert JSON arrays into CSV files that open in Excel or Google Sheets.
CSV to JSON Converter
Turn CSV and spreadsheet data into clean JSON arrays.
JSON to XML Converter
Convert JSON objects and arrays into well-formed, indented XML.
XML to JSON Converter
Parse XML documents, feeds and API responses into readable JSON.
Markdown to HTML Converter
Write Markdown and get clean HTML with a live preview.
Text to HTML Converter
Turn plain text into HTML paragraphs, line breaks, lists and links.
Regex Tester
Test regular expressions live with highlighted matches and groups.
UUID Generator
Generate unique IDs (UUID v4 or v7) one at a time or in bulk.
JWT Decoder
Read the header and payload of a JSON Web Token and check its expiry.
Encoding & Security Tools
View all 19 →Base64 Encoder & Decoder
Encode text to Base64 or decode Base64 strings back to readable text.
Base32 Encoder & Decoder
Encode and decode Base32 text, as used in 2FA secret keys.
Text to Binary Converter
Translate text into 0s and 1s, or binary code back into text.
Text to Hex Converter
Convert text into hexadecimal byte values for code and debugging.
Hex to Text Converter
Decode hexadecimal byte values back into readable text.
Text to ASCII Codes
Show the ASCII or Unicode number of every character in your text.
ASCII to Text Converter
Turn a list of ASCII or Unicode code numbers back into text.
SHA-256 Hash Generator
Create SHA-256 hashes of text or files and verify download checksums.
SHA-512 & HMAC Generator
Create SHA-512 hashes and HMAC signatures with a secret key.
Caesar Cipher
Encode and decode the classic Caesar shift cipher, including ROT13.
Atbash Cipher
Encode text by reversing the alphabet: A↔Z, B↔Y, C↔X.
Vigenère Cipher
Encrypt and decrypt messages with a keyword using the Vigenère cipher.
ROT47 Cipher
Scramble letters, numbers and symbols with the ROT47 rotation cipher.
Morse Code Translator
Translate text to Morse code and back, and listen to it as sound.
Text to Braille Converter
Convert English text into Braille dots (Grade 1) and back.
NATO Phonetic Alphabet Converter
Spell names and codes clearly with Alfa, Bravo, Charlie words.
Password Generator
Create strong, random passwords with the length and characters you choose.
Password Strength Checker
Check how strong a password is and how long it might take to crack.
Random String Generator
Generate random tokens, coupon codes and keys with any character set.
Text Tools
View all 15 →Word & Character Counter
Count words, characters, sentences and reading time as you type.
Case Converter
Change text to UPPERCASE, lowercase, Title Case, camelCase and more.
Text Compare (Diff Checker)
Compare two versions of a text and highlight every difference.
Find and Replace Text
Find a word or phrase in your text and replace every match at once.
Remove Extra Spaces & Line Breaks
Clean up messy text: remove double spaces, empty lines and broken line breaks.
Duplicate Line Remover
Delete repeated lines from lists, keywords, emails and data.
Sort List Online
Sort lines alphabetically, numerically or by length in one click.
Reverse Text
Write text backwards, reverse word order, or check for palindromes.
Upside Down Text Generator
Flip text upside down with special characters you can paste anywhere.
Cursive Text Generator
Turn normal text into elegant cursive script you can copy and paste.
Old English Text Generator
Convert text into gothic Old English (Fraktur) style letters.
Lorem Ipsum Generator
Generate Lorem Ipsum dummy text by paragraphs, sentences or words.
Readability Score Checker
Find out how easy your English text is to read, with grade-level scores.
Text to Speech
Have your browser read any text aloud, with adjustable voice and speed.
Online Notepad
A distraction-free notepad that saves your notes automatically.
SEO Tools
View all 7 →Meta Tag Generator
Create the title, description, Open Graph and Twitter tags for a page.
Google SERP Snippet Preview
Preview how your page title and description appear in Google results.
Keyword Density Checker
Find your most-used words and phrases and check keyword density.
URL Slug Generator
Convert titles into clean, SEO-friendly URL slugs.
Robots.txt Generator
Create a robots.txt file that tells search engines what to crawl.
XML Sitemap Generator
Build a valid sitemap.xml file from a list of your page URLs.
Schema Markup Generator
Create JSON-LD structured data for businesses, articles, products and FAQs.
Math Calculators
View all 16 →Percentage Calculator
Work out percentages, percentage change and increases or decreases.
Percentage Error Calculator
Find how far a measured value is from the true value, as a percentage.
Fraction to Decimal Converter
Convert fractions to decimals and decimals to simplest fractions.
Scientific Notation Converter
Write very large or very small numbers in scientific notation.
Number Base Converter
Convert numbers between binary, octal, decimal, hex and other bases.
Number to Words Converter
Write any amount in words, in lakh-crore or million-billion style.
Roman Numeral Converter
Convert numbers to Roman numerals (I, V, X…) and back.
Prime Number Checker
Check if a number is prime and list primes in any range.
Prime Factorization Calculator
Break a number into prime factors and list all of its divisors.
Factorial, Permutation & Combination Calculator
Calculate n! exactly, plus permutations (nPr) and combinations (nCr).
Fibonacci Sequence Generator
List Fibonacci numbers, find the nth term and test any number.
GCD and LCM Calculator
Find the HCF/GCD and LCM of two or more numbers with steps.
Quadratic Equation Solver
Solve ax² + bx + c = 0 with steps, roots and a graph.
Statistics Calculator
Get mean, median, mode, standard deviation and more for a list of numbers.
Area and Volume Calculator
Find area, perimeter, volume and surface area of common shapes.
Physics Formula Calculator
Solve force, work, power, energy, momentum, density and Ohm's law.
Finance Calculators
View all 10 →EMI Calculator (Loan Calculator)
Calculate the monthly EMI, total interest and repayment schedule of a loan.
SIP Calculator
Estimate how much a monthly SIP investment could grow to over time.
Simple & Compound Interest Calculator
Compare simple and compound interest for any deposit or investment.
CAGR Calculator
Work out the average yearly growth rate between two values.
Inflation Calculator
See how much things will cost in the future and what your money will be worth.
Discount Calculator
Find the final price and savings after a discount, or the original price.
Profit Margin Calculator
Calculate profit, margin and markup, or the price for a target margin.
GST & Sales Tax Calculator
Add tax to a price or remove it, with the CGST and SGST split.
Tip Calculator & Bill Splitter
Work out the tip and split a restaurant bill between friends.
Fuel Cost Calculator
Find out how much fuel a trip needs and what it will cost.
Health & Fitness Calculators
View all 6 →BMI Calculator
Check your body mass index and the healthy weight range for your height.
BMR & Calorie Calculator
Estimate how many calories your body burns at rest and in a day.
Body Fat Percentage Calculator
Estimate body fat percentage with a measuring tape (U.S. Navy method).
Ideal Weight Calculator
Estimate a healthy target weight for your height using several formulas.
Calories Burned Calculator
Estimate the calories you burn during exercise and daily activities.
Daily Water Intake Calculator
Estimate how much water you should drink each day.
Date & Time Tools
View all 9 →Age Calculator
Find your exact age in years, months and days, and your next birthday.
Days Between Dates
Count days and working days between dates, or add days to a date.
Time Difference Calculator
Calculate hours and minutes between two times, including night shifts.
Unix Timestamp Converter
Convert Unix epoch timestamps to readable dates and back.
Time Zone Converter
Convert a meeting time between India and other world time zones.
Leap Year Checker
Check if a year is a leap year and list leap years in any range.
Online Stopwatch
A precise stopwatch with lap and split times.
Countdown Timer
Count down minutes and seconds or to a date, with an alarm at zero.
Pomodoro Timer
Focus in 25-minute sessions with timed short and long breaks.
Everyday Utilities
View all 11 →Unit Converter
Convert length, weight, temperature, area, volume, speed and data units.
Speed, Distance & Time Calculator
Find speed, distance or travel time, plus running pace.
GPA & CGPA Calculator
Calculate GPA or CGPA from grades and credits, and convert to percentage.
Random Number Generator
Pick random numbers in a range, roll dice or toss a coin.
List Randomizer & Team Picker
Shuffle a list, pick random winners or split names into teams.
Typing Speed Test
Measure your typing speed in words per minute and your accuracy.
What Is My IP Address
See your public IP address, approximate location and internet provider.
Browser & User Agent Checker
See your browser, version, operating system and user agent string.
Screen Resolution Checker
See your screen resolution, viewport size and pixel ratio, live.
Email Address Validator
Check email addresses for format errors, typos and disposable domains.
MAC Address Generator
Generate random MAC addresses for testing and virtual machines.
About MaltiCalculator
MaltiCalculator brings 135 useful online tools together on one simple website. You can work out a loan EMI, check your BMI, count the words in an essay, compress a photo, format JSON or generate a strong password without installing anything or creating an account.
Each tool page explains what the tool does, how to use it step by step, and the formula or method behind the result. We believe a calculator is more useful when you can see how the answer was reached, so you can trust it and learn from it.
Why use these tools?
- Free to use: every tool is free, with no account and no usage limit.
- Private by design: calculations, text and images are processed on your own device. Only the IP Lookup tool contacts an outside service, and it says so on its page.
- Works everywhere: the site works on phones, tablets and computers, in light or dark mode.
- Clear explanations: formulas, examples and answers to common questions are on every tool page.
Frequently asked questions
Do I need to install anything?
No. Every tool runs in a modern web browser such as Chrome, Edge, Firefox or Safari.
Are the results accurate?
The tools use standard formulas and are tested, but results from finance and health calculators are estimates. For important decisions, please confirm with a qualified professional. See our disclaimer.
Can I suggest a new tool or report a problem?
Yes, please write to us from the contact page. We read every message.