Free Online Tools
for Everyone

Calculate exact age in years, months, and days from a date of birth

Calculate the exact number of days, weeks, and months between any two dates

Calculate percentages, percentage increase/decrease, and find what percent one number is of another

Calculate tip amount and split the bill among multiple people

Calculate and convert aspect ratios for images, videos, and screens

Set a countdown timer for any duration or event date

25-minute focus sessions with breaks using the Pomodoro technique

A screen-calibrated ruler that shows accurate centimeters and inches

Add or remove GST from any amount — supports all Indian GST slabs (5%, 12%, 18%, 28%)

Calculate SIP returns with expected growth rate and time period

Calculate monthly EMI for home loans, car loans, and personal loans

Calculate compound interest with monthly or annual compounding

Calculate sale price and savings from any discount percentage

Convert annual salary to hourly, daily, weekly, and monthly pay

Calculate return on investment (ROI) as a percentage

Calculate compound annual growth rate (CAGR) for any investment period

Calculate PPF maturity amount and interest earned over the investment period

Calculate fixed deposit maturity amount and interest for Indian banks

Understand and calculate the difference between markup and profit margin

Calculate break-even point in units and revenue for any business

Count words, characters, sentences, and paragraphs in any text

Count characters with and without spaces — great for social media limits

Convert text between UPPERCASE, lowercase, Title Case, and sentence case

Estimate how long it takes to read any piece of text

Compare two text blocks and highlight the differences line by line

Remove duplicate lines from any list or text block instantly

Sort any list of lines alphabetically, A-Z or Z-A

Find the most frequently used words in any text

Convert any title or text into a clean, URL-friendly slug

Generate lorem ipsum placeholder text by paragraphs or words

Generate random numbers within any range, with options for uniqueness

Generate strong, secure random passwords with custom length and character sets

Generate random UUID v4 identifiers for development and testing

Generate QR codes for URLs, text, phone numbers, and more

Generate random colors with HEX, RGB, and HSL values

Generate random first and last names for testing, writing, or games

Generate relevant hashtag sets for Instagram, LinkedIn, and Twitter

Build UTM-tagged campaign URLs for Google Analytics tracking

Check and preview meta title, description, and Open Graph tags for any URL

Preview how your page will appear in Google search results

Check character limits for Google Ads and Meta Ads headlines and descriptions

Analyze keyword density and frequency in any text or web page content

Preview how your page looks when shared on Facebook, Twitter, and LinkedIn

Convert temperatures between Celsius, Fahrenheit, and Kelvin instantly

Convert lengths between centimeters, inches, feet, meters, and kilometers

Convert weight between kilograms, pounds, grams, ounces, and stone

Convert time between any two time zones across the world

Convert currencies using live exchange rates (100+ currencies)

Convert between bytes, KB, MB, GB, TB, and binary units (GiB, TiB)

Convert speed between km/h, mph, m/s, and knots

Convert font sizes between px, rem, em, and pt units

See the current time in major cities across all time zones simultaneously

Find your public IP address, location, ISP, and device information

Look up DNS records (A, MX, TXT, NS, CNAME) for any domain

Look up domain registration information, expiry date, and registrar

Check SSL certificate validity, expiry date, issuer, and chain for any domain

Check if a website is up or down from multiple locations

Trace HTTP redirects and check the full redirect chain for any URL

Check color contrast ratios for WCAG AA and AAA accessibility compliance

Format, prettify, and validate JSON — with syntax highlighting and error detection

Encode and decode strings and files to/from Base64 format

Encode and decode URL strings using percent-encoding

Convert numbers between decimal, binary, hexadecimal, and octal

Convert colors between RGB, HEX, and HSL formats with a live color picker

Visually generate CSS box-shadow code with live preview

Convert Unix timestamps to readable dates and vice versa

Build and understand cron expressions with a visual editor

Calculate Body Mass Index (BMI) with health category classification

Calculate calories burned during different activities and exercises

Calculate your Total Daily Energy Expenditure based on activity level

Calculate your ideal weight range based on height and body frame

Calculate estimated due date from last menstrual period (LMP)

Calculate body fat percentage using the US Navy method or BMI method

Calculate recommended weight gain range during pregnancy based on pre-pregnancy BMI and track weekly progress.

Predict ovulation dates and fertile window based on cycle length and last period to assist with family planning.