All Tools

Every tool runs instantly in your browser. No signup, no upload, no limits.

Explore All Free Online Tools

• Percentage Calculator
  Free online percentage calculator. Calculate what is X% of Y, percentage increase, percentage decrease, and percentage change between two numbers.
• Loan Calculator
  Free loan repayment calculator. Calculate monthly loan payments, total interest, and full amortization for any personal or auto loan.
• Tip Calculator
  Free tip calculator. Calculate the tip amount and split the bill between any number of people instantly.
• Simple Interest Calculator
  Free simple interest calculator. Calculate interest using the formula I = P × R × T for loans, savings, and investments.
• Compound Interest Calculator
  Free compound interest calculator. Calculate compound interest with daily, monthly, quarterly, or annual compounding frequencies.
• Mortgage Calculator
  Free mortgage calculator. Calculate your monthly mortgage payment including principal, interest, down payment, and loan term.
• Discount Calculator
  Free discount calculator. Calculate the final price after a percentage discount and see how much you save instantly.
• VAT Calculator
  Free VAT calculator. Add or remove VAT from any amount with country-specific rates for UK, EU, and more.
• BMI Calculator
  Free BMI calculator. Calculate your Body Mass Index in metric or imperial units and see which weight category you fall into.
• Calories Calculator
  Free calorie calculator. Calculate your daily calorie needs for losing, maintaining, or gaining weight based on your activity level.
• Body Fat Calculator
  Free body fat calculator. Estimate your body fat percentage using the US Navy method with circumference measurements.
• Water Intake Calculator
  Free water intake calculator. Find out how much water you should drink daily based on your weight and activity level.
• Sleep Calculator
  Free sleep cycle calculator. Find the best bedtime or wake-up time based on 90-minute sleep cycles for restful sleep.
• BMR Calculator
  Free BMR calculator. Calculate your Basal Metabolic Rate and TDEE to understand your daily energy expenditure.
• Age Calculator
  Free online age calculator. Calculate your exact age in years, months, days, and total days from your date of birth.
• GPA Calculator
  Free GPA calculator. Calculate your Grade Point Average from courses, credits, and letter grades on a 4.0 scale.
• Word Counter
  Free online word counter. Count words, characters, sentences, paragraphs, and reading time in your text instantly.
• Case Converter
  Free case converter. Convert text to uppercase, lowercase, Title Case, Sentence case, camelCase, snake_case, and more.
• Password Generator
  Free strong password generator. Generate random, secure passwords with custom length and character sets online.
• Text Reverser
  Free text reverser. Reverse text by character or by word instantly. Copy the reversed result with one click.
• Markdown Editor
  Free markdown editor with live preview. Write markdown and see the formatted result side by side in real time.
• Coin Flip
  Free coin flip simulator. Flip a virtual coin for heads or tails with animation and track your flip history.
• Random Number Generator
  Free random number generator. Generate random numbers within a range with optional unique-only mode.
• Dice Roller
  Free online dice roller. Roll 1 to 12 dice with any number of sides (d6, d20, d100) and get instant results.
• JSON Formatter
  Free JSON formatter and validator. Beautify, minify, and validate JSON with syntax highlighting and error reporting.
• UUID Generator
  Free UUID generator. Generate RFC4122 version 4 UUIDs (GUIDs) instantly. Generate up to 100 at once.
• Color Picker
  Free color picker. Pick a color and get its HEX, RGB, HSL, and CMYK values. Convert between color formats.
• Base64 Encoder / Decoder
  Free Base64 encoder and decoder. Encode text to Base64 or decode Base64 back to text with UTF-8 support.
• Timestamp Converter
  Free Unix timestamp converter. Convert between Unix timestamps and human-readable dates in UTC, local, and ISO 8601.
• QR Code Generator
  Free QR code generator. Create custom QR codes for URLs, text, or contact info. Download as PNG instantly.
• Meta Tag Generator
  Free meta tag generator. Create SEO meta tags, Open Graph tags, and Twitter Card tags for your website.
• Sales Tax Calculator
  Free sales tax calculator. Calculate sales tax for any US state or country with preset rates or a custom rate.
• Net Worth Calculator
  Free net worth calculator. Calculate your net worth by subtracting total liabilities from total assets.
• Investment Calculator
  Free investment calculator. Project your investment growth with regular contributions and compound interest.
• Salary Converter
  Free salary converter. Convert hourly, daily, weekly, bi-weekly, monthly, and annual salary amounts.
• Heart Rate Calculator
  Free heart rate calculator. Find your maximum heart rate and training zones using the Karvonen method.
• Pregnancy Calculator
  Free pregnancy due date calculator. Estimate your due date and track your pregnancy week by week.
• Pace Calculator
  Free running pace calculator. Calculate your pace per km or mile from distance and time.
• Fuel Cost Calculator
  Free fuel cost calculator. Estimate fuel expenses for any trip with US or metric units.
• Grade Calculator
  Free grade calculator. Calculate your class grade from assignment scores and total points with letter grade.
• Unit Converter
  Free unit converter. Convert length, weight, temperature, volume, area, and speed between any units.
• Time Converter
  Free time unit converter. Convert between milliseconds, seconds, minutes, hours, days, and weeks.
• Text Diff Checker
  Free text diff checker. Compare two text blocks line by line and highlight added and removed lines.
• URL Encoder / Decoder
  Free URL encoder and decoder. Encode or decode URL-safe strings with percent-encoding support.
• Regex Tester
  Free regex tester. Test regular expressions against text with live match highlighting and flag support.
• Hash Generator
  Free hash generator. Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes from any text input.
• Lorem Ipsum Generator
  Free lorem ipsum generator. Generate placeholder text in paragraphs, sentences, or words for your designs.
• Roman Numeral Converter
  Free Roman numeral converter. Convert numbers to Roman numerals and vice versa (1-3999).