Free Online Tools for Everyone
Calculators, PDF tools, image editors, and developer utilities — all free, all instant, no account needed.
Most Popular
Featured Tools
EMI Calculator
Use Free →
HOTGST Calculator
Use Free →
NEWIncome Tax Calculator
Use Free →
NEWSalary Calculator
Use Free →
NEWScientific Calculator
Use Free →
HOTSIP Calculator
Use Free →
HOTExcel to PDF Converter
Use Free →
NEWMerge PDF
Use Free →
HOTPDF to Excel Converter
Use Free →
NEWPDF to JPG
Use Free →
NEWSplit PDF
Use Free →
HOTWord to PDF Converter
Use Free →
NEWFavicon Generator
Use Free →
HOTImage Converter
Use Free →
HOTPNG to WebP Converter
Use Free →
HOTWebP to PNG Converter
Use Free →
NEWColor Palette Generator
Use Free →
NEWColor Picker
Use Free →
NEWCSS Gradient Generator
Use Free →
HOTCSS Minifier
Use Free →
HOTHTML Table Generator
Use Free →
NEWJavaScript Minifier
Use Free →
HOTJSON Formatter
Use Free →
NEWJWT Decoder
Use Free →
HOTMD5 Hash Generator
Use Free →
NEWBarcode Generator
Use Free →
NEWCase Converter
Use Free →
NEWEmoji Copy Paste
Use Free →
NEWPassword Generator
Use Free →
HOTWord Counter
Use Free →
New Tools Available!
We keep adding new tools every month. Check out what's new.
Calculators
51 tools available
Age Calculator
Find your exact age and days until your next birthday.
Area Converter
Convert between metric, imperial, and Indian area units.
Average Calculator
Calculate mean, median, mode, weighted & moving average.
BMI Calculator
Calculate BMI in metric or imperial units.
BMR Calculator
Find how many calories your body burns at rest.
Body Fat Calculator
Calculate body fat % using the US Navy formula.
CAGR Calculator
Calculate CAGR or future value with year-by-year breakdown.
Calorie Calculator
Find your daily calorie needs and macro split.
CGPA to Percentage Calculator
Convert CGPA to percentage with university formulas.
Compound Interest Calculator
Calculate CI with the A = P(1 + r/n)^nt formula.
Data Storage Converter
Convert GB, MB, TB with binary and decimal modes.
Date Difference Calculator
Find days, weeks, and months between two dates.
Discount Calculator
Find sale price and discount % instantly.
EMI Calculator
Calculate loan EMI with full amortization schedule.
FD Calculator
Calculate FD maturity amount and interest instantly.
Fraction Calculator
Perform fraction arithmetic with step-by-step solution.
Fuel Cost Calculator
Calculate trip fuel cost for petrol, diesel, or CNG.
GPA Calculator
Calculate CGPA from course credits and letter grades.
Gratuity Calculator
Calculate gratuity amount and tax exemption instantly.
GST Calculator
Add or remove GST from any price instantly.
HRA Calculator
Calculate HRA tax exemption instantly.
Ideal Weight Calculator
Find your ideal weight range using 4 medical formulas.
Income Tax Calculator
Calculate income tax under new & old regime 2025-26.
Inflation Calculator
Find how inflation erodes purchasing power over time.
Length Converter
Convert between metric and imperial length units.
Lumpsum Calculator
Calculate one-time investment maturity amount and returns.
Marks Percentage Calculator
Calculate percentage from marks with grade and pass/fail.
NPS Calculator
Calculate NPS pension corpus.
Number System Converter
Convert binary, octal, decimal, hex instantly.
Number to Words Converter
Convert numbers to Indian words — Rupees and Paise.
Ovulation Calculator
Find your ovulation date and fertile window instantly.
Percentage Calculator
Calculate percentages and percentage change instantly.
Percentage to CGPA Calculator
Convert percentage to CGPA with reverse formulas.
PPF Calculator
Calculate PPF maturity amount and interest.
Pregnancy Due Date Calculator
Estimate your pregnancy due date easily.
Ratio Calculator
Simplify, scale ratios and solve proportions instantly.
RD Calculator
Calculate RD maturity amount and interest instantly.
Salary Calculator
Calculate take-home salary from CTC instantly.
Scientific Calculator
Online scientific calculator with trig, log, history.
SCSS Calculator
Calculate SCSS quarterly interest and maturity amount.
Simple Interest Calculator
Calculate SI using the P × R × T / 100 formula.
SIP Calculator
Plan your mutual fund SIP investments easily.
Speed Converter
Convert m/s, km/h, mph, knots, ft/s in real time.
Sukanya Samriddhi Yojana Calculator
Calculate SSY maturity amount for girl child savings.
TDEE Calculator
Calculate TDEE and daily calorie goal with macros.
TDS Calculator
Calculate Tax Deducted at Source.
Temperature Converter
Convert °C, °F, and K instantly.
Time Zone Converter
Convert times across IST, UTC, EST, PST, GMT, JST and more.
Tip Calculator
Calculate tip and split the bill per person instantly.
Water Intake Calculator
Find how much water you should drink daily.
Weight Converter
Convert between metric and imperial weight units.
PDF Tools
13 tools available
Excel to PDF Converter
Convert XLSX to PDF instantly in your browser.
JPG to PDF Converter
Convert images to PDF in one click.
Merge PDF
Combine multiple PDFs into one file instantly.
PDF Page Remover
Delete pages from PDF by number or range.
PDF Password Protector
Password protect and encrypt PDF online free.
PDF Password Remover
Unlock password-protected PDFs instantly in browser.
PDF to Excel Converter
Convert PDF to XLSX instantly in your browser.
PDF to JPG
Convert PDF pages to JPG images with quality control.
PDF to JPG Converter
Convert PDF to JPG instantly in your browser.
PDF to Word Converter
Convert PDF to DOCX instantly in your browser.
Rotate PDF
Rotate PDF pages by 90°, 180°, or 270°.
Split PDF
Split PDF by pages, ranges, or extract pages.
Word to PDF Converter
Convert DOCX to PDF instantly in your browser.
Image Tools
12 tools available
Favicon Generator
Generate all favicon sizes from any image instantly.
Image Color Picker
Pick colors from any image and get HEX, RGB, HSL values.
Image Converter
Convert images between various formats.
Image Cropper
Crop images to any size or aspect ratio instantly.
Image Resizer Online
Resize images in seconds.
JPG to PNG Converter
Convert JPG to PNG instantly in your browser.
JPG to WebP Converter
Convert JPG to WebP for smaller web-ready images.
Meme Generator
Add text to any image and create memes instantly.
PNG to JPG Converter
Convert PNG to JPG and reduce file size instantly.
PNG to WebP Converter
Convert PNG to WebP instantly in your browser.
WebP to JPG Converter
Convert WebP to JPG for maximum compatibility.
WebP to PNG Converter
Convert WebP to PNG instantly in your browser.
Developer Tools
23 tools available
Base64 Encoder / Decoder
Encode and decode Base64 instantly.
Border Radius Generator
Generate CSS border-radius visually with live preview.
Box Shadow Generator
Generate CSS box shadows visually with live preview.
Color Palette Generator
Create harmonious color palettes from any color.
Color Picker
Pick colors and get HEX, RGB, HSL, CMYK instantly.
CSS Formatter / Beautifier
Format and beautify CSS code instantly.
CSS Gradient Generator
Generate linear, radial, and conic CSS gradients visually.
CSS Minifier
Minify CSS code instantly in browser.
HEX to RGBA Converter
Convert HEX colors to RGB/RGBA instantly.
HTML Minifier
Minify HTML to reduce page size instantly.
HTML Table Generator
Create HTML tables in seconds.
HTML Viewer
Preview HTML code in real-time.
JavaScript Minifier
Minify or beautify JavaScript code instantly.
JSON Formatter
Format, validate, and minify JSON instantly.
JWT Decoder
Decode JWT tokens and inspect claims instantly.
Markdown Editor
Live Markdown editor with HTML preview and toolbar.
MD5 Hash Generator
Generate MD5, SHA-1, SHA-256 hashes instantly.
Meta Tag Generator
Generate SEO meta tags and Open Graph tags instantly.
PX to REM Converter
Convert PX to REM instantly.
Regex Tester
Test regular expressions with live highlighting.
REM to PX Converter
Convert REM to PX instantly.
SHA256 Hash Generator
Generate MD5, SHA1, SHA256, SHA512 hashes instantly.
URL Encoder / Decoder
Encode, decode, and parse URLs instantly.
Text Tools
18 tools available
Barcode Generator
Create CODE128, EAN, UPC barcodes and download SVG/PNG.
Binary to Text
Decode binary code to readable text instantly.
Case Converter
Convert text to any case format instantly.
Character Counter
Count characters and check social media limits instantly.
CSV to JSON Converter
Convert CSV to JSON with auto-detection and type inference.
Duplicate Line Remover
Remove duplicate lines with case and sort options.
Emoji Copy Paste
Click any emoji to copy it to clipboard instantly.
JSON to CSV Converter
Convert JSON arrays to CSV with nested object support.
Lorem Ipsum Generator
Generate dummy placeholder text instantly.
Password Generator
Generate strong random passwords instantly.
Reading Time Calculator
Estimate how long any article takes to read.
Roman Numeral Converter
Convert numbers to Roman numerals and back instantly.
Sentence Counter
Count sentences with avg words, longest & reading time.
Text Reverser
Reverse characters, words, lines or flip upside down.
Text Sorter
Sort text lines in 6 ways with deduplication options.
Text to Binary
Convert text to 8-bit binary with character map.
Text to Slug
Generate SEO-friendly URL slugs from any text.
Word Counter
Count words and characters instantly.
Why Choose Us
Why millions use Calcon
Built for speed, simplicity, and trust
Instant Results
All tools work in real-time. No waiting, no loading screens.
100% Private
Files processed in your browser. Nothing uploaded to any server.
Works Everywhere
Phone, tablet, laptop — Calcon works perfectly on every device.
Always Free
Every tool is free forever. No hidden charges or paywalls.
Trending
🔥 Most Used Tools
Need a powerful hosting plan?
Get blazing fast web hosting trusted by thousands of businesses. Special offer available for Calcon users.
Get Best Hosting →