All Tools
Browse every tool
169 free, privacy-first tools across 10 categories. Jump to a category below or scroll through the full list.
Calculators
Precise calculations for everyday needs
Percentage Calculator
Calculate percentages, increases, and decreases
Age Calculator
Exact age in years, months, and days
BMI Calculator
Body Mass Index with metric and imperial modes
Loan Calculator
Monthly payments, interest, and totals
Date Difference
Days, weeks, and months between dates
Unit Converter
Length, weight, volume, and temperature
CGPA Calculator
Weighted GPA and CGPA for multiple country grading systems
Attendance Calculator
See your attendance percentage, safe leaves, and recovery classes
Period Calculator
Estimate upcoming periods, ovulation, and fertile dates
In-Hand Salary Calculator
Estimate take-home pay after tax and monthly deductions
Expense Tracker
Track spending, monitor a budget, and export PDF reports
Countdown Timer
Run a local countdown with start, stop, resume, reset, and session history
VAT Calculator
Add or remove VAT using custom rates or country presets
Tip & Bill Splitter
Calculate tip and split any bill with per-person breakdown and rounding modes
Compound Interest Calculator
See savings grow with interest, contributions, and a year-by-year chart
Electricity Bill Estimator
Add appliances and estimate your monthly electricity cost instantly
Fuel Cost Calculator
Calculate trip fuel cost with mileage, price, return journey, and per-person split
Body Fat Calculator
US Navy method body fat estimate with BMI and category scale
Scientific Calculator
Full trig, log, factorial, and power calculations — browser-only
Discount Calculator
Original price and discount percentage to final price and savings
Investment ROI Calculator
Return on investment with profit and loss breakdown
Inflation Calculator
Purchasing power of money across years using inflation rate
Calorie & TDEE Calculator
Daily calorie needs based on age, weight, height, and activity level
Ideal Weight Calculator
Multiple formula methods — BMI, Devine, Robinson, and Miller
Water Intake Calculator
Daily water needs based on weight and activity level
Running Pace Calculator
Speed, distance, and time converter for runners and athletes
Grade Calculator
Weighted grades to final score and letter grade
Time Calculator
Add or subtract time durations in hours, minutes, and seconds
Savings Goal Calculator
How long to reach a savings target at a given monthly contribution and rate
Break-Even Calculator
Fixed cost, variable cost, and price to break-even units and revenue
Image Tools
Convert, resize, and compress images in your browser
JPG to PNG
Convert JPG images to PNG format
PNG to JPG
Convert PNG images to JPG format
Image Resizer
Resize by pixels or percentage
Image Compressor
Reduce file size while preserving quality
Image Cropper
Crop a chosen region and export the result
Image Metadata Remover
Strip common EXIF and location metadata
Image Rotator and Flip
Rotate left or right and flip images fast
Image Format Converter
Convert to PNG, JPG, or WebP with selectable output
Color Picker from Image
Click any part of an image to get HEX and RGB
Image Merger
Combine two images side by side, up and down, or as an overlay
Image Preview and Info
Preview dimensions, size, and aspect ratio
Transparent Background Remover
Remove a simple background color and export PNG
Image to Data URL
Convert an uploaded image into a Base64 data URL
Screenshot-like Tool
Draw quick screenshot-style mockups on canvas
Pixelate Image
Apply a pixelation effect for censoring or style
Image Adjustments
Tune brightness, contrast, and a simple sharpness boost
Image to PDF Converter
Combine one or more images into a single PDF document
Add Watermark to Image
Overlay custom text watermarks onto an image
SVG to PNG Converter
Rasterize SVG markup or files into PNG at any scale
Circle Crop / Profile Pic
Crop an image into a perfect circle for avatars
Meme Generator
Add classic top and bottom captions to any image
More Image Tools
Browse the full image collection at image.mondaytool.com
Document Tools
Convert, create, and compress document files locally
Invoice Generator
Create customizable invoices with logo, currency, line items, totals, and extra text
PDF and Word Converter
Convert PDF to Word or Word to PDF with local downloads
PDF and Word Compressor
Compress PDF and DOCX files with safe or strong compression modes
Resume Builder
Build a clean printable resume in your browser with live preview and accent colors
Checklist Maker
Create multi-section checklists with progress tracking and print to PDF
Business Card Generator
Design a canvas-rendered business card and download as PNG
Cover Letter Generator
Fill-in template to a downloadable PDF cover letter in minutes
Meeting Agenda Builder
Add agenda items and time slots then export a printable agenda PDF
Budget Planner
Monthly income vs expenses with category breakdown and balance summary
Text Tools
Utilities for text, color, security, and quick creation
Word Counter
Words, characters, sentences, and paragraphs
Text Case Converter
Upper, lower, title, and sentence case
QR Code Generator
Generate QR codes from text or URLs
Password Generator
Secure passwords with local crypto generation
Color Converter
Convert between HEX, RGB, and HSL
Color Palette Generator
Build coordinated palettes from one base color
FLAMES Calculator
Classic name matching with full elimination steps
Text Encryptor
AES-256 encrypt and decrypt text with a password — nothing leaves your browser
Slug & Case Generator
Convert text into URL slug, camelCase, snake_case, PascalCase, and more
Unicode Inspector
Inspect every character — code points, UTF-8 bytes, HTML entities, and block name
Lorem Ipsum Generator
Generate classic, hipster, corporate, or tech placeholder text
Text Cleaner
Remove extra spaces, blank lines, special characters, and formatting noise
Reverse & Mirror Text
Flip text backwards or upside-down instantly
Line Sorter
Sort lines alphabetically, in reverse, randomly, or by length
Duplicate Line Remover
Strip repeated lines from any text block instantly
Word Frequency Counter
See which words appear most often in a block of text
Find & Replace Tool
Regex-powered find and replace in pasted text with live preview
Morse Code Converter
Convert text to Morse code and decode Morse back to text
Binary / Hex / Decimal Converter
Convert numbers across binary, hexadecimal, and decimal bases
Text Repeater
Repeat any word or phrase N times with a custom separator
Password Strength Checker
Score and detailed feedback on any password — no network calls
Fancy Text Generator
Turn text into bold, italic, script, and other Unicode styles
Random Number Generator
Generate random numbers in any range, with options for uniqueness
Dice Roller & Coin Flip
Roll dice of any sides and flip coins instantly
Random Picker
Paste a list and pick a random winner from it
Roman Numeral Converter
Convert between Roman numerals and numbers
Number to Words
Convert numbers into written English words
NATO Phonetic Converter
Spell text with the NATO phonetic alphabet
Developer Tools
Formatter, preview, encoding, and comparison utilities
Domain Authority Checker
Check Moz authority, page authority, spam score, and backlink metrics
SEO Audit Tool
Audit a website URL for technical SEO, metadata, headings, links, and report exports
Readability Score
Flesch-Kincaid and Coleman-Liau analysis
JSON Formatter
Validate, beautify, and minify JSON
CSS and JS Minifier
Remove comments and compress common snippets
Markdown Previewer
Preview markdown and copy generated HTML
Text Diff Checker
Compare two text versions line by line
Base64 Encoder Decoder
Convert text to and from Base64
Test Card Number Generator
Create selectable card-type test records for QA and demos
Robots.txt Generator
Create a clean robots.txt file with crawler rules and sitemap support
Sitemap Generator
Build a valid XML sitemap from your page URLs in seconds
JWT Decoder
Decode JSON Web Tokens, inspect claims, and check expiry — fully in your browser
Regex Tester
Test regular expressions live with match highlighting and capture group details
Cron Expression Parser
Parse cron expressions into plain English and see the next 10 execution times
Color Contrast Checker
Check WCAG AA/AAA contrast ratios for text and background colors
Hash Generator
Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes instantly in your browser
JSON to CSV Converter
Flatten JSON arrays into a downloadable CSV file
CSV to JSON Converter
Parse CSV input into formatted and downloadable JSON
YAML Formatter
Validate, beautify, and convert YAML to JSON instantly
Timestamp Converter
Convert Unix timestamps to human-readable dates and back
CSS Unit Converter
Convert between px, rem, and em with a configurable base font size
Aspect Ratio Calculator
Given one dimension, calculate the other for any ratio
Favicon Generator
Convert any text or emoji into a downloadable favicon.ico
Open Graph Preview
Preview how a URL's OG tags appear on social media shares
User Agent Parser
Break down any browser user-agent string into readable parts
Color Blindness Simulator
Preview colors as seen with different types of color blindness
Base32 Encoder / Decoder
Encode plain text to Base32 or decode Base32 strings back
SQL Formatter
Beautify and format SQL queries
HTML Formatter / Minifier
Beautify or minify HTML code
XML Formatter / Minifier
Format or minify XML documents
.gitignore Generator
Generate a .gitignore for your tech stack
UUID Generator
Generate 1 to 100 UUIDs in multiple formats
JSON Schema Validator
Validate JSON data against a JSON Schema
Dockerfile Generator
Generate a Dockerfile for common languages and frameworks
.env File Parser
Parse and inspect .env file contents
HTTP Mock Builder
Build HTTP mock responses for Express, MSW, or JSON Server
File to Base64 Encoder
Upload any file and get its Base64 string or data URL instantly
Base64 to File Decoder
Paste a Base64 string or data URL and download the decoded file
CSS Gradient Generator
Build linear and radial gradients and copy the CSS
CSS Box Shadow Generator
Visually design box shadows and copy the CSS
CSS Border Radius Generator
Design rounded corners and copy the border-radius CSS
Markdown Table Generator
Build a table visually and export clean Markdown
HTML Entity Encoder / Decoder
Encode text to HTML entities or decode them back
JSONPath Query Tester
Run JSONPath expressions against JSON and see matches
Network & API
URL, DNS, IP, and API reference utilities
URL Encoder / Decoder
Encode and decode URL components
URL Parser
Break a URL into scheme, host, path, and params
HTTP Status Codes
Searchable HTTP status code reference
HTTP Headers Reference
Common HTTP request and response headers explained
DNS Lookup
Query A, CNAME, MX, TXT, and NS records
IP Address Info
Country, ISP, and timezone for any IP address
MIME Type Reference
File extension to MIME type lookup
Port Number Reference
Well-known ports and their services
Security
Tokens, hashing, certificate decoding, and secret scanning
TOTP / OTP Generator
Generate time-based one-time passwords
Random Token Generator
UUID, API key, CSRF token, and hex strings in bulk
SSL Certificate Decoder
Decode a PEM certificate to inspect issuer, expiry, and SANs
Password Hash Generator
Hash and verify passwords using PBKDF2-SHA256
Entropy Calculator
Measure Shannon entropy and randomness of any string
Secret Pattern Detector
Scan code or text for accidentally exposed secrets
Finance
Mortgages, currency, tax, and money planning tools
Currency Converter
Convert between 150+ currencies using live exchange rates
Mortgage Calculator
Monthly payment with down payment, taxes, insurance, and amortization
Income Tax Calculator
Estimate US federal income tax and take-home pay by filing status
Sales Tax Calculator
Add or remove US sales tax with state presets or a custom rate
Credit Card Payoff Calculator
See how long to clear a balance and total interest paid
Retirement / 401(k) Calculator
Project retirement savings with contributions and growth
APR & APY Calculator
Convert between nominal APR and effective APY for any compounding
Net Worth Calculator
Add assets and liabilities to find your total net worth
Salary ↔ Hourly Converter
Convert annual salary to hourly, weekly, and monthly pay
Rent vs Buy Calculator
Compare the cost of renting against buying a home over time
Date & Time
Time zones, working days, countdowns, and timers
Time Zone Converter
Convert a time across multiple time zones for meetings
Business Days Calculator
Count working days between dates, excluding weekends
ISO Week Number Calculator
Find the ISO-8601 week number for any date
Event Countdown
Live countdown to any future date and time
Sleep Calculator
Find the best bedtimes or wake times using sleep cycles
Stopwatch
Precise stopwatch with lap times and reset
Pomodoro Timer
Focus timer with work and break intervals
Health & Fitness
Pregnancy, nutrition, training, and wellness calculators
Pregnancy Due Date Calculator
Estimate due date from last period or conception date
Macro Calculator
Daily protein, carb, and fat targets based on your goals
One Rep Max Calculator
Estimate your 1RM and a full percentage lifting table
Blood Alcohol (BAC) Calculator
Estimate blood alcohol content from drinks and body weight
Heart Rate Zone Calculator
Find your training heart-rate zones from age
Smoking Cost Calculator
See how much smoking costs per day, month, and year