Donaldson R F All free pages, A to Z
770 pages: 628 tools and 142 unit and currency converters.
0-9
A
- Academic Deadline Backplanner
- Acres To Hectares
- Add Page Numbers to PDF
- Add Watermark to PDF
- Age Calculator
- Age Difference Calculator
- Age on Other Planets
- Air Changes Per Hour (ACH) Calculator
- Alcohol Units Calculator
- Amortization Schedule Calculator
- Anagram Generator
- Angle Converter (DMS, Decimal, Gradians, Radians)
- APR Calculator
- Armstrong Number Checker
- ASCII Art Text Generator
- Aspect Ratio Calculator
- Asteroid Diameter from Magnitude Calculator
- Astronomical Distance Converter
- Atm To Pascal
- Attendance Percentage Calculator
- Aud To Usd
- Audio Converter
- Audio Fade In & Fade Out
B
- Banner Generator
- Bar To Psi
- Barcode & QR Code Reader
- Barcode Check Digit Calculator
- Barcode Generator
- Base64 Encode / Decode
- Batch Barcode Generator
- Battery Capacity & Runtime Calculator
- BBQ Calculator
- Bearing ⇄ Azimuth Converter
- Bill of Sale Generator
- Bill Splitter
- BIMI Record Helper
- Binary To Decimal
- Binary To Hex
- Binary To Octal
- Bingo Card Generator
- Black & White Photo Filter
- Blur & Pixelate Image Tool
- BMI Calculator
- BMR Calculator
- Body Fat Calculator
- Bold Word Starts Converter
- Bowling Score Calculator
- Braille Converter
- Braking & Stopping Distance Calculator
- Break-Even Calculator
- Breathing Circle
- Brick Calculator
- Brl To Usd
- Broken Link Checker
- Budgerigar Age Calculator
- Bulk File Renamer
- Bulk PDF Downloader from a List of Links
- Business Card Generator
- Business Days Calculator
- Business Hours Difference Calculator
- Business Name Generator
C
- Cad To Usd
- CAGR Calculator
- Cake Tin Converter
- Calendar Generator
- Calories Burned Calculator
- Calories To Joules
- Canonical Tag Checker
- Car Depreciation Calculator
- Car Loan Calculator
- Carpet Calculator
- Case Converter
- Cat Age Calculator
- Celsius To Fahrenheit
- Celsius To Kelvin
- Certificate Generator
- CGPA to Percentage Converter
- Change Audio Speed
- Change Audio Volume
- Checklist Maker
- Checksum & CRC Calculator
- Chemical Equation Balancer
- Child Benefit & High Income Tax Charge Calculator
- Child Growth Percentile Calculator
- chmod Calculator
- Churn Rate Calculator
- Circumference Calculator
- Citation Generator
- Citation Style Converter
- Clean Email List
- Click Speed Test (CPS)
- Clothing Size Converter
- Cm To Inches
- Cockatiel Age Calculator
- Code Breaker
- Coffee Ratio Calculator
- Coin Flip
- Color Blindness Simulator
- Color Contrast Checker
- Color Palette Generator
- Color Picker & Converter
- Colour Sequence Memory
- Common Ports Lookup
- Compare PDF
- Compare Two Email Lists
- Compost C:N Ratio Calculator
- Compound Interest Calculator
- Compress PDF
- Compress Video
- Concrete & Mortar Mix Calculator
- Confidence Interval Calculator
- Connect Four
- Cooking Measurement Converter
- Coordinate Geometry (COGO) Calculator
- Coordinates Converter
- Cornell Notes Generator
- Correlation & Linear Regression Calculator
- Cost in Work Hours Calculator
- Count Emails by Domain
- Countdown Timer
- Country Capital, Currency & Domain Lookup
- Country Phone Codes
- Cover Letter Generator
- Credit Card Number Validator
- Credit Card Test Number Generator
- Cron Expression Generator
- Cron Schedule Simulator
- Crop PDF
- CSS Animation Generator
- CSS Border Radius Generator
- CSS Box Shadow Generator
- CSS Clip-Path Generator
- CSS Flexbox Generator
- CSS Gradient Generator
- CSS Grid Generator
- CSS Minifier
- CSS Text Shadow Generator
- CSV Column Extractor
- CSV Merger
- CSV Sorter & Deduplicator
- CSV to Excel
- CSV to JSON
- Cups To Grams
- Cups To Ml
- Cups To Ounces
- Cups To Tablespoons
- Currency Converter
- Current Season Finder
- Customer Acquisition Cost (CAC) Calculator
- Customer Lifetime Value (LTV) Calculator
- Cut and Fill Volume Calculator
D
- Date Calculator
- Date Difference Calculator
- Date Format Converter
- Day of the Year
- Days Until Calculator
- Debt Payoff Calculator
- Decimal To Binary
- Decimal to Fraction Converter
- Decimal To Hex
- Decimal To Octal
- Degrees To Radians
- Depreciation Calculator
- Dice Roller
- Dilution Calculator (C1V1=C2V2)
- Dimensional Weight Calculator
- Discount Calculator
- Disposable Email Detector
- Distance Between Cities
- DKIM Record Checker
- DMARC Record Generator
- DNS Lookup
- Dog Age Calculator
- Domain Age Checker
- Domain Name Idea Generator
- Dots and Boxes
- Download Time Calculator
- Duplicate Word Finder
E
- Easy Grader
- Electricity Cost & Bill Calculator
- Element Combiner
- Email Address Obfuscator
- Email Header Analyzer
- Email List Converter
- Email Parts Splitter
- Email Provider by MX
- Email Provider Detector
- Email Signature Generator
- Email Structure Analyzer
- Email Subject Line Checker
- Email Syntax Validator
- Email Typo Fixer
- Emergency Fund Calculator
- Empirical & Molecular Formula Calculator
- Essay Outline Builder
- Euclid's Theorem Calculator
- Eur To Brl
- Eur To Chf
- Eur To Gbp
- Eur To Jpy
- Eur To Pln
- Eur To Sek
- Eur To Usd
- EV Charging Cost & Time Calculator
- EV vs Petrol Break-Even Calculator
- Event Countdown
- Excel Merger
- Excel to CSV
- Excel to PDF
- EXIF Viewer
- Exoplanet Equilibrium Temperature Calculator
- Exponent Calculator
- Extract Audio from Video
- Extract Domains from URLs
- Extract Emails from a CSV Column
- Extract Emails from Text
- Extract Frames from Video
- Extract Gmail, Outlook, Yahoo Emails
- Extract Images from PDF
F
- Factorial Calculator
- Fahrenheit To Celsius
- Fahrenheit To Kelvin
- Fancy Text Generator
- FAQ Schema Markup Generator
- Favicon Generator
- Feet To Inches
- Feet To Meters
- Fence & Deck Calculator
- Fertiliser NPK Calculator
- Fibonacci Sequence Generator
- File Hash Calculator
- Filter Emails by Domain or TLD
- Final Grade Calculator
- Financing Simulator
- Find and Replace
- Flashcard Maker
- Flight Duration Calculator
- Floz To Ml
- Focal Length & Crop Factor Calculator
- Fraction Calculator
- Freelance Hourly Rate Calculator
- Fuel Cost Calculator
- Fullscreen Color Screen
G
- .gitignore Generator
- Gallons To Liters
- Gantt Chart Maker
- Garden Irrigation Water Calculator
- Gasoline vs Ethanol Calculator
- Gb To Mb
- Gb To Tb
- Gbp To Aud
- Gbp To Brl
- Gbp To Cad
- Gbp To Chf
- Gbp To Cny
- Gbp To Dkk
- Gbp To Eur
- Gbp To Hkd
- Gbp To Idr
- Gbp To Ils
- Gbp To Inr
- Gbp To Jpy
- Gbp To Krw
- Gbp To Mxn
- Gbp To Nok
- Gbp To Nzd
- Gbp To Php
- Gbp To Pln
- Gbp To Rub
- Gbp To Sek
- Gbp To Sgd
- Gbp To Thb
- Gbp To Try
- Gbp To Usd
- Gbp To Vnd
- Gbp To Zar
- GCD & LCM Calculator
- Generator & Inverter Sizing Calculator
- Geostationary Dish Look Angle Calculator
- Glassmorphism & Neumorphism Generator
- Gold Purity & Alloy Calculator
- Golf Handicap Calculator
- Google SERP Snippet Preview
- GPA Calculator
- Grams To Cups
- Grams To Ounces
- Gravel, Mulch & Soil Calculator
- Greenhouse Heating & Ventilation Calculator
- Growing Degree Days (GDD) Calculator
- Guinea Pig Age Calculator
H
- .htaccess Redirect Generator
- Habit Tracker
- Habitable Zone Calculator
- Half-Life & Decay Calculator
- Hamster Age Calculator
- Hangman
- Hash Generator
- Hash Identifier
- Heart Rate Zone Calculator
- Hectares To Acres
- HEIC to JPG
- Hex To Binary
- Hex To Decimal
- Hex To Hsl
- Hex To Octal
- Hex To Rgb
- HEX ⇄ CMYK Converter
- Higher or Lower
- HMRC Mileage Allowance Calculator
- Hohmann Transfer Delta-v Calculator
- Horse Age Calculator
- Hours Calculator
- Hreflang Tag Generator
- Hsl To Rgb
- HTML Editor & Live Preview
- HTML Email Previewer
- HTML Entity Encoder / Decoder
- HTML Minifier
- HTML Table Generator
- HTML to Markdown
- HTML to Text
- HTTP Status Code Lookup
- HVAC / BTU Calculator
I
- .ICS Calendar Event Generator
- IBAN Validator
- Ideal Weight Calculator
- Image Colour Extractor
- Image Compressor
- Image Cropper
- Image Format Converter
- Image Resizer
- Image Splitter
- Image to Base64 Converter
- Image to Text (OCR)
- Images to GIF Maker
- Impact Energy & Crater Calculator
- Inches To Cm
- Inflation Calculator
- Insulation Heat Loss Calculator
- Internet Speed Test
- Inventory Turnover Calculator
- Invisible Character Generator
- Invoice Generator
- IP Geolocation Lookup
J
K
L
- Land Area from Coordinates
- Landed Cost Calculator
- Lbs To Kg
- Leap Year Checker
- Lease vs Buy Calculator
- Letterhead Generator
- Light Travel Time Calculator
- Lined Paper Generator
- Link Organizer
- List Compare Tool
- Liters To Gallons
- Liters To Pints
- Loan Payoff Calculator
- Log Calculator
- Long Division Calculator
- Lorem Ipsum Generator
- Luggage vs Car Boot Calculator
M
- MAC Address Lookup
- Macro Calculator
- Magic 8-Ball
- Mailto Link Generator
- Marathon Pace Calculator
- Markdown Editor with Live Preview
- Markdown to HTML
- Marketplace Fee Calculator
- Markup vs Margin Calculator
- Mars Sol Converter
- Matrix Calculator
- Mb To Gb
- Mean, Median, Mode Calculator
- Meeting Minutes Generator
- Meeting Planner Across Time Zones
- Meme Generator
- Memory Card Game
- Merge Email Lists
- Merge PDF
- Merge Videos
- Meta Tag Generator
- Meta Title & Description Length Checker
- Metal Price Ratios
- Metal Weight & Density Calculator
- Meters To Feet
- Meters To Yards
- Miles To Km
- MIME Type Lookup
- Minefield
- Ml To Cups
- Ml To Floz
- Ml To Tablespoons
- Mm To Inches
- Mock Data Generator
- Mojibake Fixer
- Molar Mass Calculator
- Molarity & Molality Calculator
- Moon Phase
- Morse Code Converter
- Mortgage Calculator
- MOT Due Date Calculator
- MP3 Cutter & Audio Trimmer
- MPG Converter
- Mph To Kmh
- Multi Timer
- Mute Video
- MX Lookup
- My Current Location
N
O
- Octal To Binary
- Octal To Decimal
- Octal To Hex
- Odd Colour Out
- Ohm's Law Calculator
- One Rep Max Calculator
- Online Drawing Pad
- Online Ruler
- Online Text Editor
- Open Graph Preview
- Orbital & Escape Velocity Calculator
- Ounces To Cups
- Ounces To Grams
- Oven Temperature Converter
- Overtime & Time and a Half Calculator
- Ovulation Calculator
P
- P-Value Calculator
- Packing List Generator
- Page Weight & Cache Calculator
- Paint Calculator
- Palindrome Checker
- Paper Size Converter
- Party Food Portion Calculator
- Passphrase Generator
- Passport & ID Photo Cropper
- Password Generator
- Password Strength Checker
- Payment Processing Fee Calculator
- PDF Booklet Maker
- PDF Info Viewer
- PDF Metadata Editor
- PDF OCR
- PDF to JPG
- PDF to PNG Converter
- PDF to Text Extractor
- PDF to Word
- Pension Annual Allowance Calculator
- Percentage Calculator
- Perfect Number Checker
- Period Calculator
- Periodic Table Lookup
- Permutation & Combination Calculator
- Pet Age Calculators
- pH & pOH Calculator
- Pints To Liters
- Pixel Art Maker
- Placeholder Image Generator
- Planet Facts Table
- Planet Weight Calculator
- Plant Spacing Calculator
- PNG to WebP
- Pomodoro Timer
- Power Converter (HP, kW, CV)
- Power Factor Calculator
- PowerPoint ⇄ PDF Converter
- PPM & PPB Converter
- Pre-Decimal Currency (£sd) Converter
- Precious Metal Melt Value Calculator
- Prefix and Suffix Adder
- Pregnancy Due Date Calculator
- Pregnancy Weight Gain Calculator
- Pressure Converter
- Prime Factorization Calculator
- Prime Number Checker
- Printable Graph Paper Generator
- Printable Protractor & Ruler
- Probability Calculator
- Product SKU Generator
- Promissory Note Generator
- Protect PDF with Password
- Psi To Bar
- Psi To Kpa
- Purchase Order Generator
- PX to REM Converter
- Pythagorean Theorem Calculator
Q
R
- Rabbit Age Calculator
- Race Time Predictor
- Radians To Degrees
- Rainwater Harvest Volume Calculator
- Random Date Generator
- Random Hex Color Generator
- Random Joke Generator
- Random Number Generator
- Random Person Generator
- Random Picker
- Random Sentence Generator
- Random Team Generator
- Random Word Generator
- Randomize List Order
- Ratio & Proportion Calculator
- Reaction Time Test
- Reading Level Checker
- Receipt Generator
- Recipe Scaler
- Redirect Checker
- Redshift & Doppler Velocity Calculator
- Regex Tester
- Remove Duplicate Emails
- Remove Duplicate Lines
- Remove Extra Spaces & Line Breaks
- Remove Line Breaks
- Remove Pages from PDF
- Remove Silence from Audio
- Rental Agreement Generator
- Reorder PDF Pages
- Resignation Letter Generator
- Resistor Color Code Calculator
- Resume / CV Builder
- Retirement Calculator
- Reverse Audio
- Reverse Text
- Rgb To Hex
- Rgb To Hsl
- Ring Size Converter
- Robots.txt Generator
- Rock Paper Scissors
- Rocket Equation Calculator
- ROI Calculator
- Role-Based Email Detector
- Roman Numeral Converter
- Roofing Calculator
- ROT13 & Caesar Cipher
- Rotate & Resize Video
- Rotate PDF
- Round Robin Generator
- Rounded Corners & Border Generator
- Ruffini's Rule Calculator
- Rule of Three Calculator
S
- Salary to Hourly Calculator
- Sales Tax Calculator
- Savings Goal Calculator
- Savings Simulator
- Scientific Calculator
- Scientific Notation Converter
- Screen PPI Calculator
- Screen Recorder
- Secret Santa Generator
- Security Headers Checker
- Separate Free vs Business Emails
- Server Region Latency Estimator
- Shift Schedule Calculator
- Shoe Size Converter
- Sidereal Time Calculator (GMST & LST)
- Sigma Notation Calculator
- Sign PDF
- Significant Figures Calculator
- Simple Contract Generator
- Simple Interest Calculator
- Simple Kanban Board
- Sine, Cosine, Tangent Calculator
- Sitemap Validator
- Sleep Cycle Calculator
- Slope / Grade Calculator
- Slope Calculator
- Slug Generator
- Small Text Generator
- Snake Game
- Solar Panel Savings Calculator
- Sort Email List
- Sort Lines Alphabetically
- Spam Word Checker
- Speed Converter
- Speed Reading Trainer
- Speed, Distance & Time Calculator
- SPF & DMARC Checker
- SPF Record Generator
- Spin the Wheel
- Split CSV
- Split Email List
- Split Excel
- Split PDF
- Sprite Sheet Generator
- Sqft To Sqm
- SQL Formatter & Minifier
- Sqm To Sqft
- Sqmi To Sqkm
- Square Footage Calculator
- Square Root Calculator
- SSL Certificate Checker
- Stacked Letters Generator
- Stair Calculator
- Stamp Duty Calculator (UK)
- Standard Deviation Calculator
- Star Luminosity, Radius & Temperature Calculator
- Statutory Redundancy Pay Calculator
- Stellar Magnitude & Distance Calculator
- Stoichiometry Calculator
- Stone To Kg
- Stopwatch
- Student Loan Repayment Calculator
- Study Schedule Generator
- Subnet / CIDR Calculator
- Subscription Tracker
- Sudoku Puzzle
- Sunrise & Sunset Calculator
- Surface Area & Volume Calculator
- SVG to PNG Converter
- Swimming Pace Calculator
- Syllable Counter
- Symbols & Emoji to Copy
- Symmetry Drawing Pad
T
- T-Score Calculator
- Tablespoons To Cups
- Tablespoons To Ml
- Tape Digitising Storage Calculator
- Tb To Gb
- TDEE Calculator
- Teaspoons To Ml
- Technology Age Calculator
- Test Score Calculator
- Text Diff Checker
- Text Emoticons to Copy
- Text Encryption (AES)
- Text Repeater
- Text to Binary Converter
- Text to HTML
- Text to Image
- Tic-Tac-Toe
- Tile & Flooring Calculator
- Time to a Million Calculator
- Time Zone Converter
- Times Table Generator
- Timesheet Generator
- Tip Calculator
- Tire Size Calculator
- TOML ⇄ JSON Converter
- Tortoise and Turtle Age Calculator
- Tournament Bracket Generator
- Tracking Parameter Remover
- Transit Depth & Duration Calculator
- Traverse Closure Calculator
- Triangle Solver
- Trim & Cut Video
- Trip Budget Calculator
- Trivia Quiz
- Troy Ounce, Pennyweight & Grain Converter
- Truth or Dare Generator
- TSV ⇄ CSV Converter
- Typing Speed Test
U
- UK Capital Gains Tax Calculator
- UK Corporation Tax Calculator
- UK Dividend Tax Calculator
- UK Holiday Entitlement Calculator
- UK National Insurance Calculator
- UK Notice Period Calculator
- UK Number Plate Age Checker
- UK Self Assessment Tax Calculator
- UK Take-Home Pay Calculator
- UK Tax Code Decoder
- UK Tax Year Dates & Self Assessment Deadlines
- UK vs US Spelling Checker
- Unit Converter
- Unit Price Comparator
- Unix Timestamp Converter
- Unlock PDF
- Unprotect Word Document
- Upside Down Text Generator
- URL Encoder / Decoder
- URL Parser
- Usd To Aud
- Usd To Brl
- Usd To Cad
- Usd To Chf
- Usd To Cny
- Usd To Dkk
- Usd To Eur
- Usd To Gbp
- Usd To Hkd
- Usd To Idr
- Usd To Ils
- Usd To Inr
- Usd To Jpy
- Usd To Krw
- Usd To Mxn
- Usd To Nok
- Usd To Nzd
- Usd To Php
- Usd To Pln
- Usd To Rub
- Usd To Sek
- Usd To Sgd
- Usd To Thb
- Usd To Try
- Usd To Vnd
- Usd To Zar
- User-Agent Parser
- Username Generator
- UTM Builder
- UUID Generator
V
W
- Waist-to-Hip Ratio Calculator
- Wallpaper Calculator
- Water Intake Calculator
- Watermark Image Tool
- Week Number Calculator
- Weekday Finder
- Weighted Grade Calculator
- What Is My IP Address
- WhatsApp Link Generator
- Whois Lookup
- Wholesale & Retail Price Calculator
- Wi-Fi QR Code Generator
- Wind Chill & Dew Point Calculator
- Word & Character Counter
- Word Cloud Generator
- Word Guess
- Word Scramble
- Word to PDF
- World Clock
- Would You Rather Generator