All free online tools
Every tool at Digital Drive HQ in one place — free, no sign-up, and (for file tools) nothing ever uploaded. Jump to a category below, or press ⌘K to search.
PDF Tools9 tools
Merge, split, compress, rotate, watermark, and convert PDFs — free, in your browser, with nothing uploaded.
- Merge PDFNew
- Split PDFNew
- Images to PDFNew
- PDF to JPGNew
- Rotate PDFNew
- Add Page Numbers to PDFNew
- Watermark PDFNew
- Extract Text from PDFNew
- Compress PDFNew
Image Tools13 tools
Compress, convert, resize, crop, and remove backgrounds from images — free and private, right in your browser.
- Image Compressor
- Image Converter
- Image Resizer
- Image to Base64
- Favicon Generator
- Rotate & Flip ImageNew
- Remove Image BackgroundNew
- Image CropperNew
- Image to Text (OCR)New
- Meme GeneratorNew
- Aspect Ratio CalculatorNew
- Image Color PickerNew
- HEIC to JPG ConverterNew
Calculators47 tools
The calculators people search for daily — BMI, loan, mortgage, percentage, tip, GPA, calorie, sleep, and more.
- BMI CalculatorNew
- Loan CalculatorNew
- Mortgage CalculatorNew
- Compound Interest CalculatorNew
- Tip CalculatorNew
- Salary CalculatorNew
- GPA CalculatorNew
- Calorie CalculatorNew
- Sleep CalculatorNew
- Pregnancy Due Date CalculatorNew
- Final Grade CalculatorNew
- Ovulation CalculatorNew
- Scientific CalculatorNew
- Average CalculatorNew
- Fraction CalculatorNew
- Ratio CalculatorNew
- Body Fat CalculatorNew
- Macro CalculatorNew
- Pace CalculatorNew
- Concrete CalculatorNew
- Square Footage CalculatorNew
- Tile CalculatorNew
- Roofing CalculatorNew
- Mulch CalculatorNew
- Gravel CalculatorNew
- Stair CalculatorNew
- BTU CalculatorNew
- Height CalculatorNew
- Density CalculatorNew
- Mass CalculatorNew
- Molarity CalculatorNew
- GDP CalculatorNew
- Fuel Cost CalculatorNew
- Gas Mileage CalculatorNew
- Mileage CalculatorNew
- Horsepower CalculatorNew
- Engine Horsepower CalculatorNew
- Tire Size CalculatorNew
- Wind Chill CalculatorNew
- Heat Index CalculatorNew
- Dew Point CalculatorNew
- Shoe Size CalculatorNew
- Bra Size CalculatorNew
- Golf Handicap CalculatorNew
- Molecular Weight CalculatorNew
- Grade CalculatorNew
- Speed CalculatorNew
Financial Calculators65 tools
Loan, mortgage, auto, investment, retirement, and debt calculators — free, accurate, and instant.
- Auto Loan CalculatorNew
- Amortization CalculatorNew
- Mortgage Payoff CalculatorNew
- House Affordability CalculatorNew
- Down Payment CalculatorNew
- Debt-to-Income Ratio CalculatorNew
- Credit Card Payoff CalculatorNew
- Debt Payoff CalculatorNew
- Interest CalculatorNew
- Simple Interest CalculatorNew
- Savings CalculatorNew
- CD CalculatorNew
- Present Value CalculatorNew
- Future Value CalculatorNew
- Investment CalculatorNew
- 401(k) CalculatorNew
- IRA CalculatorNew
- Inflation CalculatorNew
- VAT CalculatorNew
- Personal Loan CalculatorNew
- Student Loan CalculatorNew
- Business Loan CalculatorNew
- Home Equity Loan CalculatorNew
- HELOC CalculatorNew
- Repayment CalculatorNew
- Payment CalculatorNew
- Refinance CalculatorNew
- Debt Consolidation CalculatorNew
- Budget CalculatorNew
- Commission CalculatorNew
- Depreciation CalculatorNew
- Margin CalculatorNew
- Rent CalculatorNew
- Annuity Payout CalculatorNew
- Annuity CalculatorNew
- Roth IRA CalculatorNew
- Lease CalculatorNew
- Auto Lease CalculatorNew
- College Cost CalculatorNew
- Average Return CalculatorNew
- Payback Period CalculatorNew
- Rental Property CalculatorNew
- Bond CalculatorNew
- Mutual Fund CalculatorNew
- RMD CalculatorNew
- Income Tax CalculatorNew
- Take-Home Paycheck CalculatorNew
- FHA Loan CalculatorNew
- VA Mortgage CalculatorNew
- Pension CalculatorNew
- Estate Tax CalculatorNew
- Cash Back or Low Interest CalculatorNew
- Interest Rate CalculatorNew
- APR CalculatorNew
- IRR CalculatorNew
- Retirement CalculatorNew
- Social Security CalculatorNew
- Credit Card CalculatorNew
- Boat Loan CalculatorNew
- Real Estate CalculatorNew
- Rent vs Buy CalculatorNew
- Marriage Tax CalculatorNew
- Finance Calculator (TVM)New
- Canadian Mortgage CalculatorNew
- UK Mortgage CalculatorNew
Health & Fitness Calculators24 tools
BMR, TDEE, ideal weight, body fat, macros, heart rate, and more — free health and fitness calculators.
- BMR CalculatorNew
- TDEE CalculatorNew
- Ideal Weight CalculatorNew
- Healthy Weight CalculatorNew
- Lean Body Mass CalculatorNew
- Body Surface Area CalculatorNew
- Calories Burned CalculatorNew
- One Rep Max CalculatorNew
- Target Heart Rate CalculatorNew
- Protein CalculatorNew
- Carbohydrate CalculatorNew
- Fat Intake CalculatorNew
- BAC CalculatorNew
- GFR CalculatorNew
- Army Body Fat CalculatorNew
- Body Shape CalculatorNew
- Pregnancy Weight Gain CalculatorNew
- Pregnancy CalculatorNew
- Pregnancy Conception CalculatorNew
- Conception CalculatorNew
- Period CalculatorNew
- Anorexic BMI CalculatorNew
- Overweight CalculatorNew
- Weight Watchers Points CalculatorNew
Math Calculators37 tools
Percentages, exponents, roots, geometry, statistics, and algebra — free math calculators and solvers.
- Percent Error CalculatorNew
- Exponent CalculatorNew
- Root CalculatorNew
- Log CalculatorNew
- Half-Life CalculatorNew
- Pythagorean Theorem CalculatorNew
- Right Triangle CalculatorNew
- Slope CalculatorNew
- Distance CalculatorNew
- Circle CalculatorNew
- Area CalculatorNew
- Volume CalculatorNew
- Surface Area CalculatorNew
- Z-Score CalculatorNew
- Confidence Interval CalculatorNew
- Sample Size CalculatorNew
- Probability CalculatorNew
- Permutation and Combination CalculatorNew
- Quadratic Formula CalculatorNew
- Scientific Notation CalculatorNew
- Rounding CalculatorNew
- GCF CalculatorNew
- LCM CalculatorNew
- Factor CalculatorNew
- Number Sequence CalculatorNew
- Standard Deviation CalculatorNew
- Statistics CalculatorNew
- Mean, Median, Mode, Range CalculatorNew
- Triangle CalculatorNew
- Matrix CalculatorNew
- Binary CalculatorNew
- Hex CalculatorNew
- Big Number CalculatorNew
- Basic CalculatorNew
- Long Division CalculatorNew
- Prime Factorization CalculatorNew
- P-value CalculatorNew
Unit Converters22 tools
Convert length, weight, temperature, speed, area, volume, data size, currency, and number bases — instantly.
- Number Base Converter
- Roman Numeral Converter
- Temperature Converter
- Data Size Converter
- Length Converter
- Weight Converter
- Area Converter
- Volume Converter
- Speed Converter
- Time Converter
- Pressure Converter
- Energy Converter
- Power Converter
- Frequency Converter
- Angle Converter
- Force Converter
- Torque Converter
- Data Transfer Rate Converter
- Fuel Economy Converter
- Currency Converter
- Number to Words ConverterNew
- Conversion CalculatorNew
Text & Web Utilities48 tools
Everyday web and text helpers — word counter, case converter, JSON formatter, QR & barcode generators, and more.
- Word Counter
- Case Converter
- URL Slug Generator
- Base64 Encoder / Decoder
- URL Encoder / Decoder
- Text Cleaner
- Lorem Ipsum Generator
- Password Generator
- JSON Formatter
- Hash Generator
- UUID Generator
- HTML Entity Encoder
- JWT Decoder
- Text to Binary Converter
- QR Code Generator
- Random Number Generator
- Regex Tester
- CSV to JSON Converter
- Morse Code Translator
- Email Signature Generator
- Find and Replace
- Text Diff Checker
- Cron Expression Explainer
- Reading Time Calculator
- Random Word Generator
- Privacy Policy Generator
- Terms of Service Generator
- Wheel SpinnerNew
- Invoice GeneratorNew
- Signature MakerNew
- What Is My IP AddressNew
- Coin FlipNew
- Dice RollerNew
- Text RepeaterNew
- What Is My Screen ResolutionNew
- Alphabetical Order ToolNew
- Emoji Copy and PasteNew
- Barcode GeneratorNew
- Text to SpeechNew
- Reverse Text GeneratorNew
- PX to REM ConverterNew
- Ohm's Law CalculatorNew
- Electricity Cost CalculatorNew
- Voltage Drop CalculatorNew
- Bandwidth CalculatorNew
- Resistor Color Code CalculatorNew
- IP Subnet CalculatorNew
- Love CalculatorNew
AI Writing Tools24 tools
AI-powered writing tools — grammar checker, summarizer, translator, email writer, and content generators.
- AI Meta Description WriterNew
- AI Blog Title GeneratorNew
- AI Product Description WriterNew
- AI Ad Copy GeneratorNew
- AI Social Media Caption GeneratorNew
- AI Paragraph RewriterNew
- AI Content Idea GeneratorNew
- AI FAQ GeneratorNew
- AI Text SummarizerNew
- AI Grammar CheckerNew
- AI TranslatorNew
- AI Email WriterNew
- AI YouTube Title & Description GeneratorNew
- AI Business Name GeneratorNew
- AI Slogan & Tagline GeneratorNew
- AI Cover Letter GeneratorNew
- AI Resume Summary GeneratorNew
- AI LinkedIn Headline GeneratorNew
- AI Instagram Bio GeneratorNew
- AI Review Response GeneratorNew
- AI Out-of-Office Message GeneratorNew
- AI Press Release GeneratorNew
- AI Text to Speech GeneratorNew
- AI Image GeneratorNew
SEO Tools11 tools
Generate and check the on-page signals search engines read — meta tags, schema, sitemaps, and search previews.
- Meta Tag GeneratorNew
- SERP Snippet PreviewNew
- Schema Markup GeneratorNew
- Robots.txt Generator
- XML Sitemap Generator
- Hreflang Tag Generator
- Keyword Density Checker
- llms.txt GeneratorNew
- Headline Analyzer
- SEO Title CheckerNew
- Readability Checker
Date & Time Tools12 tools
Calculate ages, date differences, work hours, and time zones, and convert Unix timestamps — fast and accurate.
- Age Calculator
- Date Difference Calculator
- Unix Timestamp Converter
- Timer & StopwatchNew
- Time Zone ConverterNew
- Hours CalculatorNew
- Date CalculatorNew
- Day of the Week CalculatorNew
- Day CounterNew
- Time Duration CalculatorNew
- Time CalculatorNew
- Time Card CalculatorNew
Design & Color Tools5 tools
Color converters, palettes, gradients, contrast checks, and CSS generators for designers and developers.
- Color Converter
- CSS Gradient Generator
- Color Palette Generator
- Color Contrast Checker
- CSS Box Shadow Generator
Marketing Calculators19 tools
Fast, accurate calculators for ROI, ROAS, CPC, conversion rate, and other growth and ad-spend math.
- ROI Calculator
- ROAS Calculator
- CPC Calculator
- CPM Calculator
- CPA Calculator
- CTR Calculator
- Conversion Rate Calculator
- CAC Calculator
- Customer LTV Calculator
- Average Order Value Calculator
- Profit Margin Calculator
- Break-Even Calculator
- Discount Calculator
- Percentage Change Calculator
- Churn Rate Calculator
- Engagement Rate Calculator
- Percentage Calculator
- Markup Calculator
- Sales Tax Calculator
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Social & Campaign Tools6 tools
Build trackable UTM links, hashtags, and perfect social share previews before you post.
- UTM Campaign URL BuilderNew
- Open Graph GeneratorNew
- Hashtag Generator
- Social Media Character Counter
- Fancy Text GeneratorNew
- YouTube Thumbnail DownloaderNew
All social & campaign tools