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- Combine PDF Merge multiple PDFs into a single document, in exactly the order you choose. Get started
- Image Converter Convert JPG, PNG, HEIC, WebP, and PDF pages to PNG, JPG, or WebP. Get started
- Wheel Spinner Add options, spin the wheel, and let chance make the call. Get started
- Rotate PDF Fix sideways scans in a couple of clicks. Get started
- Percent Off Calculator Discount math: exact savings and the sale price. Get started
- Salary Conversion Calculator Hourly ↔ annual ↔ monthly, from your real schedule. Get started
- Timer A clean countdown that beeps when time is up. Get started
- Stopwatch Time anything to the hundredth, with laps. Get started
- JSON Formatter Pretty print, validate and minify JSON instantly. Get started
- Word Counter Live word, character, sentence and paragraph counts. Get started
- Script Length Estimate the read time of scripts and speeches. Get started
- Text Compare Highlight exactly what changed between two texts. Get started
- Image Compressor Shrink JPG and WebP photos with a quality slider. Get started
- Image Resizer Set exact pixel dimensions, keep the aspect ratio. Get started
- Base64 Encode/Decode Encode text to Base64 and decode it back. Get started
- URL Encoder Percent-encode text for safe links and queries. Get started
- UUID Generator Generate random UUID v4 identifiers in bulk. Get started
- SHA Hash Generator SHA-256 and SHA-1 hashes of text or files. Get started
- Binary Converter Turn text into binary code and back again. Get started
- Hex Converter Translate text into hex bytes and back. Get started
- Base Converter Convert numbers between binary, octal, decimal and hex. Get started
- Unix Timestamp Convert epoch seconds to dates and back. Get started
- Random Number Generator Pick a random number in any range, fair and instant. Get started
- Prime Number Checker Test primality and find the first factor. Get started
- Factor Calculator List every factor and the prime factorization. Get started
- LCM/GCF Calculator Least common multiple and greatest common factor. Get started
- Eigenvalue Calculator Find eigenvalues and see the characteristic polynomial for a matrix. Get started
- Eigenvector Calculator Find an eigenvector basis and verify Av = λv with exact fractions. Get started
- Matrix Multiplication Calculator Multiply two matrices with step-by-step working for every cell. Get started
- Determinant Calculator Determinant of a square matrix, from 1×1 through 6×6. Get started
- Inverse Matrix Calculator Invert a square matrix and verify it multiplies back to I. Get started
- Dot Product Calculator Dot two vectors with every product summed, plus magnitudes and the angle. Get started
- RREF Calculator Reduce a matrix to RREF and solve systems, one elimination step at a time. Get started
- Derivative Calculator Differentiate with steps, up to the second derivative. Get started
- Integral Calculator Antiderivatives with the technique behind every step. Get started
- Quadratic Formula Calculator Roots in exact radicals, discriminant, and vertex. Get started
- QR Code Generator Turn any link or text into a downloadable QR PNG. Get started
- Yes or No Wheel A two-slice decision wheel for instant answers. Get started
- Name Wheel Spin the wheel of names to pick a random winner. Get started
- List Randomizer Shuffle any list into a random order. Get started
- Random Team Generator Split any list of names into fair random teams. Get started
- Random Group Generator Divide people into random groups of any size. Get started
- Bingo Card Generator Printable word bingo cards in 3×3 to 6×6. Get started
- Random Animal Generator Random animals for games, prompts, and quizzes. Get started
- Random Food Generator Can't decide what to eat? Get a random dish. Get started
- Random Country Generator Pick a random country for quizzes and travel games. Get started
- Random Movie Generator A random movie pick for indecisive movie nights. Get started
- Random Show Generator A random series for your next binge. Get started
- Random Book Generator A random book pick with author, year and genre. Get started
- Random Perfume Generator A random scent with brand, notes and year. Get started
- Random Sport Generator Pick a random sport for PE, challenges, and game days. Get started
- Random Color Generator Random named colors with swatches, in a click. Get started
- Random Object Generator Random everyday objects for prompts and games. Get started
- Split PDF Cut a PDF into separate files by ranges or every N pages. Get started
- Compress PDF Compress PDF online to reduce PDF file size with adjustable quality, free in your browser. Get started
- Remove PDF Pages Click the pages to drop and download a clean PDF. Get started
- Add Page Numbers Stamp clean page numbers in the position you want. Get started
- Random Dessert Generator Can't pick a sweet? Get a random dessert. Get started
- Random Date Generator Random dates between any two years. Get started
- LCM Calculator Least common multiple of any numbers. Get started
- GCF Calculator Greatest common factor of any numbers. Get started
- Unit Converter Length, weight, temperature, and more. Get started
- Speed Converter kph, mph, m/s, knots, and Mach. Get started
- Word to PDF Converter Both directions: .docx to PDF and PDF to editable Word. Get started
- PDF to Word Converter PDF to editable Word: running text you can edit. Get started
- Crop PDF Trim margins and whitespace with a visual crop box. Get started
- Photo Background Changer Swap a backdrop for white, color or transparency. Get started
- Average Calculator Mean, median, mode and range from any list. Get started
- Standard Deviation Calculator Population and sample SD, with every step shown. Get started
- Mortgage Calculator Monthly payment, interest and payoff schedule. Get started
- Loan Calculator Payments, total interest and extra-payment savings. Get started
- Auto Loan Calculator True monthly cost with tax, fees and trade-in. Get started
- Interest Calculator Compound growth with deposits, APY and chart. Get started
- BMI Calculator Body mass index, category and healthy range. Get started
- Calorie Calculator Daily target for your goal, plus macros. Get started
- Body Fat Calculator Tape-measure estimate with the Navy method. Get started
- BMR Calculator Resting burn plus every activity level. Get started
- Excel to PDF Spreadsheet to a printable PDF. Get started
- Excel to CSV Every sheet as its own clean CSV. Get started
- Password Generator Strong random passwords, made on your device. Get started
- Abacus Interactive ten-rod soroban with live readout. Get started
- Temperature Converter Celsius, Fahrenheit, Kelvin and Rankine, instantly. Get started
- Random Name Generator Up to 50 original names per click. Get started
- Percent Error Calculator Experimental vs accepted, with steps. Get started
- Half-Life Calculator Remaining amount after any elapsed time. Get started
- Pythagorean Theorem Calculator Any missing side, with live diagram. Get started
- Surface Area Calculator Eight solids with diagrams and steps. Get started
- Volume Calculator Eight solids with diagrams and steps. Get started
- Radians to Degrees Converter Degrees, radians and turns, both ways. Get started
- Fractions Calculator Exact + − × ÷ with mixed numbers. Get started
- Chinese Remainder Theorem Calculator Solve x ≡ a (mod m) systems, with full steps. Get started
- Dilution Calculator C₁V₁ = C₂V₂ for any variable, with units. Get started
- Molarity Calculator Mass, concentration and volume from MW. Get started
- Grade Calculator Course average and letter grade. Get started
- Final Grade Calculator The exam score your target needs. Get started
- Online Notepad Private autosaving notes, Arial/Times. Get started
- Coin Flip Crypto-random heads or tails with tally. Get started
- Convert Comma Separated List to Column Convert comma separated list to column, or flip a column back to commas. Get started
- LaTeX Notepad Type LaTeX math and watch it render instantly, free. Get started
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