All Free Online Tools

Project your 529 college savings growth — enter savings, monthly contributions, and years to see the future value.

Calculate alcohol by volume from original and final gravity readings — instant ABV, attenuation, and total alcohol for homebrewers.

Calculate your exact age in years, months, and days with totals, a next-birthday countdown, and one-click copy. Free, instant, and private.

Free online alarm clock — set multiple alarms, snooze, and wake to a loud alarm sound. Works in your browser.

Solve linear and quadratic equations for x, or evaluate math expressions — free, instant, no signup.

Estimate how regular payments grow over time — enter payment, rate, and years to see future value, contributions, and interest.

Free 7-question anxiety screening based on the GAD-7 questionnaire.

Estimate your AP exam score — pick your subject, enter practice-test points, and get your weighted composite and 1–5 score.

Simplify any width and height to its aspect ratio (e.g. 16:9), or find a missing dimension from a ratio. Free, no signup.

Calculate how much asphalt you need — tons, cubic yards and estimated cost for driveways and parking areas. Free, instant, no signup.

Calculate the mean (average) of any numbers instantly — plus median, mode, range, min, max, count and sum. Free, no signup.

A powerful tool for your daily workflow.

Estimate blood alcohol content from weight, drinks, and time using the Widmark formula — educational estimates only.

Estimate your one-rep max from any bench press set with training percentages.

A powerful tool for your daily workflow.

Estimate body fat percentage with the U.S. Navy method.

Estimate your body fat percentage with the proven U.S. Navy tape-measure method — instant BFP, fat mass and lean mass results.

A powerful tool for your daily workflow.

A powerful tool for your daily workflow.

A powerful tool for your daily workflow.

A powerful tool for your daily workflow.

Estimate federal tax on your investment gains — long-term or short-term, with 2025 and 2026 IRS brackets built in.

Convert cat years to human years and find your cat life stage.

Free CD rate calculator — certificate of deposit growth, maturity value and APY.

Calculate your CGPA or GPA instantly for 4.0, 5.0 and 10.0 grading scales. Add courses with credits and grades, and optionally include your previous record for a cumulative result.

A simple online tally counter — tap, use + and - buttons, or press spacebar. Custom steps and session stats.

Convert centimeters to inches and inches to centimeters instantly.

Use the Trencada Compound Interest Calculator to estimate investment growth easily. Calculate returns, savings, and future value with accurate results.

Estimate concrete cubic yards, bag counts, and cost for slabs and driveways.

Countdown timer with 5/10/15/20/30-minute presets and custom times, tab-title display, and finish alarm.

Free credit card payoff calculator — months to debt-free, interest, fixed vs minimum payments.

Convert cups to grams (and grams to cups) for 34 baking ingredients — flour, sugar, butter, oil and more. Free, no signup.

Convert currencies online with Trencada using current exchange rates. Quickly calculate the value of USD, EUR, GBP, CAD, and other currencies for free.

Free online daily planner — time-block your tasks, check them off, and watch your progress bar fill.

Find dates N days from today, count days between dates, add or subtract days.

Convert decimals to simplified fractions and fractions to decimals — with steps.

Calculate discounts online for free. Find the discount amount, final price, and total savings quickly using a simple and easy-to-use calculator.

A powerful tool for your daily workflow.

Estimate your pregnancy due date — from your last period or your IVF embryo transfer date (Day 3, 5, or 6), with gestational age and trimester.

Track the time remaining until your next exam with a live countdown timer. Set your exam date and time to see the remaining days, hours, minutes, and seconds.

A powerful tool for your daily workflow.

Use the Trencada FD Calculator to calculate fixed deposit interest, maturity amount, and returns instantly with accurate and simple inputs.

Free FFMI calculator — fat-free mass index, lean mass and muscle-building score.

Plan financial independence free — find your FIRE number, years to FI, and whether you have already hit Coast FIRE.

Project investment and savings growth with compound interest. Enter initial investment, monthly contributions, rate and years — free, no signup.

Calculate fuel cost for any road trip from distance, MPG, and gas price.

Find the greatest common factor of two or more numbers with steps.

Free GPA calculator for college and high school. Compute semester and cumulative GPA from your courses, grades, and credit hours.

Compute weighted course grades and the final exam score you need.

Find out how much gravel, crushed stone, pea gravel or sand you need — in tons, cubic yards, bags and cost. Free, instant, no signup.

Use our GST Calculator to quickly add or remove GST from any amount. Accurate, fast, and easy tool for businesses and individuals.

Free online guitar tuner — tune by microphone with a live needle, or play reference tones for each string.

Free online habit tracker — check in daily, build streaks, and see your weekly progress at a glance.

A powerful tool for your daily workflow.

Free online hearing test — check your hearing with tones at different pitches.

Free heart rate calculator — max heart rate, Karvonen training zones and fat-burn zone.

Find your 5 heart rate training zones.

Predict a childs adult height from parents heights.

See how many years your savings last based on spending, growth, and inflation. Free, no signup.

A powerful tool for your daily workflow.

Estimate your income tax for FY 2025-26 in seconds. Compare old vs new regimes with 80C/80D deductions — free, no signup.

Find the least common multiple of two or more numbers with step-by-step working.

See your full loan payoff plan free — monthly payment, total interest, payoff date, and a month-by-month amortization schedule.

Calculate monthly loan payments, total interest and payoff schedule — free online loan calculator.

Find your debt-free date and total interest.

A fun name-based compatibility score — just for entertainment.

Calculate daily calories and protein, carb and fat targets for your goal.

Pace chart for marathon and half marathon goals.

A powerful tool for your daily workflow.

What is your mental age? Take the free 12-question quiz and get your result instantly. No signup.

Convert milliliters to cups and cups to milliliters.

Estimate your monthly mortgage payment, total interest, and full amortization schedule — free, instant, no signup.

Find out how much mulch you need — cubic yards, 2-cu-ft bags, and cost estimates from bed length, width, depth and waste allowance.

Find your life path, destiny and soul urge numbers from your birth date and full name, with meanings. Free, no signup.

Free one rep max calculator — estimate your 1RM and get a training percentage chart.

A powerful tool for your daily workflow.

Calculate overtime pay at time-and-a-half or double time. Enter hourly rate, overtime hours and pay frequency — free, no signup.

Free ovulation calculator — fertile window, ovulation day, conception and due dates.

A powerful tool for your daily workflow.

Calculate your take-home pay — enter gross pay, state, and filing status for an estimated paycheck breakdown with 2026 federal, FICA, and state taxes.

Calculate PayPal fees instantly — see the fee, what you keep, or reverse-calculate what to charge so you receive exactly what you want.

Calculate percentages online for free. Find percentages, increases, decreases, discounts, and percentage differences quickly with a simple calculator.

Predict your next period dates — enter your last period and cycle length to see your upcoming 6 periods estimated instantly.

Compute event probabilities, combinations and binomial odds.

Solve the unknown value in any proportion (a:b = c:d) by cross-multiplication.

A powerful tool for your daily workflow.

Solve for a, b or hypotenuse c with the Pythagorean theorem. Enter any two sides and see the result with steps — free, no signup.

Solve quadratic equations ax² + bx + c = 0 step by step. Shows the discriminant and both roots — free, no signup.

Simplify ratios to lowest terms and solve missing values in proportions.

Find how much rent you can afford on your income, or what income you need.

Check if your resting heart rate is healthy.

Use our Retirement Calculator to estimate savings, future income, and retirement goals. Plan your financial future with accurate results.

Estimate how much a HECM reverse mortgage could pay — enter age, home value, mortgage owed, and rate for an instant estimate.

Find your ring size from mm or use the chart.

Calculate your required minimum distribution instantly — enter your age and last year balance to get your IRS RMD amount.

Estimate roofing materials from roof dimensions and pitch — total area, roofing squares, shingle bundles with waste, and cost. Free, no signup.

Calculate running pace, finish time or distance — with pace in min/km and min/mile, speed in km/h and mph. Free, no signup.

Convert hourly wage to yearly salary — see pay per hour, week, month and year.

Convert your salary to an estimated hourly rate based on your pay, working hours, and weeks worked. Calculate annual, monthly, weekly, and hourly pay equivalents.

A powerful tool for your daily workflow.

Estimate the current value of US Series EE and I savings bonds. Enter face value, purchase date and bond type — free, no signup.

See how savings grow with compound interest.

Find the best times to fall asleep and wake up based on natural 90-minute sleep cycles.

Calculate square footage for any room or shape — rectangles, circles, triangles, L-shapes — with multi-room totals and cost estimates.

Mean, median, mode, range, variance and standard deviation for any dataset.

Calculate subnets from any IP and CIDR. Network, broadcast, host ranges and more.

A powerful tool for your daily workflow.

Calculate floor tiles and boxes needed for any room with waste allowance.

Free time card calculator: enter clock-in/clock-out times and breaks to calculate daily and weekly work hours, overtime, and gross pay. No signup needed.

Calculate time durations free — hours between two times, add or subtract hours and minutes, convert to decimal hours. No signup, instant.

Convert any time between world time zones instantly.

Free timesheet calculator — weekly hours, overtime and gross pay from clock-in/out times.

Calculate tip amounts, totals and per-person shares in seconds.

Convert length, weight, temperature, volume, speed, area, time, and data units instantly — free online unit converter, no signup.

Estimate 2026 US federal income tax, FICA and take-home pay by filing status.

Calculate VAT online for free. Add or remove VAT from a price, find the VAT amount, and calculate the final price quickly and easily.

Calculate the volume of cubes, cylinders, spheres, cones, pyramids and prisms.

Find your recommended daily water intake free — enter your weight, activity level, and climate to get your target in liters and glasses. No signup.

Add page numbers to PDF online for free with trencada.com. Secure, fast, and easy to use. No registration or software installation needed.

Securely add watermarks to PDFs online for free with trencada.com. Protect your confidential documents with custom text or image watermarks.

Annotate PDFs online for free with trencada. Add text, highlights, comments, and shapes effortlessly. Secure, fast, and no installation required.

Stamp sequential Bates numbers (e.g. ABC-000001) on every PDF page. Free, online, no signup — files never leave your browser.

Reduce PDF file sizes online for free with trencada. Compress bulky PDF documents quickly and securely without losing quality

Create blank PDFs free with Trencada. Pick A4, Letter, or Legal — portrait or landscape, any page count — generated 100% in your browser.

Crop the Aadhaar card strip from your e-Aadhaar PDF and place it on an A4 page — free, print-ready, and 100% in your browser.

Crop PDF files online for free with trencada.com! Remove unnecessary margins, customize page sizes, and improve readability instantly. Fast & Secure!

View PDFs online free with Trencada — open, navigate, and zoom any PDF in your browser. No installs, no signup; files never leave your device.

Rearrange, delete, and organize PDF pages online for free with trencada.com. Fast, secure, and easy to use. No software download needed! Try our Free!

Create fillable PDF forms in your browser — add text fields, checkboxes, radio buttons, dropdowns and signature fields to any PDF or a blank document, then download a working fillable PDF. Free, no signup, files never leave your device.

Flatten PDF forms free — bake fillable form fields into permanent, non-editable content. Runs in your browser, no signup.

Convert PDF pages from color to grayscale online. Create a black and white PDF for printing, document sharing, reading, and reducing unnecessary color.

Translate PDF documents online into your preferred language. Upload your PDF, select the target language, and translate your document quickly and easily.

Free online PDF repair tool. Rebuild damaged or corrupted PDF files right in your browser — no upload, no signup.

Resize PDF pages online by changing page size and dimensions. Adjust PDF files for printing, uploading, sharing, or specific document size requirements

Rotate PDF pages online for free with trencada.com. Easily rotate single pages or entire documents. Secure, fast, and no installation needed!

Scan documents with your phone or webcam and save them as a PDF. Free, online, no signup — everything stays on your device.

Split and crop Amazon shipping labels and invoices for thermal or A4 printing — free, 100% in your browser.

Create barcodes online for products, inventory, labels, events, and other uses. Enter your data, generate a barcode, and download or print it easily.

Crop Flipkart shipping labels & invoices for thermal or A4 printing — free, 100% in your browser.

Create professional invoices online. Add your business and client details, line items, taxes, and discounts, then print or save as PDF.

Crop Meesho shipping labels for thermal or A4 printing — free, 100% in your browser.

Create QR codes online for URLs, text, contact information, and other content. Generate and download your QR code quickly without installing software.

Make printable receipts online with no signup. Add your store info, items, tax, and payment details, then download a PDF sized for 58mm/80mm thermal printers or letter pages.

Unscramble letters and find all valid anagrams from a built-in dictionary. Works with 3–12 letter words — free, no signup.

Free baby name generator — unique girl, boy and unisex names with meanings.

Quickly and accurately count the number of words, characters, sentences, and paragraphs in your text with the Trencada free online Word Counter. Perfect for writers, students, and SEO professionals to ensure content meets strict length requirements instantly.

Free citation generator — build MLA, APA, Chicago, IEEE and AMA citations in one click.

Create printable Cornell Notes templates online. Customize the header, cue column, and summary, then generate and download a Cornell Notes PDF.

A powerful tool for your daily workflow.

Free dog name generator — girl dog names, boy dog names, cute, funny and tough.

Realistic random first and last names for test data, writing, games and placeholders. Gender filter, click any name to copy — free, no signup.

Generate elf, dwarf, orc, human and dark lord names for D&D, novels, games and RPGs. Click any name to copy it — free, no signup.

Search and replace words, phrases, or characters in seconds with the free Trencada Find & Replace tool. No downloads, no signup, and your text never leaves your browser.

Generate cursive fonts and fancy Unicode text styles. Type once, copy and paste anywhere.

Convert HTML to Markdown online instantly. Free, no signup.

Generate clean lorem ipsum placeholder text by paragraphs, sentences, or words. Choose plain text or HTML output, then copy or download it — free, no signup, everything runs in your browser.

Translate text to Morse code and decode Morse back to text instantly — with sound playback, copy, and download. Free, no signup.

Generate strong, random passwords online for free. Customizable length and characters with a strength meter — 100% private, nothing leaves your browser.

Paste your text to find punctuation errors: spacing, capitalization, repeated marks, and more.

A powerful tool for your daily workflow.

A powerful tool for your daily workflow.

Remove duplicate lines from text, lists, and data online. Paste or upload a .txt file, keep the first or last occurrence, and copy the cleaned result in seconds.

Quickly flip your words, sentences, or entire paragraphs backwards with the Trencada free online Reverse Text tool. Instantly generate mirrored text for social media, puzzles, or creative coding without downloading any software.

Sort words and lines alphabetically in seconds with the free Trencada text sorter. Choose A–Z or Z–A, control case sensitivity, and clean up duplicates. No signup needed.

Convert SRT subtitles to WebVTT online. Free, no signup.

Shift SRT/VTT subtitle timing earlier or later. Free, no signup.

Count syllables in any text instantly — live totals, averages, and a per-word breakdown as you type.

Quickly format your writing with the trencada free online Text Case Converter. Easily transform any text to uppercase, lowercase, title case, or sentence case with a single click, saving you the hassle of manually retyping documents.

Tidy messy, copied text with the Trencada Text Cleaner — remove duplicate lines, extra spaces, and empty lines. Free, no signup; text never leaves your browser.

Quickly compare two text documents side-by-side with the Trencada free online Text Difference Checker. Instantly highlight edits, deletions, and additions to find exact changes between versions without downloading any software.

Turn typed text into handwritten-style notes in your browser. Pick from 7 handwriting styles, 3 paper backgrounds, and 3 ink colors, then download as PDF or PNG.

Paste text and hear it read aloud — adjustable voices, speed, and pitch with word highlighting.

Create unique usernames and gamertags for Instagram, TikTok, gaming, Reddit and more. Style filters, numbers and symbols — free, no signup.

A powerful tool for your daily workflow.

Wordle helper — enter known letters and grays to filter all 5-letter words. Finds candidates for Wordle answers — free, no signup.

Convert audio files between MP3, WAV, OGG and M4A — free, in your browser, no upload.

Resize video to 480p, 720p, or 1080p — free, in your browser, no upload.

Turn animated GIFs into MP4 video — much smaller files, converted in your browser, nothing uploaded.

Combine a video file with an audio track — free, in your browser, no upload.

Convert MKV videos to MP4 — fast, free, in your browser, no upload.

Convert MOV videos to MP4 — fast, free, in your browser, no upload.

Extract the audio from any video and save it as MP3 — free, in your browser, no uploads.

Extract lossless WAV audio from any video — free, in your browser, no upload.

Remove the audio track from any video in seconds — right in your browser. No upload, no signup, no quality loss.

Reduce video file size with adjustable quality — free, in your browser, no upload.

Convert videos to WebM, MP4, or animated GIF online — free, no signup. Your video never leaves your browser.

Turn any video clip into an animated GIF with custom size and frame rate — free, in your browser.

Trim and compress videos online with ease. Remove unwanted sections, reduce video file size, and download the edited video without installing software.

Convert AVIF images to JPG, JPEG, or PNG in batches — free, quality options, 100% in your browser.

Convert AVIF images to PNG free — multiple files, in your browser, nothing uploaded.

Remove backgrounds from photos automatically — free online, no signup.

Convert BMP bitmaps to compressed JPG images online. Adjustable quality, free.

Crop images online with Trencada: drag a selection box, lock aspect ratios (1:1, 4:3, 16:9), and download the result as PNG or JPG. Free, no signup.

View photo metadata and remove EXIF data online. Check camera, GPS, date, and image information, then clean metadata before sharing your photos.

Turn a PNG, JPG, WEBP, GIF, or BMP image into a complete favicon package online — multi-size ICO, PNG icons, and ready-to-paste HTML. Free, no signup, 100% in your browser.