Tools starting with W
96 free online tools on AltFTool start with W, listed alphabetically. Every one is free, needs no sign-up and runs in your browser.
Work out exactly what goes on each line of a US Form W-9 — name, entity classification, TIN type and exemptions — before you sign it.
Finance & BusinessCalculate a company's weighted average cost of capital from its equity, debt, and tax inputs.
Finance & BusinessWaist to Height Ratio Calculator
A quick health screen: your waist size divided by your height, with a category.
Health & FitnessCalculate your waist-to-hip ratio and see the WHO health risk band for men and women, plus body shape.
Health & FitnessPlan run-walk intervals by fitness level and target distance, with cycle count, finish time and average pace.
Health & FitnessWork out nail height, frame spacing and hook rating for single pictures and gallery walls using the 145 cm gallery centre line.
CalculatorsWork out how many wallpaper rolls a room needs using drop lengths, pattern repeat and roll size, with waste and cost included.
CalculatorsBuild a warm-up ramp of sets, reps and loadable weights leading up to your top working set or heavy single.
Health & FitnessTrack receipts, serial numbers, warranty terms, and expiry dates.
Security & PrivacyWork out the uploads, view duration and weeks needed to reach a watch-hour target such as YouTube's 4,000 hours.
CalculatorsEstimate daily water intake from weight, activity, and climate.
Health & FitnessSize your overhead tank and sump from BIS per-capita water norms, with dimensions and filling time.
CalculatorsWater Weight Fluctuation Explainer
Break an overnight scale swing into its causes — sodium, glycogen, alcohol, training, cycle and travel — plus the fat-equivalent it would need.
Health & FitnessMix and blend colors in an elegant, canvas-style watercolor sorting puzzle game.
GamesRemove watermarks from images using AI-powered detection and smart inpainting. Supports logos, text, transparent, and repeated watermarks with multiple selection tools and export options.
Image & VideoMark a watermark area and locally stress-test its pixel signal after resize, JPEG compression, grayscale, and centered crop transformations.
Image & VideoRenders an audio file as an FFT spectrogram to visualize clipping, hum and frequency distribution.
Image & VideoA tool that simulates wave interference patterns, allowing users to visualize how waves interact with each other. Users can adjust parameters such as wave frequency, amplitude, and phase to see how they affect the resulting interference pattern.
Education & ScienceRun a local inert structural audit of pasted HTML for common accessibility markup issues without rendering or fetching the page.
DeveloperSee sleep trends from your Oura, Whoop or Fitbit CSV exports.
Health & FitnessCheck real-time weather updates with accurate location-based forecasts.
LifestyleInteractive meteorology weather front simulator with cold/warm air mass dynamics, cloud condensation, and precipitation forecasting.
Education & ScienceWeb Evidence Snapshot Certificate
Hash a local web screenshot and create a deterministic, self-recorded metadata manifest without fetching the source URL.
Security & PrivacyCheck website loading speed instantly with detailed performance metrics.
DeveloperDecode registration and assertion JSON flags, algorithms, and errors.
Security & PrivacyWebcam Background Privacy Scanner
Freeze a webcam frame, review it locally, mark sensitive background areas, and export a covered copy without uploading the image.
Security & PrivacyTest your webcam online: live preview, measured resolution and frame rate, 480p to 4K support probe, brightness check, mirror and PNG snapshots.
Image & VideoConvert WebP images to high-quality PNG, JPG, or PDF files quickly in your browser. Batch convert multiple files and download as a ZIP archive.
Image & VideoWebsite Compliance Page Generator
Generate DPDP grievance officer, licence attribution and subprocessor list pages plus AI content, seller details and tracking pixel disclosures.
Security & PrivacySplit a wedding budget across venue, catering, jewellery and travel, with a per-plate ceiling.
Finance & BusinessWedding Card Print Size Guide India
Indian wedding card trade sizes with flat artwork size, bleed, envelope and insert dimensions, paper GSM and per-invite weight.
Design & ColorWedding Website Privacy Cleanup
Audit a public wedding or event page for over-shared personal details and get a ranked cleanup plan before you send the link.
LifestyleFind the ISO-8601 week number for any date of the year.
CalculatorsPlan your meals for the week with an organized interface and clear next steps.
LifestyleLay out morning, noon, evening and night compartments for all seven days, with tablet counts per compartment and per week.
Health & FitnessPlan a seven-day week in time blocks, see each day's load and free hours, and get warned when two blocks clash.
ProductivityReview weekly progress with real-time goals, tasks, reflections, planning, reminders, analytics, charts, local save, and exportable summaries.
ProductivitySmooth daily weigh-ins into a 7-day moving average and an exponential trend line, with the weekly rate and implied calorie balance.
Health & FitnessProject the date you reach a target weight from your calorie intake, using Mifflin-St Jeor TDEE that is recalculated as your weight changes.
Health & FitnessTrack your weight loss progress with simple daily updates.
Health & FitnessTurn a mg-per-kg instruction into a total daily dose, a per-dose amount and a syrup volume, with optional maximum-dose caps.
Health & FitnessCompute a weighted mean from value and weight pairs with a live running total.
CalculatorsWork out a weighted course grade from assignment weights and scores, and find the mark you still need on the final to hit a target.
Education & ScienceWeighted Vs Unweighted GPA Tool
Compute both weighted and unweighted high school GPA from your courses, with Honors +0.5 and AP/IB +1.0 bonuses.
CalculatorsShort educational self-checks for stress, burnout, exam burnout, digital eye strain, prediabetes risk and AI dependency. Not a diagnosis.
Health & FitnessWellness Journaling Prompt Generator
Draw fresh reflective journaling prompts by theme, set a session length and build a repeatable daily writing practice.
Health & FitnessWhack moles as they pop up from their holes. Test your speed and reflexes in this classic arcade game.
FunFind out which browser, version, engine and operating system you use, check 40+ supported features and get update steps for your browser.
DeveloperSee your screen resolution in CSS and physical pixels, plus viewport size, pixel ratio, aspect ratio, colour depth and refresh rate, updated live.
DeveloperDiscover your genius type with this free intelligence quiz. Answer fun questions to reveal your unique thinking style, strengths, and intellectual personality. Online quiz.
FunWhat Type of Traveler Are You?
Find out what type of traveler you are with our free travel personality quiz. Answer 10 questions to discover your travel style, preferences, and dream destinations.
FunUncover your hidden talent with this free personality quiz. Answer fun questions to reveal your natural abilities, unique gifts, and hidden strengths. Online talent test.
FunDiscover your spirit element with this free personality quiz. Answer 10 questions to find which classical element—fire, water, earth, or air—matches your inner soul.
FunWhat's Your Superpower? Personality Quiz
Discover your hidden superpower with our free personality quiz. Answer 10 fun questions to reveal your unique superpower type and inner strengths. Fun online quiz.
FunWhatsApp Business Catalog Image Maker
Create square WhatsApp catalogue product tiles with grid-legible type, corner-safe insets and 500 px / 5 MB upload checks.
Marketing & SocialWhatsApp Business Reply Templates
Build a reusable set of customer reply templates with valid quick-reply shortcuts and live character counts in English, Hindi or Hinglish.
Finance & BusinessWhatsApp Two-Step Verification Guide
Walkthrough for the WhatsApp two-step PIN, email recovery, passkeys and SIM-swap resilience, with a live account-hardening score.
Security & PrivacyPlan wheel alignment and balancing intervals from road quality and kilometres, and tell the two symptom sets apart.
ProductivityTurn scoops into grams of protein, check the purity of your whey against the label and compare tubs on cost per 25 g of protein.
Health & FitnessWhich Animal Are You? - Spirit Animal Quiz
Discover which animal matches your personality with this fun quiz. Find your spirit animal based on your traits and instincts instantly.
FunWhich Celebrity Do You Look Like?
Upload a photo and discover which celebrity shares your facial features and jawline structure.
Image & VideoWhich Fantasy House Do You Belong In?
Discover which fantasy house you truly belong in with this free personality quiz. Answer fun questions to find your magical house match and inner realm. Fun online quiz.
FunWhich Movie Genre Matches Your Life?
Discover which movie genre best represents your life story with this free personality quiz. Answer fun questions to find your film genre match. Online movie quiz.
FunWhich Mythical Creature Are You?
Discover which mythical creature matches your personality with this free fantasy quiz. Answer fun questions to find your magical creature spirit guide. Online quiz.
FunWhich Time Period Do You Belong In?
Find out which historical time period you truly belong in with this free personality quiz. Answer fun questions to discover your perfect era. Online history quiz.
FunPlay white, pink, brown, blue, violet and grey noise plus rain, fan and ocean sounds, mix them and fall asleep with a fading sleep timer.
LifestyleTrim each line, convert tabs to spaces and drop blank lines.
Text & WritingAdd participants and randomly select one person to pay the bill. Perfect for group dinners and outings.
FunLook up a domain's registration record over RDAP — registrar, creation and expiry dates, nameservers, DNSSEC and plain-English status codes.
DeveloperShows field by field what a public WHOIS or RDAP lookup reveals about a domain owner, scores the exposure, and lists the trade-offs of privacy.
Security & PrivacyWhole30-compliant daily macros translated into meal-template portions, plus the full allowed and excluded food checklist.
Health & FitnessCreate a scannable WiFi QR code so guests can join your network instantly. Generated locally, nothing is uploaded.
ProductivityPick the right respirator for the smoke level using OSHA protection factors, and see how long you can safely stay out.
Health & FitnessScore a powerlifting total against bodyweight using the Wilks coefficient, plus DOTS and IPF GL points for comparison.
Health & FitnessSplit a bonus, inheritance or sale proceeds across tax, emergency fund, high-interest debt, investing and guilt-free spending.
Finance & BusinessTurn three width and height measurements into an exact blind order size for inside or outside mount, with depth, squareness and bracket checks.
CalculatorsTurn a measured wiper blade into the nearest stocked size in millimetres and inches, and identify the arm fitting type.
Education & ScienceGenerate mystical wizard names with magic schools, staff types, and enchanted quotes. Discover your fantasy wizard identity for RPGs and stories.
FunLog pain on a face-based 0-10 scale over time, with averages, severity bands and a timeline children and carers can use.
Health & FitnessConvert DOCX, PPTX, XLSX, CSV, and TXT documents into polished PDF files with previews and batch export.
PDF & DocumentsCount words, characters, sentences, paragraphs, and reading time instantly.
DeveloperCount how often each word appears, sorted from most to least frequent.
Text & WritingBuild a daily vocabulary card in Hindi, Sanskrit, Bengali, Marathi, Gujarati, Tamil, Telugu, Kannada, Malayalam or Urdu with meaning and usage.
Education & ScienceUnscramble timed word puzzles at three difficulty levels, with hints, streaks and a shareable seed that reproduces the same game.
GamesPlay word search puzzles online free — themed word lists, three grid sizes, and drag-to-select letters.
GamesEstimate LLM token usage from a word count before you write, with content-type ratios and a safety margin.
ConvertersFind slow workflow steps by comparing active time, wait time, rework, and throughput pressure.
Finance & BusinessTrain your working memory and fluid intelligence with the scientifically proven Dual N-Back task.
Education & ScienceWorkout Caffeine Dose Calculator
Performance caffeine dose from bodyweight at 3-6 mg/kg, when to take it before training, and how much is still in you at bedtime.
Health & FitnessPlan workout tasks with organized inputs, timelines, and clear next steps.
Health & FitnessBuild AI prompts for Excel and Google Sheets formulas, Notion and Slack AI, meeting notes, SOPs, job descriptions, performance reviews, KPIs, onboarding docs, GST queries and pitch decks.
AI ToolsWatch live local times, UTC offsets and shared working hours for up to twelve cities on one board.
ProductivityExplore fascinating world facts — population, area, GDP, HDI, and more with interactive comparisons and filtering across 121 countries.
Education & ScienceDraw forced-choice would-you-rather dilemmas by category and difficulty, from a shareable seeded deck that never repeats a question.
FunRank drafting, editing and ideation options — hosted, grounded, self-hosted or local — against length, fact-checking, voice, privacy and budget.
Text & WritingRun Pomodoro-style writing sprints with a countdown, log words per sprint, and see your words-per-minute trend and finish time.
Productivity