How-to guides

Quick, step-by-step guides for every tool. Pick one to get started.

Word Counter

  1. Paste or type your text into the box.
  2. Watch words, characters, sentences and reading time update live.
  3. Check the keyword density panel to see your most-used words.
  4. Sign in to save your text and track your writing goals over time.

Age Calculator

  1. Enter your date of birth.
  2. Optionally change the 'age at' date to any date you like.
  3. Click Calculate to see your exact age broken down every way.
  4. See how many days until your next birthday, plus fun life stats.

BMI Calculator

  1. Choose metric (cm/kg) or imperial (ft-in/lb) units.
  2. Enter your height and weight.
  3. Click Calculate to see your BMI and category.
  4. Read your position on the healthy-range chart.

Password Generator

  1. Choose your password length with the slider.
  2. Pick which character types to include.
  3. Click Generate to create a secure password.
  4. Copy it — and check the estimated time to crack it.

QR Code Generator

  1. Type or paste the link or text you want to encode.
  2. Pick your foreground and background colors.
  3. Your QR code updates live.
  4. Download it as a PNG or scalable SVG.

Background Remover

  1. Upload or drop an image (JPG, PNG or WebP).
  2. Click Remove background — the AI runs right in your browser.
  3. Preview the transparent result.
  4. Download your HD cut-out as a PNG.

Case Converter

  1. Type or paste your text into the box.
  2. See it converted into every case format instantly below.
  3. Click Copy on the case you want.
  4. Smart Title Case keeps small words (a, the, of…) lowercase for you.

JSON Formatter

  1. Paste your JSON into the box.
  2. Click Beautify to pretty-print, or Minify to compact it.
  3. If it's invalid, click Auto-repair to fix trailing commas, comments and quotes.
  4. Use Sort keys to order alphabetically, then Copy or Download the result.

Base64 Encode / Decode

  1. Choose Encode or Decode.
  2. Type/paste text, or click File → Base64 to encode a file.
  3. Toggle URL-safe if you need Base64URL output.
  4. Copy the result — decoded images preview instantly and can be saved.

Hash Generator

  1. Type text and click Hash text, or click Hash a file to checksum a file.
  2. All four SHA hashes are generated at once.
  3. Paste a known hash into Verify to confirm it matches.
  4. Copy any hash with one click.

URL Encoder / Decoder

  1. Pick Encode or Decode.
  2. Paste your text or URL.
  3. Toggle 'Component' for encodeURIComponent vs full-URL encoding.
  4. Paste a URL with a query string to see every parameter parsed below.

Color Converter

  1. Pick a color, or type a HEX, RGB or HSL value — the others update instantly.
  2. Check the contrast panel for accessibility (AA/AAA on white and black).
  3. Copy ready-made shades and tints for your palette.
  4. Hit shuffle for instant inspiration.

Unit Converter

  1. Choose a category (Length, Mass, Temperature…).
  2. Type a value and pick the unit you're converting from.
  3. Every other unit updates instantly in the list.
  4. Copy any converted value with one tap.

Lorem Ipsum Generator

  1. Pick a flavor — Classic, Hipster, Tech or Corporate.
  2. Choose how many paragraphs, sentences or words you need.
  3. Toggle 'Wrap in <p>' if you want HTML output.
  4. Click Generate and copy your placeholder text.

Percentage Calculator

  1. Pick the type of percentage question with the tabs.
  2. Enter your two numbers.
  3. Read the answer instantly — no formulas needed.
  4. Share your result as a card.

Loan & EMI Calculator

  1. Enter the loan amount, interest rate and term in years.
  2. See your monthly payment, total interest and total paid instantly.
  3. Expand the amortization schedule to see every payment.
  4. Share the result or try different rates.

Tip Calculator

  1. Enter the bill amount and choose your currency.
  2. Pick a tip percentage (presets or slider).
  3. Set how many people are splitting.
  4. See the tip, total and exact amount each person pays.

Timestamp Converter

  1. See the current Unix time (seconds, millis and ISO) ticking live.
  2. Paste a timestamp to convert it to local, UTC, ISO and relative time.
  3. Type a date to get its Unix timestamp.
  4. Copy any value with one tap.

Markdown to HTML

  1. Type or paste Markdown in the left panel.
  2. Watch the live preview render on the right.
  3. Switch to the HTML tab to see the generated code.
  4. Click Copy HTML to use it anywhere.

Text Diff Checker

  1. Paste your original text on the left.
  2. Paste the changed version on the right.
  3. See a line-by-line diff with additions and removals highlighted.
  4. Check the similarity score and change counts.

BMR Calculator

  1. Choose metric or imperial and your sex.
  2. Enter age, height and weight.
  3. See your BMR — calories your body burns at complete rest.
  4. Read the table for maintenance calories by activity level.

Calorie Calculator

  1. Enter your sex, age, height and weight.
  2. Pick your activity level.
  3. See your maintenance calories (TDEE).
  4. Read goal targets for losing or gaining weight at a safe pace.

Water Intake Calculator

  1. Enter your body weight (kg or lb).
  2. Set your daily exercise minutes.
  3. Choose your climate.
  4. See your recommended water in litres, cups and bottles.

Body Fat Calculator

  1. Choose cm or inches and your sex.
  2. Measure and enter your height, neck and waist (plus hips for women).
  3. See your estimated body-fat percentage and category.
  4. Share your result.

Ovulation Calculator

  1. Enter the first day of your last period.
  2. Set your average cycle length.
  3. See your estimated ovulation day and fertile window.
  4. Check your next three predicted period dates.

Sleep Cycle Calculator

  1. Choose whether you're setting a wake time or a bedtime.
  2. Enter the time (or tap 'Sleep now').
  3. See recommended times aligned to full 90-minute cycles.
  4. Aim for the recommended (5–6 cycle) option.

One-Rep Max Calculator

  1. Enter the weight you lifted and how many reps you did.
  2. See your estimated 1-rep max.
  3. Use the %-of-1RM chart to pick training weights.
  4. Best accuracy comes from sets of 1–10 reps.

Macro Calculator

  1. Enter your daily calorie target.
  2. Pick a diet style (balanced, high-protein, low-carb, keto…).
  3. See your protein, carb and fat grams and split.
  4. Adjust and re-check as your goals change.

Running Pace Calculator

  1. Enter the distance you ran and its unit.
  2. Enter your time as hh:mm:ss or mm:ss.
  3. See your pace per km and per mile.
  4. Check projected times for common race distances.

TDEE Calculator

  1. Enter your sex, age, height and weight.
  2. Choose the activity level that matches your week.
  3. See your TDEE, plus the BMR and activity multiplier behind it.
  4. Use it to set your calorie and macro targets.

Calorie Deficit Calculator

  1. Enter your details and activity level.
  2. Set your goal weight and weekly pace.
  3. See the calories to eat each day and your target date.
  4. If it flags a very low intake, choose a gentler pace.

Heart Rate Zone Calculator

  1. Enter your age to estimate your max heart rate.
  2. Optionally add your resting heart rate for personalized zones.
  3. See BPM ranges for all five training zones.
  4. Train in the right zone for your goal — Zone 2 for base, Zone 4–5 for speed.

Profit Margin Calculator

  1. Pick your currency.
  2. Enter your revenue (selling price) and cost of goods.
  3. See your gross profit, profit margin % and markup %.
  4. Adjust price or cost to hit a target margin.

Break-even Calculator

  1. Enter your fixed costs for the period.
  2. Enter the price per unit and variable cost per unit.
  3. See the units and revenue you need to break even.
  4. Check your contribution margin per unit.

ROI Calculator

  1. Enter the amount you invested.
  2. Enter what you got back (final value).
  3. Optionally add the duration in years for an annualized figure.
  4. See your ROI %, net profit and annualized return.

Markup & Pricing Calculator

  1. Pick your currency and enter the item cost.
  2. Drag the slider to your target profit margin.
  3. See the selling price, profit per item and markup.
  4. Adjust the margin to test different price points.

Sales Tax & VAT Calculator

  1. Choose Add tax or Remove tax.
  2. Pick your currency and enter the amount.
  3. Enter the tax/VAT rate.
  4. See the net, tax and total amounts.

Cash Runway Calculator

  1. Enter your cash in the bank.
  2. Enter your monthly revenue and monthly expenses.
  3. See your burn rate and months of runway.
  4. If you're profitable, it tells you how much you're banking each month.

Freelance Rate Calculator

  1. Enter the yearly income you want to take home.
  2. Add your annual business costs.
  3. Set your weeks off and billable hours per week.
  4. See the minimum hourly and day rate to charge.

Invoice Generator

  1. Enter your details and your client's details.
  2. Add line items with quantity and rate.
  3. Set a tax rate and add any notes.
  4. Click Download / Print PDF and save it.

Project Quote Estimator

  1. Set your hourly rate and currency.
  2. List each task and its estimated hours.
  3. Add a contingency % for the unexpected.
  4. Download the quote as a PDF to send.

Freelance Time Tracker

  1. Type what you're working on and hit Start.
  2. Stop or switch tasks with one tap.
  3. Set your hourly rate to see billable value.
  4. Totals stay saved in your browser.

Self-Employment Tax Calculator

  1. Enter your net self-employment profit after expenses.
  2. Add any W-2 wages already taxed for Social Security.
  3. See your total SE tax and quarterly set-aside.
  4. Note the deductible half that lowers your income tax.

Freelance Contract Generator

  1. Fill in your details, the client's, and the project.
  2. Set fees, payment schedule and deadline.
  3. Adjust revisions, kill fee and late-fee terms.
  4. Download the contract as a PDF and sign.

Readability Checker

  1. Paste your text into the box.
  2. Read your reading-ease score and grade level.
  3. Check sentence length and complex-word counts.
  4. Apply the tips and re-check to improve.

Headline Analyzer

  1. Type or paste your headline.
  2. See its score out of 100 and length.
  3. Check power words, emotion and numbers.
  4. Apply the tips and test variations.

Pomodoro Timer

  1. Press Start to begin a 25-minute focus sprint.
  2. Take the short break when the chime sounds.
  3. After four sprints, enjoy a longer break.
  4. Adjust the minute lengths to fit your flow.

Countdown Timer

  1. Name your event (optional).
  2. Pick the date and time to count down to.
  3. Or tap a quick preset like New Year.
  4. Watch the live countdown tick down.

To-Do List

  1. Type a task and press Enter.
  2. Tick the box to mark it done.
  3. Drag tasks to reorder your priorities.
  4. Filter by active or done as you go.

Habit Tracker

  1. Add the habits you want to build.
  2. Tick each day you complete a habit.
  3. Keep the streak alive day after day.
  4. Everything saves privately in your browser.

Decision Wheel

  1. Type your options, one per line.
  2. Press SPIN in the middle of the wheel.
  3. Watch it slow to a stop on a winner.
  4. Spin again as many times as you like.

Meeting Cost Calculator

  1. Enter the number of attendees.
  2. Set the average annual salary.
  3. Add the planned length in minutes.
  4. Hit Start for a live cost meter during the meeting.

Color Contrast Checker

  1. Pick your text colour.
  2. Pick your background colour.
  3. Read the contrast ratio and pass/fail badges.
  4. Adjust until you hit AA or AAA.

CSS Gradient Generator

  1. Choose linear or radial.
  2. Pick colours and drag the stops.
  3. Set the angle for linear gradients.
  4. Copy the CSS and paste into your styles.

Color Palette Generator

  1. Pick or paste a base colour.
  2. Choose a harmony like analogous or complementary.
  3. Randomise until you love it.
  4. Click a swatch to copy its hex code.

Body Shape Calculator

  1. Choose inches or centimetres.
  2. Measure your bust, waist and hips.
  3. Enter the three numbers.
  4. See your shape and personalised styling tips.

Clothing Size Converter

  1. Choose women's or men's sizing.
  2. Pick the region your size is in.
  3. Type your size.
  4. See the equivalent sizes across regions.

Bra Size Calculator

  1. Measure snugly under your bust for the band.
  2. Measure around the fullest part for the bust.
  3. Enter both in inches or centimetres.
  4. See your US, UK and EU size instantly.

Shoe Size Converter

  1. Choose women's or men's sizing.
  2. Pick the system your size is in.
  3. Enter your size.
  4. See the equivalents — or match your foot length in cm.

Capsule Wardrobe Planner

  1. Slide to set how many of each piece you have.
  2. Watch the possible-outfit count update live.
  3. Aim for a tight, versatile colour palette.
  4. Build a capsule that maximises outfits per piece.

Outfit Generator

  1. Choose the occasion.
  2. Hit generate for a full outfit idea.
  3. Keep generating until one clicks.
  4. Recreate it from your own wardrobe.

Skin Undertone Finder

  1. Answer each question honestly.
  2. Use natural daylight for the best read.
  3. Get your undertone result.
  4. See the colours and foundations that suit you.

Skin Type Quiz

  1. Answer how your skin feels and behaves.
  2. Do it a few hours after cleansing for accuracy.
  3. Get your skin-type result.
  4. Follow the routine and ingredient tips.

Color Season Analysis

  1. Answer questions about your colouring.
  2. Use natural light and no makeup for accuracy.
  3. Get your colour season.
  4. Shop and dress from your flattering palette.

Skincare Routine Order

  1. Tick the products in your routine.
  2. Switch between AM and PM.
  3. Follow the numbered order shown.
  4. Finish mornings with sunscreen, always.

Skincare Ingredient Checker

  1. Tap the actives you want to combine.
  2. See any 'avoid' or 'use with care' warnings.
  3. Read how to schedule them (AM vs PM).
  4. Introduce new actives one at a time.

Foundation Shade Finder

  1. Choose your undertone — warm, neutral or cool.
  2. Slide to your skin depth.
  3. See your shade family, swatch and code.
  4. Test the match on your jawline in daylight.

PDF Reader

  1. Drop in the PDF you want to read.
  2. Scroll through all the pages.
  3. Zoom in and out for comfort.
  4. Open another PDF anytime.

Merge PDF

  1. Drop in two or more PDF files.
  2. Drag or use arrows to set the order.
  3. Click Merge PDFs.
  4. Your combined PDF downloads instantly.

Split PDF

  1. Drop in your PDF.
  2. Type the pages to extract, e.g. 1-3, 5.
  3. Click Extract pages.
  4. Download your new, smaller PDF.

Images to PDF

  1. Drop in your JPG or PNG images.
  2. Drag to set the page order.
  3. Choose fit-to-image or A4.
  4. Click Create PDF to download.

PDF to Images

  1. Drop in your PDF.
  2. Pick the render quality.
  3. Preview every page as an image.
  4. Download one page or all of them.

Rotate PDF

  1. Drop in your PDF.
  2. Choose 90°, 180° or 270°.
  3. Click Rotate & download.
  4. Save your corrected PDF.

Image Resizer

  1. Drop in your image.
  2. Enter a new width or height, or pick a %.
  3. Keep aspect ratio locked to avoid stretching.
  4. Click Resize & download.

Image Compressor

  1. Drop in your image.
  2. Drag the quality slider and watch the size drop.
  3. Choose JPG or WebP output.
  4. Download your smaller image.

Image Cropper

  1. Drop in your image.
  2. Pick an aspect ratio or Free.
  3. Drag the box to position, drag the corner to size.
  4. Click Crop & download.

Image Format Converter

  1. Drop in your image.
  2. Choose PNG, JPG or WebP.
  3. Pick a background if converting to JPG.
  4. Click Convert & download.

Rotate & Flip Image

  1. Drop in your image.
  2. Rotate left/right or flip H/V.
  3. Check the live preview.
  4. Click Download to save it.

Image Color Picker

  1. Drop in an image or screenshot.
  2. Move your cursor to preview a color.
  3. Click to add it to your picked list.
  4. Click a saved color to copy its hex.

Discount Calculator

  1. Enter the original price.
  2. Set the discount percentage.
  3. Add sales tax if you need the out-the-door price.
  4. See your savings and final price.

Email Signature Generator

  1. Fill in your name, title and contact details.
  2. Pick an accent color.
  3. Check the live preview.
  4. Copy and paste into your email settings.

UTM Link Builder

  1. Paste your landing page URL.
  2. Fill in source, medium and campaign.
  3. Add term and content if you need them.
  4. Copy the finished tracking URL.

ROAS Calculator

  1. Enter revenue generated by the ads.
  2. Enter how much you spent on the ads.
  3. Optionally add your profit margin.
  4. See ROAS, ACoS and your break-even point.

CAC & LTV Calculator

  1. Enter marketing spend and new customers for CAC.
  2. Add order value, frequency, lifespan and margin for LTV.
  3. See your LTV:CAC ratio and payback period.
  4. Aim for 3:1 or better.

Conversion Rate Calculator

  1. Enter your visitors or sessions.
  2. Enter your conversions.
  3. Add revenue to see per-visitor value.
  4. Set a target rate to see the conversions needed.

Bill Splitter

  1. Enter the bill total.
  2. Set how many people are splitting.
  3. Choose a tip percentage.
  4. See exactly what each person owes.

GPA Calculator

  1. Add a row for each course.
  2. Enter its credit hours.
  3. Pick the letter grade you earned.
  4. See your GPA update instantly.

Final Grade Calculator

  1. Enter your current grade before the final.
  2. Enter the grade you're aiming for.
  3. Enter how much the final is worth.
  4. See the score you need to hit.

Date Difference Calculator

  1. Pick a start date.
  2. Pick an end date.
  3. Optionally include the end day.
  4. See the difference in days, weeks, months and years.

Time Zone Meeting Planner

  1. Set your own time zone.
  2. Slide to your proposed meeting hour.
  3. Add the cities your team is in.
  4. Pick a time where everyone shows ☀️.

Fuel Cost Calculator

  1. Choose US or metric units.
  2. Enter distance, fuel economy and fuel price.
  3. Add how many people are splitting.
  4. See the trip cost and each person's share.

Online Notepad

  1. Start typing your note.
  2. It autosaves in your browser automatically.
  3. Come back anytime — it's still here.
  4. Download it as a .txt file when you're done.

Find & Replace Text

  1. Paste your text.
  2. Type what to find and what to replace it with.
  3. Toggle case-sensitive or regex if needed.
  4. Copy the replaced result.

Remove Line Breaks

  1. Paste text with unwanted line breaks.
  2. Choose to convert, remove or keep paragraphs.
  3. Toggle extra-space and empty-line cleanup.
  4. Copy the cleaned text.

Remove Duplicate Lines

  1. Paste your list, one item per line.
  2. Choose case, trim and empty-line options.
  3. Optionally sort the result.
  4. Copy your clean, unique list.

Sort & Alphabetize Lines

  1. Paste your lines.
  2. Pick a sort mode — A→Z, numeric, length and more.
  3. Optionally ignore case or remove duplicates.
  4. Copy the sorted result.

Social Character Counter

  1. Type or paste your post.
  2. Watch the count against each platform.
  3. Green means room to spare, red means over.
  4. Trim until it fits where you're posting.