Free Online Utility Tools

Count words, characters, sentences, and paragraphs instantly as you type. Includes reading time estimate — free word counter for essays and articles.

Convert text to UPPERCASE, lowercase, Title Case, camelCase, PascalCase, snake_case, or kebab-case instantly. One-click copy — free online tool.

Compare two texts and highlight differences line by line. Added lines in green, removed in red — ideal for documents, code snippets, and edit reviews.

Count characters, words, sentences, and paragraphs in real time — with Twitter/SMS limit indicators.

Convert JSON arrays to CSV with automatic column detection, custom delimiters, and download.

Convert CSV to JSON array with automatic type inference and configurable delimiters.

Turn plain text into fancy Unicode fonts — bold, italic, script, bubble, square, upside down, and more.

Calculate percentages, percentage change, and find what percent one number is of another.

Calculate your exact age in years, months, and days from your birthdate. Also shows hours, minutes, and days until your next birthday. Free, no signup required.

Convert colors between HEX, RGB, and HSL formats with a live preview swatch. Essential for web designers and developers — copy any format with one click.

Convert length, weight, and temperature units instantly. Supports metric and imperial — meters, feet, kg, lbs, Celsius, Fahrenheit, and more.

Format, validate, and minify JSON in your browser. Pretty-print raw JSON with indentation, catch inline syntax errors, or collapse to one line.

Generate SHA-1, SHA-256, and SHA-512 hashes from any text. Results update live as you type — runs via Web Crypto API, data stays in your browser.

Test and debug regular expressions with live match highlighting. Supports g, i, m, s flags and capture groups — ideal for developers and data engineers.

Generate secure random passwords with customizable length and character sets. Uses crypto.getRandomValues.

Create beautiful linear and radial CSS gradients with a live preview and copy-ready code.

Generate a .gitignore file for any stack — Node, Python, Java, macOS, VSCode, and more. Pick multiple templates and combine.

Calculate monthly payment, total interest, and total cost of any fixed-rate loan — personal, auto, or mortgage — using standard amortization.

Estimate monthly mortgage payment including principal, interest, tax, and insurance.

Project investment growth with initial deposit, monthly contributions, and annual interest.

Estimate US take-home pay from gross salary — federal income tax, Social Security, Medicare, and optional state tax.

Calculate sales tax in both directions — add tax to a price or back it out of a total.

Convert between 30 major world currencies using daily ECB reference rates. Updated every business day.

Reduce image file size by adjusting JPEG/WebP quality. Runs 100% in your browser.

Resize images to any dimensions while preserving aspect ratio. Runs in your browser.

Convert images between PNG, JPG, and WebP formats entirely in your browser — no upload to a server required. Supports quality settings for lossy formats. Free.

Generate QR codes from any text or URL — download as PNG or SVG. Customize size and error correction.

Find the best bedtime or wake-up time. Based on 90-minute sleep cycles — wake between cycles to feel refreshed.

See how much caffeine remains in your system over time using the 5-hour half-life model. Enter dose and intake time to plan your last coffee before bed.

Estimate max heart rate using Fox (220-age), Tanaka (more accurate over 40), and Gulati (women-specific) formulas. Includes 5-zone training breakdown.

Plan your intermittent fasting schedule. Pick a protocol (16:8, 18:6, 20:4, or OMAD) and a first-meal time — see your eating window and last-meal cutoff.

Calories burned walking by speed, weight, and distance. Uses MET values (3.0 for casual 2.5 mph → 8.0 for 5 mph power walk) — the same method used in research.

Estimate ovulation date and the 6-day fertile window from your last period and average cycle length. Plus the predicted next-period date.

Test your typing speed and accuracy in 1 minute. Free WPM test with instant results.

Online dice roller for D&D and tabletop RPGs. Roll d4, d6, d8, d10, d12, d20, and d100 with secure randomness.

Random name picker — spin a wheel to choose from your list. Perfect for giveaways, decisions, and team selection.

Estimate Canadian federal + provincial income tax for 2025. All provinces and territories. Shows marginal and effective rates with a per-bracket breakdown.

Estimate 2025 RRSP and TFSA contribution room (Canada). Uses CRA 18% earned-income formula, the $7,000 TFSA limit, and cumulative TFSA carry-forward since 2009.

Run the OSFI B-20 mortgage stress test. See if you qualify at the higher of your contract rate + 2% or 5.25%, plus the maximum mortgage your income supports.

Estimate your 2025 Canadian take-home pay. Combines federal + provincial income tax, CPP/CPP2, and EI premiums for all 10 provinces and 3 territories.

Calculate whether to take CPP at 60, 65, or 70. See lifetime totals, breakeven ages, and which start date wins given your life expectancy.

Compare FHSA and RRSP Home Buyers' Plan for your first home down payment. See tax savings, repayment burden, and the optimal combined $100K strategy.

Estimate EI benefits you would receive if laid off in Canada. Calculate weekly EI amount, maximum weeks payable, and total potential benefit for 2026.

Compare up to 4 loans or mortgage rates side by side. See monthly payment, total interest, total cost, and effective APR for each lender in Canada.

Convert your pet's age to human years. Uses the size-adjusted dog formula (replacing the inaccurate 7x rule) and the standard cat formula. Free, no signup.

Calculate daily kcal for your dog or cat using the standard veterinary RER × MER formula. Adjusts for activity, life stage, neutering status, and weight goals.

Calculate board feet from lumber dimensions. Board foot = (thickness in × width in × length in) / 144. Add price per board foot for total cost.

Calculate carpet, hardwood, laminate, or tile flooring needed by room size. Includes 10% waste factor and converts to square yards plus optional total cost.

Calculate cubic yards of concrete for slabs, footings, or columns. Includes 60 lb and 80 lb bag counts plus 10% waste allowance.

Compare two JSON objects and see added, removed, and changed keys with full path. Works on nested structures and arrays — pure browser, nothing uploaded.

Strip extra whitespace from text — collapse runs of spaces, trim each line, remove blank lines, normalize line endings. Toggle each rule independently.

Sort lines naturally — file2 comes before file10. Numeric sequences inside strings are compared as numbers, not character-by-character.

Count words, characters, sentences, and paragraphs instantly as you type. Includes reading time estimate — free word counter for essays and articles.

Convert text to UPPERCASE, lowercase, Title Case, camelCase, PascalCase, snake_case, or kebab-case instantly. One-click copy — free online tool.

Generate Lorem Ipsum placeholder text for design mockups and wireframes. Choose 1 to 20 paragraphs of Latin-derived dummy text. Free, no signup.

Repeat any text multiple times with a custom separator (newline, comma, space, or none). Up to 1,000 repetitions — ideal for generating test data.

Calculate percentages, percentage change, and find what percent one number is of another.

Calculate the exact gap in days, weeks, months, and years between any two dates. Free online tool — great for deadlines, anniversaries, and planning.

Calculate your exact age in years, months, and days from your birthdate. Also shows hours, minutes, and days until your next birthday. Free, no signup required.

Calculate your Body Mass Index (BMI) with metric (cm/kg) or imperial (ft/lbs) units. See your WHO weight category instantly — free, no signup.

Convert colors between HEX, RGB, and HSL formats with a live preview swatch. Essential for web designers and developers — copy any format with one click.

Convert length, weight, and temperature units instantly. Supports metric and imperial — meters, feet, kg, lbs, Celsius, Fahrenheit, and more.

Convert numbers between decimal, binary, hexadecimal, and octal. Results update live as you type — essential for programmers and computer science students.

Convert numbers to Roman numerals and back. Supports 1 to 3,999,999 with vinculum notation.

Format, validate, and minify JSON in your browser. Pretty-print raw JSON with indentation, catch inline syntax errors, or collapse to one line.

Encode text to Base64 or decode Base64 back to plain text. Supports full UTF-8 including emoji. Runs in your browser — data never leaves your device.

Encode or decode URL components and query strings instantly. Converts special characters to percent-encoded format — essential for debugging web requests.

Generate SHA-1, SHA-256, and SHA-512 hashes from any text. Results update live as you type — runs via Web Crypto API, data stays in your browser.

Calculate monthly payment, total interest, and total cost of any fixed-rate loan — personal, auto, or mortgage — using standard amortization.

Estimate monthly mortgage payment including principal, interest, tax, and insurance.

Project investment growth with initial deposit, monthly contributions, and annual interest.

Find out how long it takes to reach a savings goal with regular monthly contributions.

Reduce image file size by adjusting JPEG/WebP quality. Runs 100% in your browser.

Resize images to any dimensions while preserving aspect ratio. Runs in your browser.

Convert images between PNG, JPG, and WebP formats entirely in your browser — no upload to a server required. Supports quality settings for lossy formats. Free.

Convert any image to a Base64 data URL for embedding in HTML img tags, CSS backgrounds, or JSON. Runs in your browser — image never leaves your device.

Calculate your daily calorie needs using the Mifflin-St Jeor equation for BMR and activity-adjusted TDEE.

Split your daily calories into protein, carbs, and fat based on your goal and preferred macro ratio.

Estimate your body fat percentage using the US Navy method — just a few tape measurements required.

Calculate your ideal body weight using the Devine, Robinson, Miller, and Hamwi formulas.

Convert a date and time between any two IANA timezones with DST handling built in.

Convert between Unix timestamps (seconds or milliseconds) and human-readable dates.

Count business days (Mon-Fri) between two dates, or add/subtract working days from a start date.

Live countdown to any future date — days, hours, minutes, and seconds updated in real time.

Test your typing speed and accuracy in 1 minute. Free WPM test with instant results.

Online dice roller for D&D and tabletop RPGs. Roll d4, d6, d8, d10, d12, d20, and d100 with secure randomness.

Random name picker — spin a wheel to choose from your list. Perfect for giveaways, decisions, and team selection.

Flip a virtual coin — heads or tails. Fair random outcome with flip history and statistics.

Scale recipe ingredient amounts up or down for any serving size. Paste ingredients, set original and target servings, get exact amounts.

Convert cooking measurements: cups, tablespoons, teaspoons, ml, grams, ounces. Ingredient-aware for flour, sugar, butter, and more.

Convert oven temperatures between Fahrenheit, Celsius, and UK Gas Mark. Includes a reference chart for common baking temps.

Safe internal temperatures for beef, pork, chicken, lamb, turkey, and fish. USDA safe minimums plus chef's doneness ranges in F and C.

Free online Pomodoro timer. 25/5 work/break cycles with long breaks every 4. Audio notification, session counter, customizable lengths.

Generate APA 7, MLA 9, and Chicago 17 citations for books, journal articles, and websites. Free, no signup, copy-ready output.

Check the reading grade level of any text. Computes Flesch Reading Ease, Flesch-Kincaid Grade, Gunning Fog, SMOG, and Coleman-Liau.

Convert SAT scores to equivalent ACT scores (and back) using the 2018 College Board / ACT concordance table.

Build Google Analytics UTM-tagged URLs. Compose source, medium, campaign, term, and content parameters with proper URL encoding.

Generate a complete set of HTML meta tags: title, description, canonical, Open Graph, Twitter Card, and robots. Copy the full <head> snippet.

Preview how your page title and meta description will appear in Google search results. Live pixel-width check + truncation warnings.

Analyze keyword frequency and density in your content. See top 1-, 2-, and 3-word phrases with counts and percentage of total words.

Convert your pet's age to human years. Uses the size-adjusted dog formula (replacing the inaccurate 7x rule) and the standard cat formula. Free, no signup.

Calculate daily kcal for your dog or cat using the standard veterinary RER × MER formula. Adjusts for activity, life stage, neutering status, and weight goals.

Generate a personalised core-vaccine schedule for puppies (DAPP / rabies) and kittens (FVRCP / rabies / FeLV) from date of birth or first vaccine.

Estimate your dog or cat's Body Condition Score (1-9 scale) and ideal weight. BCS-based weight assessment is more accurate than BMI for pets.

Calculate board feet from lumber dimensions. Board foot = (thickness in × width in × length in) / 144. Add price per board foot for total cost.

Calculate carpet, hardwood, laminate, or tile flooring needed by room size. Includes 10% waste factor and converts to square yards plus optional total cost.

Calculate cubic yards of concrete for slabs, footings, or columns. Includes 60 lb and 80 lb bag counts plus 10% waste allowance.

Calculate wallpaper rolls needed by wall size minus doors and windows. Includes 15% pattern-match waste and supports single-roll or double-roll formats.