Free Online Utility Tools

Count words, characters (with and without spaces), sentences, and paragraphs in real time. Paste any text and get instant stats. Free.

Convert text between UPPERCASE, lowercase, Title Case, snake_case, kebab-case, camelCase, and more.

Sort any list of lines alphabetically, by length, or in reverse order. Includes a case-sensitive toggle and options to sort A→Z, Z→A, shortest first, or longest first. Free.

Remove duplicate lines from any text or list instantly. Options to ignore case and trim whitespace before comparing. Keeps first occurrence by default. Free.

Paste CSV data and view it as a sortable, formatted table instantly in your browser.

Remove empty rows, empty columns, and trim extra whitespace from CSV data. Preview the cleaned result and copy to clipboard. Free.

Validate JSON instantly with line-level error reporting. Paste your JSON and see exactly where the syntax error is — plus root type, depth, and key count. Free.

Minify JSON by removing all whitespace. Shows bytes saved and compression percentage.

Compress JPEG, PNG, and WebP images in your browser — no upload required. Set your quality level, compare before/after sizes, and download the optimized file. Free.

Convert PNG images to JPG instantly in your browser. Set background color for transparent areas, adjust JPEG quality, and download. Nothing uploaded. Free.

Convert JPG or JPEG images to PNG format with full transparency support. Drag, drop, and download in seconds — runs entirely in your browser. Free.

Convert JPG, PNG, GIF, or HEIC to WebP — or WebP back to any format. Adjust quality, compare file sizes, all in your browser. Nothing uploaded. Free.

Generate a modular type scale from any base size and ratio. Choose from Perfect Fourth, Golden Ratio, and more — get px, rem, CSS variables or Tailwind config output. Free.

Convert font sizes between pt (print), px (screen), and rem. Set your root font size and see all three equivalents instantly. Includes a reference table of 17 common print sizes. Free.

Generate lighter tints and darker shades of any color. See the full scale from white to black with one-click copy of HEX, RGB, or HSL values for each swatch. Free.

Convert colors between HEX, RGB, RGBA, HSL, HSLA, and CSS named colors instantly. Paste any value or use the color picker — get every format at once. Free.

Verify a file's integrity by checking its hash against an expected checksum. Supports SHA-256, SHA-1, MD5, and more. Runs in your browser — nothing uploaded. Free.

Paste a JSON Web Token to decode and inspect its header, payload, and expiry — entirely in your browser.

Test regular expressions against a string with live match highlighting, flag toggles, and a match details table.

Generate SEO and social meta tags — standard, Open Graph, and Twitter/X Card — and copy the ready-to-paste HTML.

Instantly see your public IP address, country, region, city, ISP, and connection type. No app needed — your IP information loads automatically. Free.

See your exact screen resolution, browser viewport size, device pixel ratio, and orientation. Helpful for responsive design and CSS media query debugging. Free.

Convert a date and time between any two time zones. See the offset difference and local times side by side.

Convert a Unix timestamp to a human-readable date, or convert a date back to a Unix timestamp.

Calculate what percent of a number is, find a percentage change between two values, or determine what percent one number is of another. Three calculators in one. Free.

Simplify any ratio to its lowest terms, solve proportions, or find the missing value in A:B = C:X. Enter any three values to solve for the fourth. Free.

Calculate your exact age in years, months, and days from any date of birth. Also shows your next birthday and how many days until it. Free, instant results.

Count the exact number of days, weeks, and months until any future date. Great for countdowns, deadlines, and event planning. Updates in real time. Free.

Calculate your 2025 federal income tax by bracket. Enter gross income and filing status to see your taxable income, tax owed in each bracket, effective rate, and marginal rate. Free.

Calculate your take-home pay after federal income tax, state tax, Social Security, Medicare, 401(k), and health insurance deductions. Supports all pay frequencies. Free.

Compare the after-tax retirement value of a Roth IRA vs. a Traditional IRA based on your current and retirement tax rates, contribution amount, and years of growth. Free.

Calculate your monthly payment, total interest, and payoff timeline for any student loan. See how much an extra monthly payment saves in interest and time. Free.

Calculate your monthly burn rate, net burn, and cash runway in months. See when you'll run out of money and how much you need to raise to hit a target runway. Free.

Calculate the profit or loss on your ad campaigns. Enter spend, CPC, conversion rate, average order value, and gross margin to see ROAS, ROI, CAC, and break-even thresholds. Free.

Calculate your conversion rate from visitors and conversions, see total value and value per visitor, and model the revenue impact of improving your CVR by 10%, 25%, 50%, or 100%. Free.

Estimate your YouTube channel's monthly ad revenue from views, CPM rate, and ad impression rate. Model different monetization scenarios and compare outcomes. Free.

Calculate monthly and annual cash flow for any rental property. Enter rent, mortgage, taxes, insurance, vacancy, and repairs to see your true net cash flow. Free.

Calculate cap rate instantly. Enter rent, vacancy, expenses, and property value to get your NOI and capitalization rate — and compare investment properties. Free.

Calculate cash-on-cash return on any rental property. Enter your annual cash flow and total cash invested to instantly see your CoC return. Free.

Calculate the new monthly rent after a percentage or flat dollar increase, and see the annualized income change. Useful for landlords and property managers. Free.