Free Online Generators

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes for text or files online for free. Verify file integrity with checksums. No signup.

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Create QR codes online for free. Generate QR codes for URLs, text, Wi-Fi networks, and more. Download as PNG or SVG. No signup.

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Generate strong, random passwords online for free. Customize length, symbols, numbers, and character sets. Cryptographically secure. No signup.

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Generate random UUIDs (v4) online for free. Bulk generation, multiple formats: standard, no-dashes, uppercase. No signup.

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Generate random numbers online for free. Dice roller, coin flip, lottery number picker. Cryptographically secure. No signup.

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Generate barcodes online for free. Code 128, EAN-13, EAN-8, UPC-A, Code 39, ITF-14, and more. Download as PNG or SVG. No signup.

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Create professional PDF invoices online for free. Add your business details, line items, and tax. Download instantly. No signup, no watermark.

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Calculate percentages instantly online for free. What is X% of Y? What percentage is X of Y? Calculate percent increase, decrease, and discounts.

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Calculate your BMI (Body Mass Index) from height and weight online for free. Metric and imperial. See your BMI category and healthy weight range.

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Test your typing speed and accuracy online for free. See your WPM (words per minute), accuracy, and characters per minute. Multiple modes and durations.

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Stay focused with the Pomodoro technique online for free. 25-minute work sessions with short and long breaks. Tracks rounds and total focus time. No signup.

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Create a countdown to any date and time online for free. See days, hours, minutes, and seconds remaining. Perfect for events, deadlines, and holidays.

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Generate a free privacy policy for your website or app. GDPR and CCPA compliant templates. Fill in your details, copy or download as HTML/text.

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Create professional receipts online for free. Add items, tax, payment method — download as PDF. Perfect for freelancers and small businesses.

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Build a professional resume or CV online for free. Fill in your details, choose a template, and download as PDF. No signup, no watermark.

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Calculate monthly loan or mortgage payments online for free. Enter amount, interest rate, and term — see payment schedule, total interest, and amortization table.

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Calculate tip amount and split the bill online for free. Enter bill total, tip percentage, and number of people. Quick and easy.

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Calculate sale prices and discounts online for free. Enter original price and discount percentage — see how much you save instantly.

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Calculate your GPA online for free. Add courses with grades and credits — see your cumulative GPA on a 4.0 scale instantly.

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Convert between hourly, weekly, monthly, and annual salary online for free. Factor in hours per week and weeks per year.

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Free online stopwatch with lap times, split tracking, and millisecond precision. No download, runs in your browser.

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Set an alarm or countdown timer online for free. Choose hours and minutes, get notified with sound when time is up. No signup.

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Convert numbers to Roman numerals and Roman numerals to numbers online for free. Supports values from 1 to 3,999,999.

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Convert inches to centimeters and cm to inches online for free. Quick, accurate conversion with a reference table.

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Convert Fahrenheit to Celsius and Celsius to Fahrenheit online for free. Instant conversion with formula and reference table.

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Calculate compound interest online for free. Enter principal, rate, time, and compounding frequency to see future value, total interest, and a year-by-year growth table.

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Free online scientific calculator with trigonometry, logarithms, exponents, roots, factorials, and more. Works in your browser, no download needed.

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Calculate fractions online for free. Add, subtract, multiply, and divide fractions and mixed numbers. Shows step-by-step simplification.

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Calculate electricity costs online for free. Enter wattage, hours of use, and electricity rate to estimate daily, monthly, and yearly energy costs.

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Calculate fuel costs for any trip online for free. Enter distance, fuel efficiency, and gas price to estimate total fuel cost. Supports miles/km and MPG/L per 100km.

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Calculate the number of days, weeks, months, and years between two dates online for free. Find out exactly how long between any two dates.

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Convert time between time zones online for free. See the current time in any city or time zone. Compare multiple zones side by side.

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Calculate possible blood types for a child based on parents' blood types online for free. See ABO and Rh factor inheritance with Punnett square breakdown.

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Convert any date to Roman numerals online for free. Perfect for tattoos, invitations, and engravings. Shows day, month, and year in Roman numeral format.

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Generate a QR code for your WiFi network online for free. Enter SSID and password, download or print the QR code for guests to scan and connect instantly.

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Play white noise, pink noise, and brown noise online for free. Focus, study, sleep, or relax with ambient sound. Adjustable volume, no download needed.

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Track your daily habits online for free. Add habits, check them off each day, and see your streaks. Data stored locally in your browser — no signup needed.

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Create printable checklists online for free. Add items, reorder with drag and drop, and download or print your checklist. Perfect for to-do lists and packing lists.

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