Free Online Tools

25 unit converters · 12 calculators · 10 generators · 7 text tools · 5 business tools · 7 icon libraries · no signup needed

Common Converters

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Length Converter Convert meters, feet, inches, miles, km and more. 12 units · 132 conversions Temperature Converter Convert Celsius, Fahrenheit, Kelvin and Rankine. 4 units · 12 conversions Area Converter Convert square meters, acres, hectares, sq feet and more. 10 units · 90 conversions Volume Converter Convert liters, gallons, cups, pints, fl oz and more. 12 units · 132 conversions Weight Converter Convert kg, lbs, ounces, stone, grams and more. 11 units · 110 conversions Time Converter Convert seconds, minutes, hours, days, weeks, years and more. 12 units · 132 conversions

More Unit Converters

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Science & Engineering Pressure, Energy, Power, Force & more 6 converters Mechanics Fuel Economy, Acceleration, Density, Torque 4 converters Electrical & Optics Frequency, Electric Current, Electric Resistance, Electric Potential & more 5 converters Data & Numbers Data Storage, Numbers, Image Resolution 3 converters Cooking & Dry Measure Volume (Dry) 1 converters

Generators

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Password Generator Generate strong, random passwords with custom length and character sets. Lorem Ipsum Generator Generate placeholder Lorem Ipsum text — paragraphs, sentences, or words. UUID Generator Generate RFC 4122 version 4 UUIDs instantly in bulk. QR Code Generator Generate QR codes for URLs, text, or contact info. Download as PNG. Color Palette Generator Generate tints, shades, and harmonious color palettes from any base color. Hash Generator Generate SHA-256, SHA-512, SHA-1, and MD5 hashes from any text. IP Address Generator Generate random IPv4 and IPv6 addresses in bulk. Word Combination Generator Combine word lists to generate all possible pairings and compound words. Word Scrambler Scramble words and sentences randomly. Useful for puzzles and games. Random Number Generator Generate random integers or decimals within a range, with uniform or normal (Gaussian) distribution, and optional unique values.

Icon Libraries

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Feather Icons 287 simply beautiful open-source SVG icons. 287 icons · MIT Lucide Icons 1,000+ consistent, community-maintained SVG icons. 1,000+ icons · ISC Bootstrap Icons 2,000+ high-quality open source icons for Bootstrap and beyond. 2,000+ icons · MIT Tabler Icons 5,700+ free and open-source pixel-perfect icons. 5,700+ icons · MIT Remix Icons 2,800+ neutral-style icons with line and fill variants. 2,800+ icons · Apache 2.0 Font Awesome Free 2,000+ free icons across solid, regular, and brand styles. 2,000+ icons · CC BY 4.0 (icons) / SIL OFL (fonts) / MIT (code) Material Symbols 3,000+ icons with adjustable weight, fill, grade, and size axes. 3,000+ icons · Apache 2.0

Text Tools

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Word Counter Count words, characters, sentences, paragraphs and estimate reading time instantly. Case Converter Convert text between lowercase, UPPERCASE, Title Case, camelCase, snake_case, kebab-case and more. Base64 Encode / Decode Encode text or files to Base64 and decode Base64 strings back to plain text instantly. URL Encode / Decode Percent-encode special characters in URLs or query strings, and decode them back instantly. Remove Duplicate Lines Paste a list and instantly remove all duplicate lines, keeping only unique entries. Sort Lines Sort lines alphabetically, by length, numerically, in reverse, or shuffle randomly. Text Diff Compare two texts side by side and highlight the differences line by line.

Business Tools

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Invoice Generator Create professional invoices with India GST (CGST/SGST/IGST) or generic international billing — download as PDF or print. Quotation / Estimate Generator Create professional price quotations and estimates with India GST or generic international format — download as PDF or print. Salary Slip / Payslip Generator Create professional salary slips / payslips with earnings, deductions, and net pay calculation — download as PDF or print. Offer Letter / Appointment Letter Generator Create professional offer letters and appointment letters with company letterhead — download as PDF or print. Experience / Relieving Letter Generator Create professional experience letters and relieving letters with company letterhead — download as PDF or print.

Calculators

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Percentage Calculator Calculate percentages, find what % one number is of another, and compute % change. Discount Calculator Calculate sale price, amount saved, and original price from any discount. Age Calculator Find your exact age in years, months, and days. See your next birthday countdown. Date Difference Calculator Find the exact number of days, weeks, months, and years between two dates. EMI Calculator Calculate monthly EMI, total interest, and full repayment schedule for any loan. Compound Interest Calculator Calculate compound interest growth with yearly breakdown and multiple compounding frequencies. GST Calculator Add or remove GST from any amount, with CGST/SGST and IGST breakdown for India GST rates. Date Calculator Count down to a date, calculate business days excluding weekends and holidays, or find the week number of any date. Date & Time Converter Convert Unix timestamps to human-readable dates, format dates as ISO 8601, or convert times between time zones. Aspect Ratio Calculator Calculate the missing width or height to match an aspect ratio, simplify a ratio from pixel dimensions, or look up common screen resolutions. Number to Words Converter Convert numbers into words using Indian (lakh, crore) or International (million, billion) numbering systems, or convert to and from Roman numerals. Statistics Calculator Calculate mean, median, mode, range, variance, and standard deviation from a list of numbers.

Popular Conversions

Kilometers to Miles km → mi Miles to Kilometers mi → km Celsius to Fahrenheit °C → °F Fahrenheit to Celsius °F → °C Square Meters to Square Feet m² → ft² Square Feet to Square Meters ft² → m² Liters to Gallons (US) L → gal Gallons (US) to Liters gal → L Kilograms to Pounds kg → lb Pounds to Kilograms lb → kg Hours to Minutes hr → min Minutes to Seconds min → s Bars to PSI bar → psi PSI to Bars psi → bar Kilocalories to Kilojoules kcal → kJ Kilojoules to Kilocalories kJ → kcal Kilowatts to Horsepower kW → hp Horsepower to Kilowatts hp → kW