Free Online Tools for Everyone
The all-in-one toolbox for your daily digital tasks. Powerful, private, and easy-to-use tools right in your browser.
Featured Tools
Base64 Encoder/Decoder
Free online Base64 encoder and decoder. Encode any text to Base64 or decode Base64 back to text. Supports Unicode and URL-safe format. Runs in your browser.
Open →JSON Formatter
Free online JSON formatter and validator. Beautify ugly JSON, validate syntax errors, minify JSON, and visualize JSON with interactive tree view.
Open →Tool Categories
ASCII Converter
Convert text to ASCII decimal codes or ASCII codes back to readable text instantly. Supports all printable characters. Free browser tool.
Open →Base64 Encoder/Decoder
Free online Base64 encoder and decoder. Encode any text to Base64 or decode Base64 back to text. Supports Unicode and URL-safe format. Runs in your browser.
Open →Binary to Decimal Converter
Convert binary numbers to decimal and decimal to binary instantly. Also shows hexadecimal and octal representations. Free browser-based tool.
Open →Binary to Octal Converter
Convert binary numbers to octal and octal to binary instantly. Also shows decimal and hexadecimal. Free browser-based tool.
Open →Binary Translator
Translate text to binary code or convert binary back to readable text. Each character is shown as an 8-bit binary number. Free browser tool.
Open →CSV to JSON Converter
Convert CSV data to JSON format instantly. Supports comma, tab, pipe delimiters, and headers as keys. Copy or download output. Free.
Open →Decimal to Binary Converter
Convert decimal numbers to binary and binary to decimal instantly. Also shows hexadecimal and octal. Free browser-based tool.
Open →Decimal to Hex Converter
Convert decimal numbers to hexadecimal and hex to decimal instantly. Also shows binary and octal. Free browser-based tool.
Open →Hex to Binary Converter
Convert hexadecimal numbers to binary and binary to hex instantly. Also shows decimal and octal. Free browser-based tool.
Open →Hex to Decimal Converter
Convert hexadecimal numbers to decimal and decimal to hex instantly. Also shows binary and octal. Free browser-based tool.
Open →Hex to Text Converter
Convert hexadecimal strings to readable text or encode text to hex. Supports space-separated and plain hex formats. Free browser tool.
Open →JSON Formatter
Free online JSON formatter and validator. Beautify ugly JSON, validate syntax errors, minify JSON, and visualize JSON with interactive tree view.
Open →JSON to CSV Converter
Convert JSON arrays to CSV format instantly. Extracts all keys as headers. Handles flat objects. Copy or download output. Free.
Open →Los Angeles Address Generator
Generate random Los Angeles addresses instantly. Get fake US addresses with name, street, ZIP, phone, and email for testing and development.
Open →MD5 Encrypt / Decrypt
Generate MD5 hashes instantly and look up MD5 decryption results online. Free, fast, and no registration required.
Open →Newline Escape Converter
Convert between real line breaks and escaped newline sequences. Toggle between Escape and Unescape modes. Perfect for JSON strings. Free.
Open →Password Generator
Generate strong, random passwords with custom length and character types. All generation happens in your browser — nothing is stored.
Open →Print Size Calculator
Convert pixels to print dimensions (inches, cm, mm) and back. Enter pixel size and DPI to calculate physical print size.
Open →PX to REM Converter
Convert pixels to REM units for responsive CSS. Set your base font size and get instant px/rem conversions. Free browser tool.
Open →Regex Tester
Test and debug regular expressions in real time. See match count, captured groups, and flags highlighted instantly. JavaScript regex syntax.
Open →REM to PX Converter
Convert REM units to pixels for CSS development. Set your root font size and instantly convert between rem and px. Free browser tool.
Open →RGBA to Hex Converter
Convert RGBA color values to hex code and hex to RGBA online. Includes live color preview. Free browser-based tool.
Open →Subnet Calculator
Calculate subnet details from any IP address and CIDR prefix. Get network address, broadcast, host range, and total hosts instantly.
Open →URL Encoder/Decoder
Free online URL encoder and decoder. Percent-encode special characters in URLs or decode them back. Supports Component and Full URL modes. Runs in your browser.
Open →UUID Generator
Generate RFC 4122 compliant UUIDs (v4 random, v1 time-based) instantly. Create 1–100 UUIDs at once for databases, APIs, and development.
Open →Age Calculator
Calculate your exact age in years, months, and days from your birth date. Also shows total days, weeks, and next birthday.
Open →Age Difference Calculator
Calculate the age difference between two people. Find out who is older and by how many years, months, and days.
Open →Birthday Calculator
Find out how many days until your next birthday. See your birthday on any day of the week and count down to the big day.
Open →Business Days Calculator
Calculate the number of business days (working days) between two dates. Excludes weekends automatically. Add or subtract business days from a date.
Open →Chronological Age Calculator
Calculate chronological age between any two dates in years, months, and days. Used in medical, educational, and psychological assessments.
Open →Countdown Calculator
Calculate the exact countdown to any future date or event. See days, hours, minutes, and seconds remaining. Also works for past dates.
Open →Day of the Week Calculator
Find the day of the week for any date instantly. Get the weekday name, ISO week number, day of year, and quarter for any date past or future.
Open →Day of the Year Calculator
Convert any date to its day of the year number (1–365/366), or convert a day number back to a calendar date. Works for both leap and non-leap years.
Open →EST to CST Converter
Convert EST to CST instantly. Real-time clock sync, bidirectional conversion, and automatic daylight saving time support. Free and no registration required.
Open →Half Birthday Calculator
Find your half birthday — the date exactly 6 months after your birthday. Great for kids born in summer or winter who want to celebrate at school.
Open →Hours Calculator
Add or subtract hours and minutes easily. Calculate time differences, total durations, or find a time after adding/subtracting a duration.
Open →Korean Age Calculator
Calculate your Korean age. In the Korean age system, everyone starts at age 1 at birth and gains a year every January 1st.
Open →Leap Year Calculator
Check if any year is a leap year. Find the next leap year, the previous one, and a list of upcoming leap years with dates.
Open →Military Time Converter
Convert military time (24-hour) to standard 12-hour AM/PM format and back. Includes a full military time reference chart for all hours.
Open →Overtime Pay Calculator
Calculate overtime pay based on your hourly rate and hours worked. Supports 1.5x and 2x overtime rates, with weekly total pay breakdown.
Open →Time Calculator
Add or subtract time with days, hours, minutes, and seconds. Find the result of any time arithmetic quickly.
Open →Time Duration Calculator
Calculate the exact duration between two times. Shows hours, minutes, and seconds with support for multi-day spans.
Open →Time to Decimal Calculator
Convert hours and minutes to decimal format and vice versa. Essential for timesheets, payroll, and billing calculations.
Open →Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa. Supports seconds and milliseconds. See UTC and local time instantly.
Open →Week Number Calculator
Find the ISO week number for any date instantly. Also shows the week start and end dates, day of the week, and how many days remain in the week.
Open →Weeks Between Dates Calculator
Calculate the exact number of weeks between any two dates. See full weeks, remaining days, total days, and working weeks. Great for planning.
Open →Work Hours Calculator
Calculate total work hours from clock-in and clock-out times. Supports lunch break deductions, multiple days, and weekly totals.
Open →A/B Test Calculator
Check if your A/B test results are statistically significant. Calculates p-value, Z-score, uplift, and statistical power. Free.
Open →A/B Test Sample Size Calculator
Calculate the sample size needed per variation for a statistically valid A/B test. Set confidence level, power, baseline rate and MDE. Free.
Open →ACOS Calculator
Calculate your Amazon ACOS, ROAS, and break-even ACOS instantly. Free tool for Amazon sellers to measure ad efficiency and profitability.
Open →Ad Revenue Calculator
Calculate your estimated ad revenue from pageviews or clicks. Free tool for bloggers and publishers using RPM or CPC models. No signup needed.
Open →Break-Even ROAS Calculator
Calculate break-even ROAS from gross margin, find required revenue, or max ad spend. Includes ROAS benchmarks by industry. Free.
Open →CAC Calculator
Calculate Customer Acquisition Cost, required budget, or expected new customers. Includes industry CAC benchmarks. Free.
Open →Capital Gains Tax Calculator
Calculate capital gains tax from investment profit. Enter purchase price, sale price, and your tax rate. US federal tables included. Free.
Open →Churn Rate Calculator
Calculate monthly churn rate, convert to annual churn, or find customers at risk. Includes industry churn benchmarks. Free.
Open →CLV Calculator
Calculate Customer Lifetime Value from order value, purchase frequency, and lifespan. Find CLV, revenue targets, or required customers.
Open →Conversion Rate Calculator
Calculate conversion rate, total conversions, or required visitors from any two known values. Includes industry CR benchmarks. Free.
Open →CPC Calculator
Calculate CPC, total ad spend, or expected clicks from any inputs. Includes Google Ads industry benchmarks to evaluate your performance. Free, no signup.
Open →CPL Calculator
Calculate CPL, total campaign budget, or expected leads from any inputs. Includes industry CPL benchmarks to evaluate your lead gen performance. Free.
Open →CPM Calculator
Calculate CPM, total ad budget, or expected impressions from any inputs. Includes platform CPM benchmarks to evaluate your campaign efficiency. Free.
Open →CTR Calculator
Calculate CTR, expected clicks, or required impressions from any inputs. Includes platform CTR benchmarks to evaluate your ad or content performance. Free.
Open →eCPM Calculator
Calculate eCPM, expected earnings, or required impressions from any inputs. Includes niche eCPM benchmarks to evaluate your monetization performance. Free.
Open →Email Marketing ROI Calculator
Calculate email marketing ROI, revenue per email, CPA, and conversion rate from your campaign data. Includes industry benchmarks. Free, no signup.
Open →Engagement Rate Calculator
Calculate engagement rate for Instagram, TikTok, YouTube, X, LinkedIn and Facebook. Find ER, required engagements, or needed followers. Free.
Open →Facebook Ads Calculator
Calculate Facebook Ads CPM, CPC, and CTR from your campaign data. Includes industry benchmarks for 8 verticals. Free, no signup required.
Open →Google Ads Calculator
Calculate Google Ads CPC, CTR, and ROAS from your campaign data. Includes industry benchmarks for 8 verticals. Free, no signup required.
Open →Instagram Ads Calculator
Calculate Instagram Ads CPM, CPC, and CTR from your campaign data. Includes industry benchmarks for 8 verticals. Free, no signup required.
Open →LinkedIn Ads Calculator
Calculate LinkedIn Ads CPC, CTR, and CPM from your campaign data. Includes B2B industry benchmarks for 8 verticals. Free, no signup required.
Open →LTV:CAC Ratio Calculator
Calculate your LTV to CAC ratio, find required LTV, or max affordable CAC. Includes health ratings and industry benchmarks. Free.
Open →Margin Calculator
Calculate gross profit margin, selling price, or cost from any two values. Includes industry margin benchmarks. Free.
Open →Marketing ROI Calculator
Calculate marketing ROI, required revenue, or required investment. Monthly and annual projections included. Free.
Open →Markup Calculator
Calculate markup percentage, selling price, or cost from any two values. Includes markup to margin conversion. Free.
Open →Social Media ROI Calculator
Calculate social media ROI, required revenue for a target ROI, or required investment. Includes industry benchmarks across 8 verticals. Free.
Open →TikTok Ads Calculator
Calculate TikTok Ads CPM, CPV, and CTR from your campaign data. Includes industry benchmarks for 8 verticals. Free, no signup required.
Open →YouTube Ads Calculator
Calculate YouTube Ads CPV, CPM, and View Rate from your campaign data. Includes industry benchmarks for 8 verticals. Free, no signup required.
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