The Modern Suite for
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Add or subtract days from any date to calculate future or past dates. Perfect for deadlines, planning, and date arithmetic.

Calculate your exact age in years, months, and days.

Online countdown timer with alarm and visual progress.

Calculate the exact number of days, weeks, months, and years between two dates.

Count down to any event, deadline, or special occasion. Real-time countdown with weeks, days, hours breakdown.

A precise digital stopwatch with lap timing. Measures accurate time down to milliseconds.

Stay focused and productive with the Pomodoro Technique. Work in 25-minute sprints followed by short breaks.

Calculate the exact hours, minutes, and seconds between two dates and times. Perfect for measuring durations and elapsed time.

Convert times between different time zones instantly. Perfect for scheduling international meetings and coordinating across continents.

Convert between Unix timestamps and human-readable dates instantly. Epoch time converter with multiple format outputs.

Convert between degrees, radians, gradians, and more angle units.

Convert between square meters, square feet, acres, hectares, and more area units instantly. Free online area calculator.

Convert CSV data to JSON format instantly with custom delimiters and parsing options.

Convert between Mbps, Gbps, MB/s, and more data transfer units.

Convert between joules, calories, kWh, BTU, and more energy units.

Convert Excel spreadsheets (.xlsx, .xls) to CSV format instantly. Free, secure, and works offline with sheet selection support.

Convert between bytes, KB, MB, GB, TB, and binary units (KiB, MiB, GiB).

Convert between Hz, kHz, MHz, GHz, and RPM frequency units.

Convert between MPG, L/100km, and km/L fuel economy units.

Convert iPhone HEIC photos to JPG format instantly. Free online converter with adjustable quality. 100% private - all conversions happen in your browser.

Compress images to reduce file size while maintaining quality. Free online image compressor for JPG, PNG, and WEBP. Fast, private, and no upload required.

Resize images instantly in your browser. Adjust dimensions, scale by percentage, or use presets. No upload required - 100% private and free.

Convert JPG and JPEG images to PDF format instantly with custom page sizes.

Convert JPG and JPEG images to PNG format instantly. Free online converter with no file size limits. 100% private - all conversions happen in your browser.

Convert JPG photos to WebP format. Reduce file sizes by up to 50% while maintaining excellent quality.

Convert JSON data to CSV format instantly with custom delimiters and headers.

Convert between metric and imperial length units instantly. Meters, feet, inches, kilometers, miles, centimeters, and more.

Compress PDF files to reduce size while maintaining quality. Free online PDF compressor with high quality, balanced, and maximum compression options.

Merge multiple PDF files into one document instantly. Free online PDF merger with unlimited files. 100% private.

Split PDF files by page ranges, extract specific pages, or divide into individual files. Free online PDF splitter. 100% private.

Convert PNG images to JPG format instantly. Reduce file size, adjust quality, and ensure universal compatibility. 100% private - all conversions happen in your browser.

Convert PNG images to PDF format instantly with transparency support and custom page sizes.

Convert PNG images to WebP format for superior compression. Reduce file sizes by 25-35% while maintaining quality. Free, fast, and 100% private.

Convert between watts, kilowatts, horsepower, and BTU/h.

Convert between PSI, bar, pascals, atmospheres, and more pressure units.

Convert between Arabic numbers and Roman numerals (I, V, X, L, C, D, M).

Convert between km/h, mph, m/s, knots, and more speed units instantly. Free online speed calculator.

Convert SVG files to PNG images with custom dimensions. Set width, height, scale, and maintain aspect ratio. 100% client-side.

Convert between Celsius (°C), Fahrenheit (°F), and Kelvin (K) instantly.

Convert between seconds, minutes, hours, days, weeks, and more time units.

Convert between liters, gallons, cups, milliliters, and more volume units instantly. Free online volume calculator for cooking and science.

Convert WebP images to JPG format with adjustable quality. Free online converter for photos and graphics. 100% private - all conversions happen in your browser.

Convert WebP images to PNG format instantly. Free online converter with lossless quality. 100% private - all conversions happen in your browser.

Convert between kg, lbs, g, and oz instantly with bidirectional inputs.

Calculate the mean, median, mode, range, sum, and count of any list of numbers instantly.

Add, subtract, multiply, and divide fractions with step-by-step simplified results, mixed numbers, and decimals.

Calculate percentages of numbers, percentage changes, and reverse percentages instantly.

Free tip calculator with bill splitter. Calculate restaurant tips, gratuity percentages, and split bills between friends.

Visualize how your money grows over time with compound interest. Charts, monthly contributions, and total return estimates.

Calculate monthly loan payments, total interest, and a full amortization schedule for any loan amount, rate, and term.

Find out how long it takes to reach a savings goal, or how much to save each month, with interest. Includes a growth chart.

Calculate simple interest and total amount from principal, annual rate, and time. See the difference vs compound interest.

Calculate your Body Mass Index (BMI) online. Supports Metric (kg/cm) and Imperial (lbs/ft) units.

Calculate your Basal Metabolic Rate (BMR) — the calories your body burns at rest — using the Mifflin-St Jeor and Harris-Benedict equations.

Calculate your daily calorie needs (TDEE) and BMR based on age, sex, height, weight, and activity level. Get targets for losing, maintaining, or gaining weight.

Convert text between uppercase, lowercase, Title Case, camelCase, snake_case and more instantly.

Convert Markdown syntax to clean HTML code with real-time preview.

Compare two texts side-by-side with word-level diff highlighting. Spot every insertion, deletion and modification instantly. Merge changes with accept/reject controls.

Free online word counter and character counter. Check reading time, sentence count, and paragraphs instantly.

Convert numbers between Binary, Octal, Decimal, and Hexadecimal.

Encode and decode Base64 strings instantly. Perfect for API authentication, data URIs, and email attachments.

View images from Base64 strings instantly. Paste any Base64 or data URI to preview, inspect metadata, and download. Also encodes images to Base64.

Pick colors and convert between HEX, RGB, and HSL formats instantly. Visual color picker for designers and developers.

Generate cryptographic hashes instantly. Supports MD5, SHA-1, SHA-256, and SHA-512 for data integrity and verification.

Format, validate, and minify JSON data instantly. Perfect for API responses, config files, and debugging.

Test and debug regular expressions online. Live highlighting, match details, capture groups, and all regex flags supported.

Encode and decode URLs and query strings. Convert special characters to percent-encoded format for safe web transmission.

Generate random UUIDs (v4) instantly. Create unique identifiers for databases, APIs, and distributed systems.

Generate professional barcodes instantly. Support for CODE128, EAN-13, UPC-A, and more. Free online barcode maker.

Generate placeholder text for your designs and mockups.

Generate strong, random passwords instantly. Customize length and characters for maximum security.

Generate QR codes from text, URLs, or any data. Download as PNG with adjustable size.