KSUID Generator Generate KSUIDs (K-Sortable Unique Identifiers) or decode existing ones to extract their embedded timestamp and random payload. KSUIDs are 27-character Base62 strings that are lexicographically sortable by creation time, combining a 4-byte Unix timestamp with 16 bytes of random data. How to Use Set the count (1–10) to generate multiple KSUIDs at once, ...
Try the Tool »HTTP Request Header Builder Build HTTP request headers visually. Add common headers from a dropdown (Authorization, Content-Type, Accept, Cache-Control, etc.), configure authentication (Bearer token, Basic auth, API key), and add custom headers. The output is a ready-to-copy header block formatted for curl, fetch, or any HTTP client. How to Use Use the Add Common Header ...
Try the Tool »Permutation & Combination Calculator Calculate permutations (nPr) and combinations (nCr) with exact results using BigInt arithmetic — no overflow even for large numbers. Enter n and r to get both values simultaneously with step-by-step formula breakdowns. Includes a Pascal’s Triangle visualizer, multiset permutation calculator, and full enumeration of all arrangements for small sets. How to ...
Try the Tool »Circle & Ellipse Calculator Calculate all properties of circles and ellipses from any known measurement. In circle mode, enter any single value — radius, diameter, circumference, or area — and get all other measurements instantly, plus sector and segment calculations for any angle. In ellipse mode, enter the semi-major and semi-minor axes to get area, ...
Try the Tool »Discount & Markup Calculator Calculate markups, margins, discounts, and pricing in one versatile tool. Five calculation modes cover every common pricing scenario: markup from cost, profit margin analysis, discount from original price, reverse discount to find the original price, and stacked discounts for multiple sequential reductions. Includes a bulk pricing table, a clear margin vs ...
Try the Tool »Running Pace Calculator Calculate running pace, speed, distance, or time from any two known values. Enter your distance and finish time to get your pace per kilometer and mile, or set a target pace to find your expected finish time. Includes race distance presets from 5K to 100K ultra, a splits table with negative split ...
Try the Tool »Body Fat Percentage Calculator Estimate your body fat percentage using two established methods: the US Navy circumference method and the BMI-based formula. Enter your measurements in metric or imperial units, select your sex, and get your estimated body fat percentage, BMI, fat mass, lean mass, and fitness category. A visual spectrum bar shows where you ...
Try the Tool »Statistics Calculator Calculate comprehensive descriptive statistics for any dataset. Paste or type a list of numbers and instantly get mean, median, mode, standard deviation, variance, quartiles, skewness, kurtosis, and more. Includes a histogram visualization, frequency distribution table, five-number summary, and the option to toggle between population and sample calculations. Export your results as CSV. How ...
Try the Tool »Compression Ratio Calculator Calculate compression ratio, space savings percentage, and size reduction from original and compressed file sizes. Enter sizes in any unit (B, KB, MB, GB, TB) and instantly see the compression ratio, bits per byte, space saved, and effective throughput metrics. How to Use Enter the original file size and its unit, then ...
Try the Tool »Pressure Converter Convert between 12 pressure units instantly across SI, engineering, and weather/medical categories. Enter a value in Pascal, bar, atmosphere, psi, torr, or any other supported unit and see all equivalents update in real time. Includes quick-select buttons for common pressures like standard atmosphere, car tire pressure, and blood pressure readings, plus a reference ...
Try the Tool »Loan Affordability Calculator Find out exactly how much you can afford to borrow based on your income and existing debts. Enter your monthly gross income, current debt payments, desired interest rate, and loan term to get your maximum affordable loan amount, monthly payment, and debt-to-income ratios. Includes loan type presets for mortgages, personal loans, and ...
Try the Tool »Docker Container Resource Calculator Calculate optimal CPU and memory resource limits for Docker containers and Kubernetes pods based on your host capacity and workload type. Enter your available CPU cores and RAM, select a workload preset, and get ready-to-use Docker run flags, Kubernetes resource YAML, and Docker Compose snippets with copy buttons. Handles multi-container scenarios ...
Try the Tool »Audio File Size Calculator Calculate the exact file size of audio recordings based on format, bitrate, duration, and quality settings. Supports MP3, AAC, OGG Vorbis, WAV, and FLAC with configurable bitrate, sample rate, bit depth, and channel count. Includes a podcast hosting estimator for monthly storage and bandwidth, a quality comparison table showing all bitrates ...
Try the Tool »JSON Flattener & Unflattener Convert nested JSON structures to flat dot-notation key-value pairs, or reverse the process to rebuild nested objects from flat keys. This bidirectional tool handles deeply nested objects, arrays with index notation, custom delimiters, and configurable depth limits — all client-side in your browser. Perfect for working with NoSQL databases, environment variable ...
Try the Tool »Time Zone Converter Convert a date and time across multiple time zones simultaneously. Enter a source date, time, and time zone, then add as many target time zones as needed to see the converted times side by side. Supports 24-hour format toggle and all IANA time zones including DST-aware conversions. How to Use Set your ...
Try the Tool »CSS to JavaScript Style Object Converter Convert CSS declarations to JavaScript style objects instantly, or reverse the process to go from JS back to CSS. Supports five output formats including React inline styles, React Native StyleSheet, styled-components, Emotion, and plain JS objects. Handles vendor prefixes, CSS variables, numeric value detection, and full CSS rule blocks ...
Try the Tool »Torque Converter Convert torque values between 10 different units instantly. Enter a value in any unit and see all equivalents update simultaneously across SI, metric, and imperial groups. Covers Newton-meters, kilonewton-meters, kilogram-force meters, pound-force feet, and more. Includes a reference table of common torque specifications for automotive, bicycle, and industrial applications. How to Use Enter ...
Try the Tool »Angle Converter Convert angles between 7 different units instantly — degrees, radians, gradians, turns, arcminutes, arcseconds, and milliradians. All units update simultaneously as you type. Includes a visual unit circle diagram drawn on canvas, fractional π notation for radians, trigonometric values at the entered angle, and quick-select buttons for common angles. Perfect for math, physics, ...
Try the Tool »Data Storage Unit Converter Convert between data storage units instantly with both SI (decimal) and IEC (binary) systems displayed side by side. Enter a value in bits, bytes, kilobytes, megabytes, gigabytes, terabytes, or any other unit and see all equivalents update in real time. Correctly distinguishes between KB (1000 bytes) and KiB (1024 bytes) — ...
Try the Tool »Cooking Measurement Converter Convert between cooking measurements with ingredient-aware accuracy. Unlike generic unit converters, this tool knows that 1 cup of flour weighs differently than 1 cup of sugar. Select from 55+ common ingredients and convert between cups, tablespoons, teaspoons, fluid ounces, milliliters, grams, ounces, pounds, and more. Includes a recipe scaler, fraction display, oven ...
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Update: Our latest tool was added on Apr 23, 2026
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