The right tool, in the right place.

Use Base64, URL, JWT decoding, and hashing tools from one workspace.

Compare two texts line by line and inspect the reported differences.

Convert Unix timestamps to readable dates and local date-time input back to timestamps.

Convert supported integers between binary, decimal, octal, and hexadecimal.

Build and inspect five-field cron expressions with the supported controls.

Decode the header and payload of a JSON Web Token without verifying its signature.

Encode text to Base64 or decode Base64 back to text.

Encode or decode URL components in your browser.

Format, minify, and validate JSON with syntax highlighting.

Generate SHA-1, SHA-256, SHA-384 and SHA-512 digests in your browser.

Generate identifiers in UUID version 4 format for your applications.

Generate passwords locally with the options provided by the tool.

Convert text into a URL-friendly slug.

Look up the network prefix and announcing autonomous systems for a public IP address.

Test JavaScript regular expressions with match highlighting and capture groups.

Use a color converter, palette generator, and CSS gradient builder in one workspace.

Reduce image file size with adjustable browser-based compression.

Convert colors between HEX, RGB, and HSL formats.

Build custom CSS gradients and copy the generated declaration.

Generate and adjust color palettes for design exploration.

Resize images to custom dimensions in your browser.

Count words and characters, change text case, and generate placeholder text.

Preview supported Markdown syntax in real time.

Count characters in text and compare the result with an optional limit.

Count words and characters in text.

Convert text between uppercase, lowercase, camelCase, and other case styles.

Generate placeholder text for mockups and layouts.

Use percentage, discount, tip, and VAT calculators from one workspace.

Explore supported valuation, dividend, and portfolio calculations from your inputs.

Explore supported property, rent, yield, borrowing, and fee estimates.

Estimate dividend yield and income from the values you provide.

Calculate a tip and split a total between people.

Calculate percentages, percentage changes, and related values.

Estimate loan payments from principal, rate, and term inputs.

Calculate a price after a percentage discount.

Calculate net, VAT, and gross amounts from a rate you provide.

Convert currencies using the exchange rates and update date displayed by the tool.

Explore a demonstration quote interface; values are not live market data.

Explore savings growth from your contribution and return assumptions.

Explore compound-growth projections from your assumptions.

Calculate an age in years, months, and days from a date of birth.

Calculate the interval between two dates with the available calendar options.

Calculate the number of days between two calendar dates.

Find your generation and explore the events, objects and cultural references of its era.

Generate a QR code from text or a URL in your browser.

Read text aloud with voices made available by your browser and operating system.

Calculate ages and intervals between two dates.

Calculate work duration and an estimated wage from the values you provide.

Run configurable focus and break intervals using the Pomodoro technique.

Measure tempo by tapping, microphone onset detection, or local audio analysis.

Use dice, coin, wheel, picker, and number tools for casual random choices.

Generate pseudo-random numbers for casual, non-cryptographic use.

Generate names from the built-in datasets for creative projects.

Roll virtual dice for games and casual, non-cryptographic use.

Flip a virtual coin for casual, non-cryptographic choices.

Spin a customizable wheel for casual, non-cryptographic choices.

Pick an item pseudo-randomly from a list.

Explore supported thin-lens, spherical-mirror, and refraction calculations.

Calculate fall time, distance, or final speed in a drag-free gravity model.

Calculate concentration and volume relationships with C1V1 = C2V2.

Calculate force, mass, or acceleration with F = ma.

Calculate voltage, current, resistance, and electrical power for an ohmic load.

Calculate molar mass for chemical formulas supported by the built-in element set.

Calculate simple probabilities, binomial results, combinations, and permutations.

Calculate mean, median, variance, standard deviation, quartiles, and percentiles.

Add, multiply, transpose, invert, and calculate determinants for supported matrices.

Convert values between joules, calories, kilowatt-hours, electronvolts, BTU, and more.

Convert supported integers between binary, octal, decimal, and hexadecimal.

Review stoichiometric coefficients for the common reactions currently supported.

Search and inspect the curated subset of chemical elements currently available.

Solve supported linear, quadratic, and two-variable systems with intermediate steps.

Calculate supported gear ratios, tooth counts, module, and center distance.

Estimate material quantities for supported concrete and mortar mixes.

Estimate stress and deflection for supported wood and steel beam cases.

Explore impedance and resonance in supported ideal RC, RL, and RLC circuits.

Decode resistor color codes for four- or five-band resistors.

Estimate normal, shear, and bending stress for supported simplified sections.

Explore flow speed and pressure-loss estimates with stated hydraulic models.

Estimate filament length, mass, cost, and print time from the supplied dimensions.

Estimate a series resistor and its power dissipation for a simple LED circuit.

Estimate stiffness and natural frequency for supported spring models.

Estimate dimensional compensation from a measured or selected shrinkage rate.

Explore dimensions and deviations for the currently supported fit cases.

Convert values between the measurement units supported by the tool.

Convert the available units of length, mass, area, volume, speed, pressure, and angle.