ToolsYard

ToolsYard

A growing collection of free, fast, single-purpose tools that run entirely in your browser. Pick one below — no installs, no accounts, nothing you type ever leaves your device.

Age Calculator

Calculate exact age and days until your next birthday from a date of birth.

Base64 Encode/Decode

Encode text to Base64 or decode Base64 strings back to plain text.

BMI Calculator

Calculate your body mass index from height and weight, metric or imperial.

Code Minifier

Minify CSS, JavaScript, or HTML by stripping comments and unnecessary whitespace.

Color Converter

Convert colors between HEX, RGB, and HSL formats with a live preview.

Compound Interest Calculator

See how savings or investments grow over time with compound interest and contributions.

Cron Expression Explainer

Parse a cron expression and see in plain English when it runs.

CSS Gradient Generator

Build a linear or radial CSS gradient visually and copy the generated CSS code.

CSV ↔ JSON Converter

Convert CSV data to JSON, or a JSON array of objects back to CSV.

Currency Converter

Convert between world currencies using live, daily-updated exchange rates.

Days Between Dates

Count the days, weeks, and months between two dates, or add days to a date.

Discount Calculator

Calculate the sale price, amount saved, and final price after tax on a discount.

Hash Generator

Generate SHA-1, SHA-256, SHA-384, or SHA-512 hashes of text.

HTML Entity Encoder/Decoder

Encode text to HTML entities or decode HTML entities back to plain text.

IP Subnet Calculator

Calculate the network address, broadcast address, host range, and usable hosts for an IP and CIDR prefix.

JSON Diff Checker

Compare two JSON objects and see exactly which keys were added, removed, or changed.

JSON Formatter & Validator

Format, beautify, and validate JSON data with instant error detection.

JWT Decoder

Decode a JWT header and payload without verifying the signature.

Lorem Ipsum Generator

Generate placeholder Lorem Ipsum paragraphs, sentences, or words.

Markdown Previewer

Write Markdown and see the rendered HTML preview live, side by side.

Mortgage & Loan Calculator

Calculate your monthly mortgage or loan payment, total cost, and total interest.

Number Base Converter

Convert numbers between binary, octal, decimal, and hexadecimal live.

Password Generator

Generate strong, random passwords with customizable length and character sets.

Percentage Calculator

Calculate percentages, percentage change, and what percent one number is of another.

QR Code Generator

Turn any text or URL into a downloadable QR code.

Random Name Picker

Paste a list of names or options and randomly pick one — great for raffles or team assignments.

Random Number Generator

Generate a random number in a custom range, or roll virtual dice.

Regex Tester

Test a regular expression against sample text with live match highlighting.

Slug Generator

Turn any text into a clean, URL-friendly slug.

Text Case Converter

Convert text between UPPERCASE, lowercase, Title Case, and Sentence case.

Text Diff Checker

Compare two blocks of text and see exactly what changed, line by line.

Timezone Converter

Convert a time between your timezone and several others at a glance.

Tip Calculator

Calculate the tip, total bill, and per-person share when splitting the check.

Unit Converter

Convert length, weight, temperature, and volume between metric and imperial units.

Unix Timestamp Converter

Convert Unix timestamps to human-readable dates and back again.

URL Encode/Decode

Encode text for safe use in a URL or decode a percent-encoded URL string.

UUID Generator

Generate random version 4 UUIDs, one at a time or in bulk.

Word & Character Counter

Count words, characters, sentences, and paragraphs in your text instantly.

YAML ↔ JSON Converter

Convert YAML data to JSON, or a JSON document back to YAML.

What is ToolsYard

ToolsYard is a growing collection of free, single-purpose utilities for everyday text, data, and number tasks — a word counter, JSON formatter, password generator, unit converters, date calculators, and more. Every tool runs entirely as client-side code in your browser: nothing you type, paste, or upload is ever sent to a server, logged, or stored. There's no account to create and no software to install — open a tool, use it, and move on.

Who it's for

Developers reach for the Base64, JSON, hash, and JWT tools while debugging or building. Writers and students use the word counter, case converter, and Lorem Ipsum generator. Anyone paying a bill, planning a budget, or comparing loan offers can use the tip, discount, mortgage, or compound interest calculators. The date and timezone tools help with scheduling across time zones or counting days between events. Each tool is built to answer one specific question quickly, without ads or clutter getting in the way of the result.

How tools are organized

Use the search box above or the navigation drawer to jump straight to a tool by name. Tool pages also link to related tools at the bottom — for example, the Base64 encoder links to URL encoding and hash generation, and the mortgage calculator links to the compound interest and discount calculators — so it's easy to find the next tool for a related task without going back to search.