All Tools

HandTools provides fast, free online tools for finance, development, text, and networking tasks.

Compound Interest Calculator

Calculate the growth of your investment over time.

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Currency Converter

Convert amounts between 150+ currencies with live rates.

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Tax Calculator

Quickly estimate your income tax and net take-home pay.

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Loan Calculator

Compute monthly payments and total cost for a loan.

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BMI Calculator

Body mass index based on height and weight.

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Unit Converter

Convert between length, weight, and temperature.

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Budget Tracker

Add expenses and view total.

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Cost of Living Calculator

Compare monthly expenses and estimate how much remains after essential spending.

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Passive Income Simulator

Estimate how much capital is needed to generate a desired monthly income.

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Loan Comparison

Compare credit offers by installment, total paid, and real cost.

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Effective Annual Rate Calculator

Convert nominal rates into an annual basis that is easier to compare.

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Savings Goal Planner

Find how much you need to save each month to reach a specific target.

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Monthly Contribution Simulator

Calculate how much you need to invest each month to reach a future value.

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Present and Future Value Calculator

Compare monetary values across time using compound interest.

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Retirement Planner

Project accumulated wealth by retirement and see whether the target is on track.

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Debt Payoff Calculator

Estimate the time needed to pay off debt.

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Credit Card Comparison

Analyze annual fee, interest, cashback, and the real cost of each card.

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Contribution Margin Calculator

Find how much remains after variable costs and before fixed costs.

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Early Payment Discount Simulator

Calculate the net amount and benefit of paying before the due date.

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Average Balance Calculator

Calculate the weighted average balance over a period.

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Monthly Cash Flow

Track income and expenses and see the final monthly balance.

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Opportunity Cost Calculator

Compare investing, spending, or saving to assess the real financial impact of each decision.

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CPF/CNPJ Generator

Generate valid CPF or CNPJ numbers for testing purposes.

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JSON Formatter

Clean, prettify, and validate your JSON strings with options.

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SHA-256 Hasher

Compute the SHA-256 hash of any input instantly.

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Password Generator

Create secure random passwords.

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Password Strength Checker

Analyze a password and get a strength score with recommendations.

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Image Compressor

Compress photos in the browser and download a smaller file.

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Base64 Encoder

Encode or decode data to and from Base64.

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HTML Entity Decoder

Convert HTML entities back to readable characters.

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URL Encoder/Decoder

Encode or decode URL components.

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Color Converter

Convert between HEX and RGB colors.

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MD5 Hash

Compute MD5 hash of input text.

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HTML Minifier

Remove whitespace and comments from HTML.

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XML Formatter

Beautify XML content.

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JWT Decoder

Decode JSON Web Tokens.

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SHA1 Hash

Compute SHA1 hash of input text.

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Slug Generator

Create URL-friendly slugs from text.

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UUID Generator

Generate random UUIDs.

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CRC32 Hash

Calculate CRC32 checksum.

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Base32 Encoder

Encode text to Base32 format.

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Timestamp Converter

Convert Unix timestamps to dates and back.

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Step Watch

Track time in intervals and log laps with ease.

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QR Code Generator

Create a QR code from text.

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IP Validator

Validate IPv4 addresses.

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IPv4 Conversion

Convert IPv4 to integer and back.

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CIDR Calculator

Calculate network, broadcast, mask and hosts from a CIDR.

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Web Diagnostics (Query & Lookup)

DNS, WHOIS, OUI and Reverse DNS utilities for quick diagnostics.

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Network Cable Wiring Standards

Check wire order and compare T568A and T568B standards when crimping Ethernet cables.

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Cable & Rack Label Generator

Generate printable labels for patch panels, switches and cables.

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Cable Budget Calculator

Estimate how many 305 m cable drums you need based on average run length and point count.

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IPv6 Validator

Validate, expand, normalize, and classify IPv6 addresses.

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IPv6 CIDR Calculator

Calculate the prefix, host bits, and size of an IPv6 network.

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Special IP Classifier

Identify private, reserved, multicast, link-local, and documentation ranges.

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DNS Propagation Checker

Compare DNS answers from public resolvers to observe cache and propagation differences.

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DNSSEC Analyzer

Query DS, DNSKEY, and RRSIG records and inspect DNSSEC validation signals.

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HTTP Headers Analyzer

Inspect status, final URL, and headers exposed by an HTTP endpoint.

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Port and Service Lookup

Look up a port, protocol, IANA range, and commonly associated service.

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Merge PDFs

Combine multiple files into one PDF.

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Split PDF

Separate pages or page ranges from a PDF.

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Reorder pages

Set the final order by entering page numbers.

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Rotate pages

Rotate every page by 90, 180 or 270 degrees.

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Add page numbers

Add sequential numbers to the bottom-right corner.

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Image to PDF

Convert one JPG or PNG image into a PDF.

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PDF to JPG

Export each PDF page as a JPG image.

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Add watermark

Apply a text watermark to every page.

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Random String

Generate a random alphanumeric string.

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CSS Minifier

Compress CSS by stripping comments and spaces.

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JS Beautifier

Format JavaScript code for readability.

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Regex Tester

Test regular expressions against input text.

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OpenAPI Validator

Validate and inspect OpenAPI API descriptions.

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JSONPath Tester

Query JSON structures using JSONPath expressions.

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YAML Formatter

Validate and convert YAML and JSON in the browser.

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NDJSON Validator

Validate and convert JSON Lines one line at a time.

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cURL Builder

Build HTTP requests and generate cURL or Fetch commands.

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HTTP Status Explorer

Look up the meaning and use of HTTP response codes.

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HTTP Headers Analyzer

Organize and understand common request and response headers.

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CORS Generator

Build a CORS configuration including preflight and credentials.

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CSP Builder

Create a Content Security Policy for your application.

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MIME Type Lookup

Find the MIME type associated with a file extension.

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Hexadecimal Encoder

Convert text between hexadecimal and readable characters.

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HMAC Generator

Calculate HMAC signatures for integrations and webhooks.

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Web Performance Metrics

Interpret loading metrics and create a performance budget.

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WebDriver Capabilities Builder

Build JSON capabilities for browser automation sessions.

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Word Counter

Count words, characters, and sentences in real time.

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Case Converter

Convert text between uppercase, lowercase, CamelCase, and more.

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Lorem Ipsum

Generate placeholder text for design and layout.

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Palindrome Checker

Check if text reads the same forwards and backwards.

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ROT13 Encoder

Encode or decode text using ROT13.

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Pig Latin

Convert English text to Pig Latin.

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Markdown to HTML

Render Markdown into HTML.

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HTML to Markdown

Strip HTML tags and convert to Markdown.

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Character Frequency

Count how often each character appears.

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Strip HTML

Remove all HTML tags from text.

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Word Frequency

Count the frequency of each word.

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Morse Code

Convert between text and Morse code.

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Link Extractor

Find URLs within a block of text.

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Hashtag Extractor

Pull hashtags out of text.

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Emoji Remover

Strip emojis from text.

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Text Diff

Show differences between two texts.

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Grapheme Cluster Counter

Count user-perceived characters, including emoji and combining marks.

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Unicode Inspector

Inspect Unicode code points, categories, and representations in text.

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Unicode Normalizer

Compare and normalize text using NFC, NFD, NFKC, and NFKD.

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Text Segmenter

Split text into words, sentences, and user-perceived characters.

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Locale-aware Sorter

Compare and sort lists according to language, accents, and case.

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Markdown Table Generator

Convert comma-, tab-, or pipe-separated data into Markdown tables.

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Markdown TOC Generator

Extract headings and create a navigable table of contents.

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