Business
Invoice Generator
Create a clean, printable invoice in your browser, calculate tax and totals, and save the finished invoice as a PDF without creating an account.
Open toolTools
Browse free browser-based calculators, generators, converters, and web utilities for business, finance, development, marketing, text, and everyday tasks. Each tool is designed to solve a focused problem quickly, with plain-language explanations when the formula, format, or limitation matters.
Choose a category to narrow the list, or open a tool directly. If you want to understand the reasoning behind a result, the Guides library includes worked examples, technical explanations, and practical checklists that connect back to the tools.
Web
SPF Record Builder
Build a basic SPF TXT record from authorized IP addresses, include domains, A/MX mechanisms, and a default policy—without memorizing SPF syntax.
Open toolWeb
Redirect Generator
Generate 301 or 302 redirect rules for Apache, Nginx, or PHP when a page, permalink, or website URL moves.
Open toolText
Word & Character Counter
Count words, characters, sentences, paragraphs, and estimated reading time instantly as you type or paste text.
Open toolFinance
Profit Margin Calculator
Calculate dollar profit, profit margin, and markup from revenue and cost so you can compare the three values side by side.
Open toolFinance
Markup Calculator
Turn a known cost and desired markup percentage into a selling price and gross profit estimate.
Open toolFinance
Discount Calculator
Calculate the final sale price and dollar savings from a percentage discount, then compare discounts on the same price basis.
Open toolDeveloper
Base64 Encoder & Decoder
Encode text as Base64 or decode Base64 back into readable text directly in your browser.
Open toolDeveloper
URL Encoder & Decoder
Percent-encode text for use inside URL components or decode percent-encoded values back into readable text.
Open toolDeveloper
Unix Timestamp Converter
Convert Unix timestamps into readable dates and convert local date/time values back into Unix time.
Open toolDeveloper
UUID Generator
Generate one or many UUID v4-style identifiers in your browser for development, testing, APIs, and distributed records.
Open toolEveryday
Password Generator
Generate strong random passwords locally in your browser with configurable length and character sets.
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