All tools

20 free, browser-only tools across AI, SEO, finance, and more.

GPT Token Calculator

Estimate GPT tokens and API cost instantly.

AI API Cost Calculator

Compare OpenAI, Claude, and Gemini API pricing.

Claude Token Calculator

Estimate Claude tokens and Anthropic API cost.

Gemini Pricing Calculator

Estimate Google Gemini API cost.

PayPal Fee Calculator

Calculate PayPal fees for any transaction.

Etsy Fee Calculator

Estimate Etsy listing, transaction, and payment fees.

Shopify Profit Calculator

Calculate net profit and margin for Shopify products.

Add or remove VAT for any country.

Salary to Hourly Calculator

Convert annual salary to hourly, weekly, monthly.

Freelance Hourly Rate Calculator

Find the hourly rate you actually need to charge.

Solar Panel Calculator

Estimate solar system size, cost, savings & payback.

Meta Tag Generator

Generate SEO meta tags with live preview.

Robots.txt Generator

Create a robots.txt file for your site.

Sitemap Generator

Generate an XML sitemap from a URL list.

JSON-LD Schema Generator

Generate JSON-LD structured data for SEO.

Format, validate, and minify JSON.

Base64 Encoder / Decoder

Encode and decode Base64 strings instantly.

Generate UUID v4 identifiers.

Count words, characters, and reading time.

Image Converter

Convert between PNG, JPG, and WEBP.

Merge multiple PDFs into one.

Period Calculator

Predict your next period and fertile window.

Pregnancy Due Date Calculator

Find your baby's due date and pregnancy week.

Water Intake Calculator

How much water should you drink per day?

Diet Plan Calculator

Calorie needs and macros for your goal.