Updated for 2026

Top Free Online Tools

Our most popular tools used by millions. Crypto calculators, developer utilities, and productivity tools—all free, no signup required.

Crypto Calculators

Calculate profits, taxes, and ROI for any cryptocurrency

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Crypto Profit Calculator

Calculate profits for any cryptocurrency investment instantly.

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Bitcoin Profit Calculator

Calculate BTC investment returns with real-time data.

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Ethereum Profit Calculator

Calculate ETH profits including gas fee estimates.

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Tax Season

Crypto Tax Calculator

Estimate capital gains tax on cryptocurrency trades.

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Crypto ROI Calculator

Calculate return on investment for any crypto.

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Crypto Investment Calculator

Project future value of crypto investments.

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Altcoin Profit Calculators

◎Solana ₳Cardano ÐDogecoin ⓂPolygon ✕XRP ŁLitecoin

Developer Tools

Essential utilities for developers and designers

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JSON Formatter

Format, beautify, and validate JSON data.

QR Code Generator

Generate QR codes for URLs, text, and more.

Password Generator

Create secure random passwords instantly.

Base64 Encoder/Decoder

Encode and decode Base64 strings.

URL Slug Generator

Create SEO-friendly URL slugs.

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