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Crypto & Web3 · 10 tools Browse all →
HMAC Generator
RT-CW3-001

Generate HMAC signatures with SHA-1, SHA-256, SHA-384 or SHA-512. Output as hex, base64 or base64url. All computation in your browser — your secret never leaves this page.

Crypto & Web3 →
Impermanent Loss Calculator
RT-CW3-005

See the impermanent loss on a liquidity position vs just holding

Crypto & Web3 →
Crypto Profit Calculator
RT-CRY-001

Calculate your crypto profit or loss — enter buy and sell prices to see your exact return on investment.

Crypto & Web3 →
Bitcoin Converter
RT-CRY-002

Convert Bitcoin to SGD, USD, EUR and more — with live rates updated every 60 seconds.

Crypto & Web3 →
Ethereum Gas Fee Calculator
RT-CRY-003

Calculate Ethereum gas fees in ETH and USD — understand what you'll pay before you confirm any transaction.

Crypto & Web3 →
ETH Unit Converter
RT-CRY-004

Convert between Wei, Gwei, ETH

Crypto & Web3 →
NFT Royalty Calculator
RT-CRY-005

Calculate NFT creator royalty earnings

Crypto & Web3 →
RSA Key Pair Generator
RT-CW3-003

Generate 2048/3072/4096-bit RSA keypairs in PEM and JWK formats, in-browser.

Crypto & Web3 →
TOTP / 2FA Code Generator
RT-CW3-002

Generate and verify TOTP codes (RFC 6238) entirely in your browser.

Crypto & Web3 →
Bcrypt Generator & Checker
RT-CW3-004

Hash passwords with bcrypt and verify hashes — all client-side, cost-factor adjustable.

Crypto & Web3 →
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