JWT Decoder

Header and payload of a JSON Web Token.

Input Parameters

JWT token

Signature part (not verified)SflKxwRJSMeKKF2QT4fw…—

Header

{
  "alg": "HS256",
  "typ": "JWT"
}

Payload

{
  "sub": "1234567890",
  "name": "John Doe",
  "iat": 1516239022
}

175 available

Annuity and differentiated monthly installments, interest breakdown, and amortization schedule.

Calculate PITI (Principal, Interest, Taxes, Insurance), PMI, and accelerated payoff savings.

Visualize compound growth with recurring deposits, annual rate, and investment horizons.

Add or extract Value Added Tax (VAT) with international country presets.

Analyze profitability and percentage return on business capital and investments.

Gross to net salary with income tax, social contributions and deductions, monthly and annual.

Decode any JSON Web Token into header and payload JSON with expiry verdict.

Three parts?

Header, payload and signature, dot-separated and base64url-encoded.

Signature verified?

No — decoding only; verification needs the secret or public key.

exp claim?

Unix timestamp compared against now for the expired/valid badge.