Pick the coin you have, pick the coin you want, type how much. The box checks many exchanges at once and shows what you will really get before you confirm.
Why use this box
Best price: it checks many exchanges at once and can split your swap between them.
No surprises: some coins keep a cut when you buy or sell - the box shows the real amount first.
Your price: use the Limit tab to buy or sell only when the price reaches your number.
Your wallet: no account, no sign-up. You confirm every swap yourself.