Bid-Ask Calculator — Fixed

💱 Bid-Ask Calculator

Bid price Ask price

Spread: — | Margin: —

Bid-Ask Spread

The bid-offer (bid-ask) spread is the difference between the quoted sale price (bid) and the quoted purchase price (ask) of a security, stock, or currency exchange.

Spread = Ask − Bid

Bid-Ask Margin (percentage)

Bid-ask margin is the percentage spread: the difference between ask and bid divided by the ask price, expressed as a percentage. It tells you the spread relative to the ask (selling) price.

Margin % = (Ask − Bid) / Ask × 100

Notes:

Enter numeric values; scientific notation like 3.45e2 is supported in the input field.
Both bid and ask must be positive numbers and ask >= bid usually — calculator will validate.
Result precision: spread shown to 6 decimals, margin shown to 4 decimals (%)