Bid-Ask Calculator
Calculator Use
Bid Ask Spread
Bid-offer or bid-ask spread is calculated as:
Spread = Ask - Bid
The spread is the difference between the quoted sale price (bid) and the quoted purchase price (ask) of a security, stock, or currency exchange.
Bid Ask Margin
Bid-ask margin is the spread percentage, or the difference between ask and bid prices divided by the ask price. Percentage spread is calculated as:
Margin % = \( \dfrac{(Ask-Bid)}{Ask} \times 100 \)
The bid ask margin is the percentage change, bid price relative to ask price.
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This article provides authoritative insights around Financial topics and calculations, and provides a free Bid-Ask Calculator tool.
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Cite this content, page or calculator as:
Furey, Edward "Bid-Ask Calculator" at https://www.calculatorsoup.com/calculators/financial/bid-ask-calculator.php from CalculatorSoup, https://www.calculatorsoup.com - Online Calculators
Last updated: August 1, 2025