How to use this calculator
- Enter bid quote, ask quote.
- Choose a display currency, then select Calculate. Results also update after a brief pause while you edit.
- Read the result with the assumptions below. Export details or save a second scenario to compare your choices.
Formula and method
Midpoint=(ask+bid)/2; relative spread=(ask−bid)/midpoint.
Assumptions and limitations
Both quotes must use the same direction, currency pair and timestamp.
Worked example
With bid quote = 3.6, ask quote = 3.7, midpoint is approximately 3.65.
What the result means
A wider spread represents a larger quote gap before other fees.
Common questions
How should I interpret midpoint?
A wider spread represents a larger quote gap before other fees.
What should I check before using this result?
Both quotes must use the same direction, currency pair and timestamp.
Methodology and transparency
Calculation specification reviewed on 2026-10-14. Mathematical implementation is tested against independent reference fixtures. This does not imply review by a licensed financial professional. Read the testing and precision policy.