Weekend Gap Calculator
Measure the signed price, pip and percentage difference between two timestamped observations from the same broker or platform and the same Bid, Ask or Last basis. This is post-observation arithmetic, not a gap-fill forecast.
Record two observations
Keep the source, symbol and price basis consistent.
A descriptive label only; the page does not connect to or verify this source.
Pre-weekend observation
Reopening observation
Observed difference
Weekend Gap Measurement 1.0.0.
How the observed weekend gap is measured
The reopening price is subtracted from neither a range edge nor a forecast. The tool takes the direct difference from the entered pre-weekend price, then divides by the selected instrument's governed pip size.
Signed pips = Signed gap / Pip size
Gap percentage = Signed gap / Pre-weekend price x 100
Positive means the reopening observation is higher; negative means it is lower. Calculation precision remains unrounded until display.
Worked example from the audited fixture
How to interpret the result
The positive sign records that the second entered Bid observation is higher than the first. It does not show whether either price was executable, whether an open position gained 25 pips or whether the difference will close. Position direction, spread, slippage, quantity, costs and account-currency conversion remain outside this measurement.
Assumptions and limits
- Both prices must come from the same broker or platform, symbol and Bid, Ask or Last basis.
- The timestamps and offsets preserve when each observation was recorded; the tool does not infer a universal Friday close or reopening time.
- The prices are not verified as executable, tradable, official or free of spread and slippage effects.
- The result is not position P&L and contains no lot size, direction, account conversion, fees or execution.
- No fill probability, future direction, gap-closing time or trading recommendation is modeled.
Frequently asked questions
- It is the reopening observation minus the pre-weekend observation. Positive is higher, negative is lower and zero is unchanged.
- Comparing a Bid with an Ask or Last can mix spread or market conventions into the measured difference.
- No. Broker symbol hours and price feeds differ, so both timestamped observations must be entered.
- This calculator does not estimate fill probability or future price behavior. It measures two observations only.
- No. Position P&L also needs direction, quantity, account-currency conversion and any entered trading costs.
- Yes, using this site's governed pip sizes. Verify the symbol precision and pip convention with your broker before interpreting the pip result.
- An offset can change across a daylight-saving transition or server-policy change, so each timestamp keeps its own explicit offset.
- No. The source label is a record for you; the browser page does not connect to or authenticate the broker or platform.
Sources and methodology
- MetaTrader 5 Price Data — OTC charts are generally Bid-based, while exchange instruments can use Last prices.
- MetaTrader 5 Market Watch — broker quote and server-time context.
The route uses Weekend Gap Measurement 1.0.0 and Time Reference 1.0.0. It contains no market feed or forecast model.
Continue the boundary workflow
Verify symbol and price-basis terms
Use the same broker entity, symbol and price basis for both observations, and confirm weekend trading hours.
FXOpen
Review quote, symbol and session specifications before comparing observations.
Check FXOpen termsRisk and affiliate disclosure: Leveraged forex and CFD trading can result in substantial losses. These are affiliate links, so ForexMT4Indicators.com may receive compensation if you register or trade through them, at no additional cost to you. Availability and terms vary by jurisdiction and broker entity.