Forex Execution Latency Calculator
Summarize 2–500 user-recorded latency observations in milliseconds with mean, median, range, sample dispersion and explicit R7 percentiles. Compare the sample with your own reference threshold while keeping network ping, request processing, fills, slippage and future execution quality separate.
Enter one latency observation context
Use measurements with the same start and end event. Do not mix network ping, request acknowledgement and completed-fill durations.
Observed latency summary
Entered Trading Infrastructure Observations 1.0.0
On smaller screens, scroll horizontally to inspect the audit notes.
| Audit item | Entered or derived basis |
|---|
How the latency sample is summarized
Mean = sum of entered milliseconds ÷ observation count
R7 percentile location = p × (n − 1), interpolated between ordered observations
The page accepts 2–500 nonnegative millisecond values. It assumes the user measured every row from the same start event to the same end event; the browser cannot inspect code, terminal logs or clock synchronization.
Minimum and maximum bound only the entered sample. Mean uses every measurement and median supplies a separate centre that is less affected by a small number of long observations.
Sample standard deviation uses denominator n minus one. It describes entered dispersion and does not determine whether the latency process is stable, independent, normally distributed or representative of another period.
R7 90th and 95th percentiles linearly interpolate within the ordered values. They are reproducible descriptive summaries, not a service-level objective, upper confidence bound or future maximum.
The entered reference produces at-or-below and strictly-above counts. It remains a user comparison line; the calculator does not assign fast, slow, acceptable, degraded or failed labels.
Worked example from the audited fixture
The audited fixture enters ten latency observations in milliseconds: 24, 31, 28, 45, 120, 33, 27, 29, 36 and 52, with an entered reference of 50 milliseconds.
- The arithmetic mean is 42.5 ms, median is 32 ms, minimum is 24 ms, maximum is 120 ms and sample standard deviation is approximately 28.563 ms.
- R7 interpolation produces a 90th percentile of 58.8 ms and a 95th percentile of 89.4 ms. Eight observations are at or below the entered reference and two are strictly above it.
Reproduce it: select “Load audited example” above. The immutable fixture is recomputed from first-principles arithmetic rather than copied from a provider result.
How to interpret the result
- Define the measured interval first: terminal-to-server ping, synchronous request duration, acknowledgement or completed execution are not interchangeable.
- Compare mean and median to see whether long entered observations materially affect the average. Do not automatically delete those rows as outliers.
- Use the maximum only as the longest recorded row in this sample. A later network, platform or server event can take longer.
- Compare like with like across locations or hosts: same broker access point, account, terminal build, measurement method and observation window.
- Keep latency and price outcome in separate fields and tools. A millisecond value alone cannot determine direction or size of slippage.
- Inspect terminal and VPS logs when a row changes materially. This calculator cannot identify whether the source was local CPU, network, broker gateway, venue, market state or measurement error.
Assumptions and limits
- No ping test, VPS, terminal, broker server, order request, trade transaction, journal or monitoring service is connected.
- The browser does not verify monotonic clocks, timestamp precision, clock drift, synchronous versus asynchronous calls or the start and end event definition.
- The sample does not include order result codes, fills, partial fills, rejected volume, requested price, confirmed price, Bid, Ask or market conditions.
- No causal relationship between VPS location, latency, slippage, requotes, fill probability, profit or loss is estimated.
- Irregular sampling, missing failures, survivorship, news periods, network routing and broker infrastructure changes can make comparisons unrepresentative.
- No latency target, provider, server location, EA architecture, execution mode, broker, order or trade is recommended.
Which infrastructure calculator answers which question?
Batch 49 keeps cost, spread and time in separate models because one number cannot safely stand in for another. The VPS calculator normalizes entered expense, the spread calculator summarizes a same-unit price-width sample, and the latency calculator summarizes elapsed milliseconds. None converts its output into a broker, host or trading verdict.
| Tool | Primary input | Primary output | Hard boundary |
|---|---|---|---|
| VPS Cost | Entered subscription and related costs | Monthly, term, annual and allocation views | No provider or suitability verdict |
| Spread Statistics | One consistent pips or points sample | Centre, range, dispersion and R7 tails | No live quote or broker grade |
| Execution Latency | One consistent millisecond sample | Centre, range, dispersion and R7 tails | No fill, slippage or quality prediction |
Frequently asked questions
- It reports count, minimum, maximum, arithmetic mean, median, sample standard deviation and R7 90th and 95th percentiles for entered millisecond observations.
- Use one consistently defined interval, such as a documented ping or one request-to-response measure. Do not mix ping, acknowledgement and completed-fill duration.
- No. It reads only millisecond values entered locally and does not connect to a VPS, terminal, broker server, order or monitoring service.
- No. The page estimates no causal relationship between milliseconds, requested price, confirmed price, fills, requotes, market state or transaction outcome.
- Version 1.0.0 uses the disclosed R7 linear-interpolation convention over the ordered entered observations.
- It is a user-defined comparison line. Counts at or below and strictly above it receive no fast, slow, acceptable or failed label.
- Not automatically. Verify the record and measurement method first. Removing a real delay can make the entered sample look artificially stable.
- No. It does not assess network routing, platform load, server infrastructure, execution policy, strategy sensitivity or suitability.
Sources and methodology
- MetaTrader 5 — Working with the Virtual Platform — Official documentation that displays VPS-to-broker network delay as ping in milliseconds.
- MQL5 — Trade Request Result — Official separation of request identifiers, return codes, confirmed volume and price from a timing observation.
- NIST — Percentiles — Primary statistical reference for ordered observations and the disclosed R7 interpolation convention.
Version 1.0.0 performs deterministic local arithmetic and uploads no entered value. Sources define platform fields, financial concepts and statistical conventions; they do not verify the user’s sample or endorse a displayed result.
Separate time, price and infrastructure questions
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Infrastructure statistics do not replace current broker disclosures. Verify the exact entity, account, symbol, pricing, execution and platform terms available in your jurisdiction before opening or funding an account.
Risk and affiliate disclosure: Leveraged forex and CFD trading can result in substantial losses. Historical spread or latency observations and infrastructure cost do not predict execution or returns. 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 entity.