How is MT5 Mobile calculated?

Direct answer: what MT5 Mobile “calculation” means

MT5 Mobile does not have one single calculation labeled “MT5 Mobile.” Instead, it displays account metrics that the platform computes from:

Account balance (cash result already realized)
Open positions (their size, direction, and entry details)
Current quotes (the latest prices used to revalue open positions)
Margin rules (the leverage/margin requirement applied to each open position)
Costs and adjustments recorded on the account (for example, commissions, swaps, and fees as they affect balance and P/L)

So, when someone asks “How is MT5 Mobile is calculated?”, the useful interpretation is: How are displayed metrics such as unrealized profit/loss, equity, used margin, free margin, and margin level computed from the underlying account and quote data?

Mechanism and definitions: the stable model

To explain the mechanics, define the main quantities. Names can vary slightly across interfaces, but the relationships are stable.

1) Unrealized profit or loss (floating P/L)

For each open position, the platform estimates profit or loss using the current price and the position’s contract size and direction.

If you are long (buy), unrealized P/L rises when the bid/close price increases relative to your entry price.
If you are short (sell), unrealized P/L rises when the price decreases relative to your entry price.

Exact details depend on the instrument’s pricing convention and what the platform uses internally for “current price” (often bid for selling value and ask for buying value). The key point is that unrealized P/L is a function of the open position parameters plus the latest quote used for revaluation.

2) Equity

A common core relationship is:

Equity = Balance + Unrealized P/L

Equity therefore changes whenever either (a) your realized balance changes (e.g., new deals, deposits/withdrawals recorded, swaps/fees posted), or (b) quotes change, which changes unrealized P/L.

3) Used margin (margin required by open positions)

Platforms allocate a portion of your equity as margin for each open position. Used margin typically aggregates the per-position required margin.

A simplified expression for the idea is:

Used margin = Σ (Required margin per open position)

The required margin per position is driven by the instrument contract specifications and the margin requirement that follows from the account’s leverage/margin settings. Because these rules can differ by instrument and account configuration, you cannot compute this part reliably without the specific contract/margin parameters shown in your account or terminal.

4) Free margin and margin level

Once equity and used margin are known:

Free margin = Equity − Used margin
Margin level = (Equity ÷ Used margin) × 100%

These quantities are usually used to assess how much buffer exists before margin calls or forced actions. They are derived metrics, not independent data feeds.

Evidence or example (with explicit assumptions)

Because there is no live pricing in this explanation, use a hypothetical numeric example that demonstrates the relationships.

Assume a single-account snapshot:

Balance = 10,000
You have one open position with unrealized P/L = +250
Used margin tied to that open position = 2,000

Then:

Equity = 10,000 + 250 = 10,250
Free margin = 10,250 − 2,000 = 8,250
Margin level = (10,250 ÷ 2,000) × 100% = 512.5%

This example shows what “calculated” means in practice: the platform recomputes equity and margin-related metrics whenever unrealized P/L or used margin changes. Used margin changes mainly when positions open/close or when margin requirements are adjusted by the account/instrument settings.

What inputs you must know to reproduce it

To independently reproduce MT5-style numbers, you need:

Balance shown by the terminal
Unrealized P/L per position (or enough position parameters to recompute it)
Used margin per open position or the aggregated used margin
The terminal’s current quote convention used for P/L (which side of the spread and which timestamp/price snapshot)

Without the quote and the instrument’s contract/margin conventions, you can reproduce the algebra but not the exact outputs.

Limitations and risks: where calculations can diverge

At least one important limitation is that these calculations depend on inputs that can differ across time, connection, and quoting.

Material failure modes

Quote timing and spread effects: Unrealized P/L depends on the latest price snapshot used by the terminal. If you compare your manual calculation to a later or earlier moment, values will not match.
Bid/ask convention mismatch: If you use the wrong side of the spread (or a different definition of “current price”), you will compute a different floating P/L.
Margin rule differences: Used margin depends on instrument and account-specific margin requirements and contract specifications. General formulas can explain the relationships, but exact figures require the platform’s configured parameters.
Costs included in balance and/or P/L: Commissions, swaps/rollover, and fees can affect either balance and/or floating P/L depending on how the platform posts them. If your reproduction ignores these, results diverge.

Verification limits

Historical relationships do not guarantee future alignment because quotes and spreads change.
Market conditions, execution details, and platform/account settings affect outcomes; identical trades on different accounts can produce different margin and buffer metrics.

Verification or next question: how to check it on your own

To verify the mechanics independently (without assuming any single “formula page” is complete), do this approach:

Open the account panel in MT5 Mobile and note Balance, Equity, Used Margin (or Margin), and Margin Level.
Open Positions and note unrealized P/L per position.
Check the algebraic relationships: Equity should equal Balance + Unrealized P/L, and Free margin should equal Equity − Used margin.
If the relationship fails, the likely causes are quote timing, bid/ask convention, or how costs are posted.

If you want, tell me which exact metric label you mean (for example: Equity, Free Margin, or Margin Level) and whether you want the position-level P/L convention (bid/ask) described generically. I can then restate the calculation relationships that apply to that specific metric, still in a self-contained and verification-focused way.