Parametric
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Forex risk toolkit

Size every trade by risk, not by guesswork.

Parametric turns your account balance, risk tolerance and stop distance into an exact position size — plus pip value, margin and profit-and-loss figures. Everything is computed on your device, so it works with the connection off and asks for nothing in return.

Open the calculator See what it does
5Calculators
45Currency pairs
19Account currencies
0Accounts required
Position size
0.00lots
Try it — the numbers update as you type
Risk amount—
Units—
Pip value—

Five calculators, one consistent model

Each screen shares the same pair list, account currency and conversion logic, so numbers agree with each other instead of drifting between tools.

Position size

Balance, risk percentage and stop distance become an exact lot size, with the risk amount and units spelled out.

Pip value

What one pip is worth for any pair and lot size, converted into your account currency, including JPY-quoted pairs.

Margin

Required margin and notional exposure at any leverage from 1:1 to 1:500, with free margin and utilisation.

Profit and loss

Pips, gross result, commission and net outcome for a long or short trade between any two prices.

Risk / reward

Ratio from entry, stop and target, plus the break-even price once spread and commission are covered.

Works offline

Install it to the home screen and it keeps calculating with no connection — the maths never needed a server.

Inside the app

Five screens, a bottom tab bar and nothing else. No sign-in, no onboarding, no upsell.

Open app
1

Size

Risk-based position sizing with quick presets.
2

Pip

Pip value per lot and a table of common sizes.
3

Margin

Margin, notional and utilisation by leverage.
4

P&L

Outcome, risk/reward and break-even price.
5

Saved

Stored setups and account preferences.

About Parametric

Parametric is a calculation tool for foreign exchange traders. It takes the numbers you type in — balance, risk, stop distance, lot size, prices — and returns the arithmetic that follows from them.

It is not a broker and not a trading platform. There is no order routing, no account linking, no market feed and no advice. The only outside data it uses is a daily set of European Central Bank reference rates, needed to express results in your account currency.

Risk warning. Trading foreign exchange on margin carries a high level of risk and may not be suitable for all investors. The possibility exists that you could sustain a loss in excess of your deposited funds. Nothing here is investment advice.

Nothing leaves the deviceCalculations, preferences and saved setups all stay in local storage.
Full function offlineOnly currency conversion needs the network, and cached rates cover that.
No accounts, no trackingNo sign-up, no analytics, no advertising identifiers, no cookies.
45 pairs, 19 account currenciesMajors, crosses and common exotics, with correct pip sizing for JPY quotes.

Contact support

Questions about the calculators, a suspected error in a formula, or legal enquiries — write to us and we will reply within two business days.