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All five calculators are on this page — slide down to the one you need, or jump straight to it.

Calculator 01 of 05

Position Size Calculator

Work out the lot size that keeps a losing trade inside the risk you are prepared to take. Enter your balance, the risk per trade and the stop distance — the pip value and the currency conversion are filled in for you.

Inputs

How much do you want to risk?
Currency pair

1 standard lot = 100,000 units of the base currency.

Same currency on both sides, so no conversion is needed.

Result

Position size
Units (base currency)
Mini lots
Micro lots
Risk on this trade
Pip value per standard lot
Stop distance

Fill in the fields on the left - the result updates as you type.

Calculator 02 of 05

Pip Value Calculator

See what one pip is worth in your account currency for any position size. This is the number behind every stop-loss and take-profit decision.

Inputs

1 standard lot = 100,000 units of the base currency.

Currency pair

Same currency on both sides, so no conversion is needed.

Result

Value of 1 pip
Pip value in quote currency
Pip value per standard lot
Position size in units
Pip size used
Value of a 10-pip move
Value of a 100-pip move

Pick a pair and a position size to see the pip value.

Calculator 03 of 05

Margin Calculator

Check how much of your equity a position will lock up as margin before you open it — the number that decides whether you still have room to survive a drawdown.

Inputs

1 standard lot = 100,000 units of the base currency.

Currency pair

Add it to see the margin as a share of the account and the free margin left over.

Same currency on both sides, so no conversion is needed.

Result

Required margin
Position value (notional)
Position size
Leverage used
Margin as % of balance
Free margin after opening

Choose a pair, a position size and a leverage to see the margin requirement.

Calculator 04 of 05

Profit & Loss Calculator

Turn a price move into money. Enter entry, exit and position size to see the result in pips and in your account currency — useful before a trade as much as after one.

Inputs

1 standard lot = 100,000 units of the base currency.

Direction
Currency pair

Same currency on both sides, so no conversion is needed.

Result

Profit / loss
Move in pips
Profit / loss in quote currency
Pip value for this position
Trade
Position

Enter the position size, entry price and exit price to see the profit or loss.

Calculator 05 of 05

Currency Converter

Convert any amount between 24 currencies — majors, minors and metals — at the mid-market rate. Everything happens in your browser, with no signup and no tracking.

Inputs

Result

Converted amount
Exchange rate
Inverse rate
You convert
Rate taken at

Mid-market rate - your bank or broker will add a spread or a commission.

Your inputs are remembered in this browser only — nothing is uploaded and no account is needed. Rates come from public mid-market feeds (open.er-api.com for currencies, gold-api.com for gold and silver). If that feed is unreachable the page falls back to the last rates this browser saw, then to a bundled offline table, so all five calculators keep working with a manual rate.

What is a pip?

A pip ("percentage in point") is the smallest standard price move in a currency pair. For most pairs, one pip equals a change in the fourth decimal place (0.0001). Pairs that include the Japanese yen are the exception — since the yen is quoted with fewer decimal places, one pip there equals a move in the second decimal place (0.01).

Pips exist so traders have a common unit to describe price movement and profit or loss, regardless of which currency pair they are trading. Saying "the trade moved 35 pips" means the same thing structurally whether you are trading EUR/USD or USD/JPY, even though the actual price change looks different in each case.

The dollar (or account-currency) value of one pip depends on three things: the currency pair, the size of your position, and the current exchange rate. That is exactly what the Pip Value Calculator above works out for you automatically.

Gold and silver sit outside the standard four-decimal convention. This page follows the usual retail convention for metals — they are quoted to two decimals, so on XAU/USD one pip equals one point (0.01). Every calculator on this page states the pip size it is using, so you can always see the assumption behind the number.

How position sizing works

Position sizing answers one question: how many units of currency should you buy or sell so that if your stop-loss is hit, you lose no more than the amount you are willing to risk?

The calculation depends on three inputs: your account balance, the percentage (or fixed amount) of that balance you are willing to risk on the trade, and the distance in pips between your entry price and your stop-loss.

A trader risking 1% of a $10,000 account with a 20-pip stop-loss needs a much larger position to hit that same 1% risk than a trader using a 100-pip stop. Wider stops call for smaller position sizes, and tighter stops allow for larger ones — the Position Size Calculator does this math instantly so you never have to estimate it under pressure.

Getting this step wrong is one of the most common ways new traders damage their accounts — not by picking bad trades, but by sizing good trades too large relative to their risk tolerance.

How margin is calculated

Margin is the amount of money your broker sets aside from your account balance to open and hold a leveraged position — it isn't a fee, it's collateral that gets released back to you when the position closes.

Required margin depends on the size of the position and the leverage your broker offers. At 1:100 leverage, a $100,000 position requires $1,000 of margin. At 1:500 leverage, that same position only requires $200. Higher leverage means less margin is tied up per trade, but it also means your account can absorb less adverse price movement before a margin call, so it cuts both ways.

The Margin Calculator above lets you test different leverage levels against a given position size, so you can see exactly how much of your account balance a trade will use before you place it.

Calculating profit and loss

Once a trade closes, profit or loss is simply the difference between your entry and exit price, converted into pips, and then multiplied by your pip value and position size.

The Profit/Loss Calculator above lets you test this before you ever place a trade — plug in a hypothetical entry, a target exit, and your position size, and see exactly what the trade is worth in your account currency if it plays out. It's a useful sanity check for whether a setup's potential reward actually justifies the risk you calculated in the Position Size tab.

Frequently asked questions

How do I calculate lot size in forex?+
Divide the amount of money you're willing to risk on the trade by your stop-loss distance in pips, then divide that by the pip value for one full lot in your chosen pair. The Position Size Calculator does this automatically — just enter your account balance, risk percentage, stop-loss and currency pair.
What is pip value and why does it matter?+
Pip value is how much one pip of price movement is worth in your account's currency, for a given position size. It matters because it's the missing piece between "the market moved X pips" and "I made or lost $Y" — without knowing your pip value, you can't accurately size a position or judge risk.
Does pip value change with position size?+
Yes. Pip value scales directly with position size — doubling your position doubles the value of each pip. A standard lot, mini lot and micro lot of the same pair will each have a different pip value, roughly 10x apart at each step.
Why is the pip value different for yen pairs?+
Because yen pairs are quoted with two decimal places instead of four, one pip in a yen pair represents a larger relative price move than in a non-yen pair. The calculator adjusts for this automatically based on the pair you select, and shows the pip size it used.
How much margin do I need to open a forex position?+
It depends on your position size and your broker's leverage. Required margin equals position size divided by leverage. At 1:100 leverage, a standard 100,000-unit lot requires $1,000 of margin (assuming a USD-denominated pair); at 1:30 leverage, the same lot would require roughly $3,333. Run your own numbers in the Margin Calculator.
What's a safe amount to risk per trade?+
Many traders use a rule of risking no more than 1-2% of account balance on any single trade, so that a losing streak doesn't seriously damage the account. This calculator lets you test any risk percentage you choose — it's a planning tool, not a recommendation of what your specific risk tolerance should be.
Are these calculators accurate for all currency pairs?+
Yes — the calculators use live exchange rates and adjust automatically for pip size differences (e.g. yen pairs vs. non-yen pairs), so results are accurate across majors, minors and cross pairs. Gold and silver are quoted to two decimals, so one pip there equals one point.
Is this forex calculator free to use?+
Yes, all five calculators — position size, pip value, margin, profit/loss and currency conversion — are free, require no signup, and run entirely in your browser. Your inputs are stored only in your own browser, and nothing is sent to us.

From the calculator to the trade

These five calculators answer the arithmetic questions. The BneuTech Trading OS answers the ones that come next: when to trade, how much to trade, and whether your own behaviour is helping or hurting your results.

  • Bneu Execution and Scaling System — a trading command centre with an opportunity radar over 28 forex pairs plus XAUUSD, five lot-sizing methods, adaptive money management and a built-in trade copier. It applies the position-sizing maths on this page automatically.
  • Bneu Prop Firm Pass — monitors challenge rules, caps exposure and warns before an avoidable breach becomes a failed evaluation.
  • Bneu Market Intelligence System — tells you when conditions favour trading and when the right size is zero.
  • Bneu Performance Mastery System — AI coaching plus five behaviour detectors that review your real trade history for overtrading, revenge trading, tilt and streaks.

How this tool works, and its limits

  • Rates. Currency rates come from the public open.er-api.com mid-market feed, and gold and silver from gold-api.com. Mid-market is the middle point between buy and sell prices — your broker's or bank's rate will differ by the spread. If the feed cannot be reached, the page falls back to the last rates your browser saw and then to a bundled offline table, and every field stays editable so you can enter your own rate.
  • Pip sizes. 0.0001 for standard pairs, 0.01 for yen-quoted pairs, and 0.01 for gold and silver. Each result states the pip size it used.
  • Lot sizes. 1 standard lot = 100,000 units of the base currency, or one broker contract for the metals: 100 troy ounces of gold (XAU) and 5,000 troy ounces of silver (XAG). Mini lots are 1/10 of that and micro lots 1/100. Choose "units of the base currency" to work in ounces directly.
  • What is not included. Spread, commission, swap/rollover, broker stop-out levels and any slippage between the candle you analysed and the fill you received. A margin figure is the requirement at a single instant; a floating loss increases it.
  • Scope. These calculators are educational tools, not investment advice. Check the risk disclosure in our legal section before risking real capital.