Save your account details, paste or enter the trade setup, and see the lot size plus estimated cash risk, spread, commission and margin before you place the trade.
Built to help you protect capital, avoid oversized losses and keep more of what you make by sizing every trade properly.
TraderOS · lot size calculator
Lot size calculated
Use 0.18 lots to risk about $96.66
Account
$10,000
Risk
$96.66
Lot size
0.18
Entry 2350 · Stop 2345 · Target 2362
News context checked for XAUUSD
Risk understood
Lot size, cash risk, costs and net R:R are clear.
Not a signal. Not a prediction.
TraderOS is not trying to predict the market. It tells you the position size, cash risk, R:R and margin for the trade you are already planning.
TraderOS · lot size calculator
Instrument
XAU/USD · 1h
Entry
2350.00
Stop
2345.00
Target
2362.00
Account
$10,000
Risk limit
1%
Saved rule
2R min
Calculator result
Saved account details plus this trade setup.
Account
£10,000
Risk
1%
Instrument
XAUUSD
Direction
Long
Entry
2350.00
Stop
2345.00
Calculated position
Lot size
0.18
Loss at stop
$96.66
Net R:R
2.17:1
Margin needed
$423
What this means
News context
USD CPI at 13:30. This may affect XAUUSD volatility.
Most mistakes happen before the order is placed, when the risk has not been calculated properly.
The same inputs every time. The same risk calculation every time.
Save your balance, currency, leverage and normal risk percentage so you do not retype them every trade.
Paste a TradingView chart or enter the instrument, entry, stop and target. TraderOS calculates the lot size for your risk.
See money at risk, spread, commission, net R:R, margin needed and relevant news context in one place.
Paste the chart first. TraderOS reads the visible setup, you confirm it, then your saved account turns it into a full cash-risk breakdown.
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TraderOS is not a signal service, broker or profit predictor. It is a lot size and risk calculator for planned trades.
The actual product
This is the live TraderOS calculator. The account settings, pasted chart and calculation result below are the same interface members use for every trade.
Copy a TradingView chart or upload an image. TraderOS fills the visible setup for you to confirm.
Lot size, cash risk, spread, commission, margin and net R:R update together.
Save balance, currency, leverage, normal risk and commission instead of retyping them.
Each completed calculation is saved with its instrument, direction, risk and lot size.
A clean set of numbers you can understand before you place the order.
A normal calculator gives one number. TraderOS includes broker costs, margin, chart input, news and saved account context around the trade.
TraderOS membership
£24.92/month
£299 total, billed once a year
Free for 7 days, then the plan price below · Cancel any time before you're charged · Stripe secure checkout
Get early access to the TraderOS lot size and risk calculator.