Free forex tool
Plan Your Trade Before You Place It
Calculate position size, see modelled profit and loss, include costs, and compare your options. Free to use.
Result
Within your entered budget under these assumptions
0.31 lots
31,000 EUR units, rounded down to your 0.01-lot step
- Loss at stop
- −99.20net · price −93.00 + costs 6.20
- Gain at target
- 181.35net · price 186.00 − costs 4.65
- Budget used
- 99.2%99.20 of 100.00 USD
- Net reward : risk
- 1 : 1.83before costs 1 : 2.00
Sizing on the price move alone would give 0.33 lots, a modelled loss of 105.60 (1.06% of the balance) once costs are added.
Assumptions
- Your prices are chart/mid prices; a 0.8-pip spread is charged as a cost.
- The stop fills 0.5 pips worse than its price; real fills can be worse (gaps, fast markets).
- Position sized so the price move plus included costs fit the budget, then rounded down to the lot step.
- Not included unless entered: swap beyond 0 night(s), conversion charges, taxes and platform or data fees.
- Calculation version 1.0.0. How this is calculated
Drag the stop or target, or focus a handle and use the arrow keys (Shift for 10 pips). Neither can cross the entry. The form fields work too.
Compare three trade paths
Copy your setup into scenarios B and C and change only what you want to test. These are your own scenarios, not recommendations: no scenario is "better" without evidence about the market.
Add a scenario to see the comparison table.
Consecutive-loss scenario
What your balance would be after a run of losses at this stop and size, recalculated for every trade with your costs and lot step. A sequence you choose, not a probability or a forecast.
After 10 modelled losses: 9,059.20 USD, a drawdown of 9.4%
Each loss risks the same percentage of the balance left, so positions shrink as the balance falls. Recalculated per trade with your costs and lot step.
Solid line and dots: your modelled balance after each loss. Dashed line: the idealised path 10,000.00 × (1 − 1%)n, without costs or lot rounding.
Build my trading workflow
Research and scan, analyse, practise and test, plan, review. Tell us your market and how you work; the builder suggests software for the stages you need from documented capabilities, shows what you already cover, and lists known and unknown costs. TradersDNA's planner always fills the planning stage.
The workflow builder loads with the page's script.
Trading Tools Explorer
All 20 tools in one place: what each is for, which markets and platforms it covers, one documented strength and one limitation, and what access costs.
Ordered by workflow stage, then by name. This is a curated selection, not a ranking; sponsorship never changes the order, filters or suggestions.
Finviz
Research & data
Web-based US stock screener and market maps, with real-time data on Elite
- Strength
- Free registered US stock screener; Elite real-time quotes for $39.50/mo or $299.50/yr
- Limitation
- US stocks only (NASDAQ, NYSE, AMEX); free tier has no alerts, export or interactive charts
Free plan · paid from $24.96/moChecked 13 Oct 2026
Koyfin
Research & data
Web equity screening, fundamentals, macro dashboards and portfolio analytics
- Strength
- Screener, charts, macro dashboards and portfolio analytics in one web app on S&P Capital IQ data
- Limitation
- Capital IQ licensing blocks export of financials, valuation, estimates and growth rates
Free plan · paid from $39/moChecked 13 Oct 2026
Stock Rover
Research & data
Fundamental screening and portfolio analytics for North American stocks, ETFs and funds
- Strength
- Screens North American stocks with up to 800+ metrics and 230+ ready-made screeners
- Limitation
- No refunds under any circumstances; CSV export is blocked during the trial
Free plan · paid from $29/moChecked 13 Oct 2026
Trading Economics
Research & data
Macroeconomic indicators, economic calendar and forecasts via web, apps, Excel and API
- Strength
- Macro indicators, calendar and forecasts through web, apps, Excel, Sheets and a REST API
- Limitation
- Trials are paid, non-refundable and auto-charge; Basic has no export or API
Paid from $22.50/mo (listed)Checked 13 Oct 2026
TradingView
Charting & analysis
Browser-first charting, screening, Pine Script strategy testing and paper trading
- Strength
- Paper trading for all users and Pine Script on every plan, including the free Basic plan
- Limitation
- Basic: 2 indicators per chart, 3 price alerts, no webhooks, replay on daily and higher bars only
Free plan · paid from $12.95/mo (listed)Checked 13 Oct 2026
TrendSpider
Charting & analysis
US-focused charting, scanning, no-code backtesting and alert-driven trading bots
- Strength
- No-code backtesting and bots, with every feature on every plan; tiers differ by capacity
- Limitation
- No free plan; the 14-day trial costs $19 to $49 and is non-refundable
Paid from $59/mo (listed)Checked 13 Oct 2026
cTrader
Trading platform
Broker-provided FX/CFD platform with Market Replay, C# or Python algos and copy trading
- Strength
- Market Replay on Windows, C# or Python algorithms and free cloud hosting for cBots
- Limitation
- FX/CFD-centred via brokers; no published platform price; algos only in desktop apps
Pricing not verifiableChecked 13 Oct 2026
MetaTrader 5
Trading platform
Broker-provided multi-asset trading terminal with MQL5 and Python automation
- Strength
- Free download on Windows, macOS, web and mobile, with a real-tick Strategy Tester and MQL5 or Python automation
- Limitation
- Symbols, history and trading costs depend on your broker; on macOS it runs inside Wine
Free planChecked 13 Oct 2026
NinjaTrader
Trading platform
Futures-focused platform for charting, simulation, backtesting and NinjaScript automation
- Strength
- Free platform for charting, sim and backtesting; C# NinjaScript on Windows desktop
- Limitation
- Desktop and NinjaScript are Windows-only; real-time CME data costs extra
Free plan · paid from $99/mo (one region)Checked 13 Oct 2026
Quantower
Trading platform
Broker-neutral Windows terminal for order-flow charting, DOM trading and market replay
- Strength
- Free version with one broker connection; order-flow add-ons, Market Replay and a C# backtester
- Limitation
- Windows only, market data not included, and replay is not in the Free version
Free plan · paid from $14/mo (listed)Checked 13 Oct 2026
Sierra Chart
Trading platform
Windows futures charting and order entry with its own exchange data, deep replay and C++
- Strength
- Own CME data feed, replay up to 100,000x with depth, and packages from 26 USD a month
- Limitation
- Windows only (Wine unsupported); real-time exchange fees extra and non-refundable
Paid from $16.90/moChecked 13 Oct 2026
Bookmap
Order flow
Desktop order-book heatmap and order-flow analysis with tick-by-tick replay
- Strength
- Tick-level order-book heatmap with record and replay; free Digital tier with live crypto data
- Limitation
- Futures and stock data cost extra, and paid subscriptions are non-refundable
Free plan · paid from $16/moChecked 13 Oct 2026
GoCharting
Order flow
Browser and mobile order-flow charting with bar replay, Lipi scripting and broker trading
- Strength
- Footprint, Market Profile and DOM in a browser, with free Bar Replay and a 7-day trial with no payment
- Limitation
- Order flow needs Premium; prices are "indicative" and refund terms could not be read
Free plan · paid from $16.80/mo (one region)Checked 13 Oct 2026
Forex Tester
Replay & backtesting
Browser tick-data backtesting simulator (Forex Tester Online); legacy FT6 for Windows
- Strength
- Browser tick-data simulator with blind testing and a no-registration free demo
- Limitation
- Official pricing could not be verified (bot challenge); demo limited to 1 month of data
Free plan · paid pricing not verifiableChecked 13 Oct 2026
FX Replay
Replay & backtesting
Browser manual backtesting and bar replay with a prop-firm simulator and trade journal
- Strength
- Free browser replay plan, 310 hosted assets, Prop Firm Simulator and built-in journal
- Limitation
- Non-refundable payments; futures, CME and seconds data need Pro
Free plan · paid from $15/moChecked 13 Oct 2026
QuantConnect
Algorithmic research
Cloud research, backtesting and live deployment of Python or C# trading algorithms
- Strength
- Free unlimited backtesting on hosted multi-asset data; Python or C# on the open-source LEAN engine
- Limitation
- Code only; free tier has no live-trading nodes and a 20-second backtest delay
Free plan · paid from $8/mo (listed)Checked 13 Oct 2026
Edgewonk
Trading journal
Browser journal for performance analytics, trading psychology and trade-management tests
- Strength
- One plan with all features and unlimited accounts, plus a 14-day money-back guarantee
- Limitation
- Annual billing only; journal access ends after cancellation
Paid from $16.42/moChecked 13 Oct 2026
TraderSync
Trading journal
Trading journal with P/L reports, an AI assistant, plain-English AI backtests and replay
- Strength
- iOS journal with AI backtests from plain English and bar-by-bar market replay
- Limitation
- Web prices, trial and plan limits unverified: the site blocked automated reading
Paid from $15/mo (one region)Checked 13 Oct 2026
TradesViz
Trading journal
Journal and analytics with a public CSV schema, simulator, backtester and read-only API
- Strength
- Free stocks plan; public CSV schema with stop_loss and profit_target columns
- Limitation
- No refunds; free plan is stocks only with one account and no API
Free plan · paid from $14.99/moChecked 13 Oct 2026
TradeZella
Trading journal
Web trading journal with broker sync, generic CSV, backtesting, replay and AI review
- Strength
- Generic CSV with execution and trade-history templates, plus broker sync and file upload
- Limitation
- No free plan or trial; no full backup and exported CSV cannot be re-imported
Paid from $26/moChecked 13 Oct 2026
No tool matches all of these filters.
Open the full Trading Tools Explorer Compare any two or three tools
Side-by-side comparisons
Pairs that traders often weigh against each other, written from documented differences.
What the planner does differently
Also available as focused tools: the forex lot size calculator and the forex profit calculator. Full formulas are in the methodology.
Costs inside the size
Spread, commission, slippage and swap are part of the budget check, not added afterwards, and the size is rounded down to your broker's lot step.
Hold the risk constant
Move the stop and the position resizes while your budget stays fixed; or hold the size and see the new risk.
Three trade paths
Compare your setup with a wider stop or higher costs; every figure comes from the same calculation.
Losing-streak check
See your balance after a run of losses you choose, at a fixed amount or a percentage of the current balance.
Your plan stays with you
Save it in this browser, copy it, download a CSV or print it. Nothing is sent to TradersDNA.
Example: why costs change the size
With a 10,000 USD account risking 1% (100 USD), a 30-pip EUR/USD stop, 0.5 pip of stop slippage and 7 USD commission per lot round turn: sizing on the price move alone gives 0.33 lots, whose modelled loss with costs is 102.96 USD, above the budget. Including the costs gives 0.32 lots and a modelled loss of 99.84 USD.
Questions
Is the modelled loss the most I can lose?
No. A stop order becomes a market order when it is triggered; in fast markets or over a weekend gap the fill can be worse than the stop price. Enter a slippage figure to model a worse fill. The result is a model under your assumptions, not a guarantee.
Where do the exchange rates come from?
When a conversion is needed, the European Central Bank's daily euro reference rates are used and their date is shown. They are reference rates, not prices you can trade; enter your own rate for precision. A missing rate is never assumed to be 1.
Is my data stored?
Your inputs stay in your browser. A plan is stored only when you press Save, and only in this browser. TradersDNA counts anonymous totals such as "calculations made", never balances, prices or notes.