WSN
Free · No signup required · Works on mobile

The Position Size Calculator Built for Every Market

Stop guessing your position size. Whether you trade spot, futures, CFDs or crypto perps — enter your risk, your levels, and get the exact quantity to buy in one click.

Account Balance
$10,000.00
Risk per Trade
1.5%
Entry
$185.40
Stop Loss
$178.20
Take Profit
$198.50
Position Size
20.83 shares
Risk: $150.00 · R:R 1:1.82

…and much more.

You calculate your position size in a spreadsheet  and still aren't sure it's right. You've over-sized a trade and blown past your risk limit. By the time you've done the math, the entry is gone. There's a better way. 

Four Calculators

One Tool, Every Market

Each market has its own rules — contract sizes, tick values, margin requirements, leverage. Instead of forcing one generic formula, we built a dedicated calculator for each asset class so your position size is always accurate.

Coming Soon

Futures Sizer

Tick value, contract size, margin — all factored in automatically.

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Coming Soon

CFD Sizer

Handle lot sizing, pip values, and leverage with built-in broker presets.

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Coming Soon

Crypto Perp Sizer

Perpetual futures with funding rates, cross/isolated margin, and liquidation price.

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Preview

Clean Interface, Fast Decisions

Enter your levels, adjust your risk, and watch the numbers update live. No clutter, no learning curve — just the data you need to place your trade with confidence.

Example shown: Spot Sizer

Powerful Features

Everything You Need to Size a Position

Multi-entry, multi-target, fee-aware — every variable that affects your real risk is built in, so the number you get is the number you can trust.

Multi-Entry Pricing

Average in with multiple entries — weighted or equal — and get your true average price.

Multi Stop-Loss

Split your stop across multiple levels for a staged exit strategy.

Multi Take-Profit

Set multiple TP targets with custom allocation percentages.

Fee Integration

Factor in commissions and fees so your real risk matches your planned risk.

Broker Presets

Save your broker fee structures and apply them in one click.

Works Everywhere

Desktop, tablet, phone — responsive design that works wherever you trade.

Simple Process

3 Steps. 10 Seconds. Done.

No formulas to remember, no spreadsheets to maintain. Pick your market, enter your levels, and let the calculator handle the math.

01

Pick Your Market

Choose between Spot, Futures, CFD, or Crypto Perp calculators.

02

Set Your Risk & Levels

Enter your account balance, risk percentage, entry, stop-loss and take-profit.

03

Get Your Size

Instantly see your exact position size, risk amount, and reward-to-risk ratio.

Use Cases

Built for Every Trading Style

Whether you hold for weeks or close in seconds, proper position sizing keeps your risk consistent. See how traders like you use the tool.

Swing Trading

Hold positions for days to weeks. Set wider stops without blowing your risk budget — the sizer adjusts quantity to match your tolerance.

Why Switch

Before vs After

Spreadsheets are slow, error-prone, and ignore fees. Here's how every part of your sizing workflow improves when you switch to a dedicated calculator.

Before
After
Speed
Minutes per calculation
10 seconds flat
Accuracy
Spreadsheet errors & typos
Precise every time
Risk control
Approximate, often exceeded
Exact to the dollar
Multi-entry
Manual weighted average
Built-in calculator
Fee impact
Usually forgotten
Automatically factored in
Device
Desktop spreadsheet only
Phone, tablet, desktop

Social Proof

Trusted by Traders

0+
Calculations Made
0+
Active Traders
0
Markets Covered

I used to eyeball my position sizes and it cost me more than I'd like to admit. This tool finally gave me a consistent, disciplined approach to risk management.

Marcus T.
Forex trader

Simple, fast, and exactly what I needed. I run every trade through this calculator now — it takes 10 seconds and saves me from impulsive oversizing.

Sarah K.
Swing trader

As someone who trades both crypto and indices, having one tool that handles all my position sizing across markets is a game changer. Highly recommend it.

David R.
Multi-asset trader

FAQ

Frequently Asked Questions

Everything you should know about position sizing, risk management, and how this calculator works — before you place your next trade.

Yes. The core position sizer is completely free with no signup required. You can start calculating immediately. Premium features like saved broker presets may require a free account in the future.
Currently the Spot Sizer is live, supporting stocks, ETFs, and crypto spot markets. Futures, CFD, and Crypto Perpetual calculators are coming soon.
You set your account balance and risk percentage (e.g. 1.5%). The calculator determines the exact number of shares/units to buy so that if your stop-loss is hit, you lose exactly that dollar amount — no more.
Yes. You can set multiple entry prices (with custom weights), multiple stop-loss levels, and multiple take-profit targets. The calculator computes a weighted average and adjusts sizing accordingly.
Yes. You can input your broker commission structure and the calculator will factor fees into the position size so your actual risk stays within your planned limit.
Absolutely. The interface is fully responsive and works on any device — phone, tablet, or desktop. No app download required.
No. You can use the calculator immediately without signing up. Creating a free account will let you save broker presets and access your settings across devices.

Get Started

Ready to Size Your Next Trade?

Free. No signup. Takes 10 seconds.