Position Size Calculator for Crypto and Futures

Know your position size, your risk and your P&L before you enter the trade. A fast, focused calculator for crypto, futures and forex traders. No account, no login, no clutter — just the numbers you need at the moment you need them.

Why a dedicated sizing calculator

Position sizing is arithmetic, but it's arithmetic people get wrong under pressure — in the seconds between spotting a setup and placing an order, with leverage and stop distance and account risk all needing to line up correctly. A general-purpose calculator app doesn't know the difference between a stop-loss price and a stop distance percentage, or that a short trade's stop sits above entry instead of below it. This one does, because it's built for exactly this calculation and nothing else.

It works the same way whether you're sizing a leveraged crypto perpetual, a futures contract, or a forex position — the underlying maths is identical, and the app does it in seconds, entirely on your device.

What's inside

• Position size calculator Work in price mode (entry and stop loss prices) or percentage mode (stop distance %) — risk amount, position size and stop distance calculated instantly, with a risk/reward ratio shown as a visual bar
• Margin and leverage Margin required at your chosen leverage, plus units and quantity once an entry price is set
• P&L preview See profit and loss in dollars and percent at both your stop loss and take profit, with direction-aware validation and return on margin when leverage is used
• Built for speed Save calculations and reuse them with one tap; recent calculations are kept on your device
• Works offline No network needed to calculate anything
• Private by design Nothing you enter leaves your device — no account, no cloud, no analytics, no tracking

For crypto, futures and forex

Whether you're sizing a leveraged perpetual, a futures contract or a forex position, the maths is the same and this app does it in seconds. It's part of the FuturesEdge ecosystem — once you're logging trades regularly, the FuturesEdge Crypto Journal carries the same sizing tool built into a full performance dashboard.

Screenshots

Frequently asked questions

Does this calculator work offline?

Yes — it works entirely offline. No network connection is needed to run any calculation.

Can I size both long and short trades?

Yes — direction-aware validation means an invalid stop for the direction you've chosen is flagged instead of returning a nonsense result.

Does it account for leverage and margin?

Yes — it calculates the margin required at your chosen leverage, along with return on margin (ROM).

Is my data stored anywhere online?

No. Nothing you enter leaves your device — no account, no cloud, no analytics, no tracking. Recent calculations are kept on-device only, and uninstalling removes everything.

This app is a calculation tool for educational purposes. It does not provide financial, investment or trading advice. Trading involves risk.