📈 Futures Position Size Calculator

1What are futures contracts?

A futures contract is a standardized agreement to buy or sell a specific asset at a predetermined price on a future date. Unlike stocks, you don't own the underlying asset — you're trading a contract that tracks its price.

Futures trade on regulated exchanges (CME Group for most US instruments) with standardized contract sizes, tick values, and expiration dates. This standardization is what makes the position size calculation straightforward — each contract has a fixed dollar value per tick, regardless of price.

Futures contracts expire quarterly (March, June, September, December for equity index futures). Before expiration, traders typically "roll" to the next contract to maintain their position. Most retail traders never take physical delivery — they close or roll before expiration.

2Tick size and tick value explained

Every futures contract has two key specifications that determine your risk per contract:

Tick size is the minimum price increment the contract can move. For MNQ (Micro E-mini Nasdaq 100), the tick size is 0.25 index points. The contract cannot move in increments smaller than this.

Tick value is the dollar profit or loss for each one-tick move. For MNQ, each tick is worth $0.50. For NQ (the full-size E-mini Nasdaq), each tick is worth $5.00 — exactly 10x more, since NQ is 10x the size of MNQ.

Your risk per contract is simply: Stop loss in ticks × Tick value = Dollar risk per contract. If you place a 10-tick stop on MNQ, you risk $5.00 per contract (10 × $0.50). The same 10-tick stop on NQ risks $50.00 (10 × $5.00).

This is why knowing the exact tick value for your instrument is critical before trading. The calculator auto-fills tick values for all listed instruments, but always verify with your broker — values rarely change but it's good practice.

3Tick value reference table

Here's a complete reference for the most commonly traded futures instruments. All values are in USD and current as of 2026.

4Micro vs. standard contracts

CME Group launched micro futures contracts in 2019, and they've become the go-to instruments for retail traders. A micro contract is exactly 1/10th the size of the corresponding standard E-mini contract.

Why micro contracts matter for position sizing: With a $10,000 account and 1% risk ($100), a 20-tick stop on MES risks $25 per contract (20 × $1.25), meaning you can trade 4 contracts. The same calculation on ES would give you 0.4 contracts — which isn't tradeable since futures don't allow fractional contracts. Micros solve this problem.

For accounts under $25,000, micro contracts are almost always the right choice. They let you properly size positions, scale in and out, and practice the mechanics of futures trading without needing a large account.

Standard E-mini contracts (ES, NQ, YM, RTY) are better suited for accounts of $50,000+ where the larger position sizes make economic sense relative to commissions.

5Margin explained

Futures margin is not a loan fee like stock margin — it's a performance bond. Your broker holds it as collateral while your trade is open, and returns it when you close the position.

There are two types of margin:

• Initial margin: The amount required to open a position. For MNQ, this is typically around $200–$400 depending on your broker. For NQ, it's around $16,000–$20,000.
• Maintenance margin: The minimum balance you must maintain while the position is open. If your account falls below this, you receive a margin call and must deposit more funds or close positions.

Many prop firms and retail brokers offer intraday margin rates — reduced margin requirements for positions held during trading hours only. These can be as low as $40 per MNQ contract. However, using intraday margin to trade more contracts than your risk management allows is a fast path to large losses.

6How many contracts to trade

The calculator gives you an exact number, but a few practical considerations apply:

Always round down to whole contracts. Futures cannot be traded in fractions. If the calculation gives 2.7 contracts, trade 2. This keeps your actual risk slightly below your target, which is always preferable to being over.

Start with 1 contract. Even if your account size and risk rules allow for 3 or 4 contracts, there's real value in trading single contracts while you're learning an instrument. The mechanics of entry, management, and exit are the same regardless of size — master them first.

Scale up gradually. Once you're consistently profitable trading 1 contract, move to 2. This gradual scaling lets you experience the psychological difference between sizes without a sudden jump in dollar risk.

Consider volatility regimes. During high-volatility events (Fed announcements, earnings reports, geopolitical news), reducing position size by 50% is a common professional practice. Your stop placement becomes less reliable in volatile conditions.

7Common mistakes

• Using intraday margin to justify large positions. A $500 account that can "afford" 5 MNQ contracts on $100 intraday margin is still a $500 account. One bad trade can wipe it.
• Confusing points with ticks. NQ moves in 0.25-point ticks. A 10-point stop is 40 ticks — not 10. Always convert to ticks before entering them in the calculator.
• Not accounting for commissions. At $5 round-trip per MNQ contract, commissions on 10 trades/day add up to $50 — a significant cost relative to a small account. Factor this into your expected return.
• Trading correlated instruments simultaneously. MNQ and MES both track US equity indices and move together. Being long both simultaneously essentially doubles your market exposure.
• Holding through news events without adjusting size. FOMC meetings, CPI releases, and non-farm payrolls create gaps and extreme volatility. Either close before the event or reduce to minimum size.

8Frequently asked questions