The futures contract calculator above takes a contract specification and a pair of prices and produces the numbers that actually describe the position: the notional value being controlled, the value of one tick, the margin the exchange and broker require, the leverage that implies, the profit or loss after commissions, and the adverse price move that would take the account down to maintenance margin.
Arb Digital builds free tools that make the size of an exposure visible rather than the size of a deposit. Every figure here is one you supply, taken from a contract specification and a broker's schedule. The page publishes no prices, no margin rates and no contract details of its own, recommends no contract or market, and holds no view on any trade.
What This Futures Contract Calculator Does
A futures contract is an agreement to buy or sell a standardised quantity of something at a fixed price on a future date. The Commodity Futures Trading Commission's basics of futures trading sets out the structure and states plainly that speculating in commodity futures and options is a volatile, complex and risky venture that is rarely appropriate for individual investors, with many losing their entire investment.
The arithmetic that matters starts with contract size. A futures contract does not represent one unit of anything; it represents a specified quantity, and that quantity multiplied by the price is the notional value the holder is exposed to. The deposit required to hold it is a small fraction of that notional, which is where the leverage comes from and where most of the misunderstanding comes from too.
Tick value is the second piece. Exchanges specify a minimum price fluctuation, and the money value of that fluctuation is the tick size multiplied by the contract size. Knowing it converts a price chart into money: a market that moves fifty ticks has moved a specific number of dollars per contract, and that figure is the one that decides whether a position is survivable.
How to Use It
- Take the contract size and tick size from the exchange specification. They are published for every listed contract and they differ between contracts on the same underlying.
- Enter margin figures from your broker. Exchanges set minimums, brokers frequently require more, and both can change with volatility at short notice.
- Choose the side. A short position profits from a fall, and the adverse direction reverses accordingly.
- Include commissions. They are charged on entry and exit, and on a small number of ticks they are not negligible.
- Read the adverse move figure. That is how far the market can go against the position before more money is demanded.
The Formula: How Futures Position Numbers Are Calculated
Notional value is contracts × contract size × price. Tick value is tick size × contract size. Profit or loss is side × (exit − entry) × contract size × contracts, less commissions of 2 × contracts × rate. Effective leverage is notional divided by total initial margin. The adverse move to maintenance is (initial margin − maintenance margin) ÷ contract size in price terms, which is the same figure whatever number of contracts is held.
Work the defaults. Three contracts of 1,000 units each at an entry of 75.00 is a notional of 225,000. A tick size of 0.01 on 1,000 units gives a tick value of 10.00. Moving from 75.00 to 78.50 is 3.50, which is 350 ticks, so the gain is 3,500 per contract and 10,500 across three. Commissions of 2.50 per contract per side cost 15.00 in total, leaving a net of 10,485.
Initial margin of 6,000 per contract is 18,000 in total, so the effective leverage is 225,000 ÷ 18,000 = 12.5 times, and the net result is a 58.25 per cent return on the margin posted from a 4.67 per cent move in the price. Run it the other way and a 4.67 per cent adverse move destroys the same proportion of the deposit. The cushion before a margin call is (6,000 − 5,000) ÷ 1,000 = 1.00 in price, or 100 ticks, taking the market to 74.00.
Why Margin Is Not the Size of the Risk
This is the single most important thing on the page. The CFTC's glossary of futures terms defines initial margin as customers' funds put up as security for a guarantee of contract fulfilment. It is a performance bond, not a purchase price and not a cap on loss. The position controls the full notional value, and the loss is calculated on that notional, not on the deposit.
The consequence is that losses can exceed the amount deposited. A position with 18,000 of margin against 225,000 of notional loses the entire deposit on an eight per cent adverse move, and if the market moves further — particularly if it gaps overnight through the level where a stop would have worked — the account holder owes the difference. A futures account can go negative, and the obligation to make it good is real.
Margin requirements also move. Clearing houses raise them when volatility rises, which is precisely when positions are already under pressure, and a requirement that was comfortable when the trade was opened can be uncomfortable a week later without the position changing at all. Our margin call calculator covers the equity-market version of the same mechanic, and the margin trading calculator the leveraged-spot version.
How Margin Calls Actually Work
Futures accounts are marked to market daily. At the end of each session the exchange settles gains and losses in cash: profits are credited and losses are debited from the account immediately, rather than accruing on paper until the position is closed. This is the mechanical difference between futures and most other leveraged instruments, and it is why the account balance moves every day whether or not anything is traded.
When daily settlement takes the balance below the maintenance level, the broker issues a margin call. The requirement is normally to restore the account to the full initial margin, not merely back to maintenance, which is a larger sum than most people expect. The call is usually due same day or next day, and if it is not met the broker is entitled to liquidate positions without further discussion.
The practical effect is that a position can be closed at the worst possible moment for reasons entirely unrelated to whether the original view was correct. Being right about direction and wrong about timing is a losing combination in a marked-to-market account. Position sizing is the only lever that reliably changes this, and our position size calculator and risk reward ratio calculator handle that side of the arithmetic.
Contract Specifications Are Not Interchangeable
Two contracts on the same underlying can have completely different economics. A full-size contract and a mini or micro version of it differ in contract size, tick size, tick value and margin, sometimes by a factor of ten and sometimes by a factor of fifty. Reading a tick value from one specification and a contract size from another produces a number that is simply wrong, and the error is invisible because it still looks like money.
Tick size is also not always a decimal. Several interest-rate and grain contracts are quoted in fractions of a point, some in thirty-seconds, some in eighths, and the money value of a minimum fluctuation follows the convention rather than the decimal appearance of the price. This calculator takes tick size as a decimal number, so a fractional convention has to be converted before it is entered.
Expiry adds a further layer that this page does not model. Contracts settle either physically or in cash, they roll into later months at prices that differ from the expiring one, and the difference between the futures price and the spot price changes as expiry approaches. Holding an exposure across several contract months means repeated rolls, each with its own cost, and none of that appears in a single entry-to-exit calculation.
Where This Model Stops
The calculation here is a single position opened at one price and closed at another. It does not model the daily settlement path, so it cannot show a position that was liquidated on the way to a profitable exit. It does not include exchange or clearing fees beyond the commission figure you enter, financing on the margin balance, or the tax treatment of futures gains, which differs by jurisdiction and by the type of contract.
It also treats the two prices as achievable. In a fast market they may not be: slippage between the intended and executed price is a real cost, and it is worst exactly when it matters most. Nor does it consider whether the position is a hedge against something else, in which case the profit or loss should be read against the exposure it offsets rather than on its own — our hedge ratio calculator covers that framing directly.
Arb Digital builds free tools like this one because useful pages earn attention. If you want tools, calculators or content built for your own audience, we can help.
Browse All Free Tools Talk to Arb DigitalCommon Mistakes to Avoid
- Treating margin as the amount at risk — the exposure is the notional value, and losses are calculated on that.
- Mixing specifications — full-size, mini and micro contracts have different sizes, ticks and margins, and combining figures from two of them gives nonsense.
- Assuming a stop caps the loss — a market that gaps through the level fills below it, and overnight gaps are common.
- Forgetting that a call restores initial margin — the demand is usually to top back up to initial, not merely to maintenance.
- Ignoring roll costs — holding an exposure past expiry means rolling into a new month at a different price, repeatedly.
Related Free Tools From Arb Digital
Leveraged positions need sizing before they need optimising. The position size calculator works back from an acceptable loss to a size, the risk reward ratio calculator compares the two ends of a trade, and the margin call calculator shows the price at which a leveraged equity position triggers a call.
For adjacent structures, the hedge ratio calculator sizes a futures position against a spot exposure rather than as a directional bet, the options spread calculator covers multi-leg option payoffs at expiry, and the margin trading calculator handles leveraged spot positions.
Frequently Asked Questions
Multiply the contract size by the price to get the notional value of one contract, then multiply by the number of contracts. The contract size is published in the exchange's specification and represents a standardised quantity of the underlying, not a single unit of it.
It is the money value of the smallest price fluctuation the exchange permits, calculated as the tick size multiplied by the contract size. It converts a price move into a dollar amount per contract, which is the figure that decides whether a given adverse move is survivable.
Yes. Margin is a performance deposit, not a cap on loss. The position is exposed to the full notional value, so a sufficiently large adverse move exhausts the deposit and leaves the account holder owing the difference. Overnight gaps can produce exactly that outcome before any stop can be filled.
Initial margin is what must be posted to open the position. Maintenance margin is the lower level the account must stay above. When daily settlement takes the balance below maintenance, a margin call is issued, and it normally requires restoring the account to the full initial margin rather than just to maintenance.
Futures accounts are marked to market at the end of each trading session, and gains or losses are settled in cash immediately rather than accruing until the position is closed. This is why the balance moves daily without any trading, and why a losing position produces real cash demands long before it is exited.
The broker is entitled to close positions to bring the account back within requirements, usually without further consultation and at whatever price is available. A position can therefore be liquidated at the worst point, regardless of whether the original view later proves correct.
No. Contract size, tick size, margin figures and commissions are all inputs you take from the exchange specification and your broker's schedule. The page holds no contract data, publishes no prices or margin rates, and makes no recommendation about any market or contract.
This tool is provided for educational and estimating use only. It is not investment advice and recommends no contract, market or strategy. Futures trading involves substantial risk of loss, leverage magnifies losses beyond the amount deposited, and anyone considering it should read the required risk disclosures and take advice from a qualified financial adviser.
