Every calculator on this page runs on the values you enter, with no connection to a live price feed. Where a formula needs a price, it is a field you can see and change rather than a hidden number.

Risk and capital

Position sizeWorks out how many lots to open from your balance, your risk percentage and your stop distance. It also returns the reward-to-risk ratio and the win rate you would need just to break even.MarginCalculates what your broker holds to open a position and the resulting margin level. It also shows the loss remaining before a margin call and a stop out, a figure other calculators leave out.LeverageSeparates your broker headline leverage from your real exposure — two different figures that are widely conflated. Both appear side by side on one screen.Compounding and drawdown recoveryShows what repeating a fixed percentage gain does to capital, and right beside it the gain required to recover from a drawdown. The two sides are never shown apart.Risk of ruinComputes the probability that capital reaches a ruin threshold from your win rate and risk per trade, using a model sourced to two independent academic references.

Results and costs

Pip valueConverts a one-pip move into cash in your account currency for any instrument. It separates the pip from the fractional pip, the single most common source of error here.Profit and lossComputes a trade result between an entry and an exit price, and separates gross profit from net profit after commission and swap.

Technical analysis

Support and resistanceDerives your next session levels from the previous session data using all five published methods. It accepts the opening price that the DeMark method requires.FibonacciComputes retracement and extension levels using both published constructions, and makes clear that the two give different prices for the same percentage.Gann Square of NineDerives price levels from a square root at fixed angular steps, with a scaling factor that makes it usable on currency pairs. Levels only, with no recommendation of any kind.

How these calculators are built

Every formula on these pages carries at least two independent reference sources, each named, linked and quoted directly. Acceptable sources are official trading-platform documentation, contract specifications from regulated brokers, exchange documentation, established educational references and academic papers. No tool site and no review site was used as a source for any formula.

Where two sources disagreed on a formula, both versions are shown with each attributed to its source and no winner declared. Where it was possible the calculator was designed to cover both with one implementation rather than dropping either, as with the current-period open field in the Woodie method, which produces the close-based formula at its default value and the open-based formula when changed.

And any item for which we found no acceptable source is marked as unverified in place, with no guesswork filling the gap. That includes the pip size for gold, which no reference source publishes; the formula for the loss remaining before a margin call, for which no published industry formula exists; and a risk-of-ruin formula accepting a reward-to-risk ratio other than one to one, which we found in no verifiable reference.

Frequently asked questions

Why do these calculators not fetch prices automatically?

Because they are built to run with no live price feed at all. Where a formula needs a price, it appears as a field you can see and change, pre-filled with a sensible default. The benefit is that you can review an old trade at the rate that applied then, or model a hypothetical rate — neither of which auto-fetching calculators allow.

Where did the formulas come from?

From official trading-platform documentation, contract specifications published by regulated brokers, exchange documentation and established educational references. Each formula carries at least two independent sources, each named, linked and quoted directly. No tool site and no review site was used as a source for any formula.

What happens when sources disagree on a formula?

We publish both versions with each one source and do not pick a winner. This happened in several places, including the third term in Woodie pivot, the Camarilla multipliers and the margin formula. Where it was possible, we designed the calculator so that it covers both versions rather than dropping one.

Do any of these calculators give a buy or sell recommendation?

No, not one. All they do is compute figures from values you supply. During our research we found that Gann Square of Nine calculators on other sites issue entry points, targets and stop losses, some with no risk warning anywhere near them. Ours shows the levels alone, and that is a commitment with no exceptions.

This calculator is an educational tool that returns arithmetic results from the values you enter. It is not financial advice and not a recommendation to buy or sell. Results are estimates and may differ from your broker platform figures because contract specifications, spreads and commissions vary. Trading currencies and CFDs carries risk and can result in the loss of your capital.