Forex Calculators: Free Position Size, Pip Value & Grid

Five free, client-side calculators — nothing you type leaves your browser, and none of them fetches a live market rate. For pairs that need one (JPY crosses, USD/CAD, USD/CHF, EUR/GBP), you supply the current rate yourself, the same way the worked examples in our guides do.

Quick Answer

Five calculators, five formulas. The position-size calculator turns account balance, risk percentage, and stop distance into a lot size using Lots = (Balance × Risk %) / (Stop in pips × Pip value per lot). The pip-value calculator works out what one pip is worth for your pair and lot size using pip size × contract size × lots, converted into US dollars at a rate you enter. The grid-spacing calculator turns an ATR reading into spacing with spacing = ATR value × ATR multiplier, floored at a minimum you set, and adds a guide to how many grid levels per side your equity can fund. The grid blow-up simulator applies the rule-based grid blueprint’s per-level sizing formula to a spacing, lot size, multiplier, cap, and hypothetical adverse move you choose, and shows the per-level floating loss. The drawdown-recovery calculator turns a drawdown percentage into the gain required to break even using gain = drawdown / (1 − drawdown), plus months to recover at a monthly return you enter. All five run entirely in your browser, set no cookies, and fetch no live rates.

Why build calculators around numbers you type in rather than a live feed? Two reasons. First, privacy: a calculator that phones home with your account balance and risk settings is collecting exactly the data a trading site should not collect. Second, understanding: when you look up the current rate yourself and watch how the result changes as you vary one input at a time, the arithmetic stops being a black box. Each tool page shows the full formula it applies and works through a numeric example by hand, so you can verify every output on paper before you trust it with real position sizing.

All five calculators run entirely as plain JavaScript on the page — no accounts, no cookies set by the tools, no data collection, and they work the same whether you trade with our EAs, another system, or manually. They deliberately leave the final decision to you: a position-size result is an upper bound derived from the risk percentage you chose, not a recommendation, and none of the outputs constitutes investment advice.

• Position-Size Calculator — turn account balance, risk %, and stop-loss distance into a lot size
• Pip-Value Calculator — check what a pip is actually worth for your pair and lot size before you size a trade
• Grid Spacing Calculator — turn an ATR reading into recommended grid spacing, plus a grid-levels guide sized to your equity
• Grid Blow-Up Simulator — see a grid ladder’s per-level floating loss under a hypothetical adverse move, fixed lot vs. a lot multiplier
• Drawdown Recovery Calculator — the gain required to break even from a drawdown, plus months to recover at a monthly return you enter

The position-size and pip-value tools are also embedded inline in the risk management guide and lot sizes explained; the grid-spacing tool applies the formulas from the rule-based grid blueprint and dynamic grid trading guide; the grid blow-up simulator generalizes the same blueprint’s per-level sizing rule, and appears alongside why grid EAs blow up and grid trading vs martingale; the drawdown-recovery calculator applies the same formula charted in the risk management guide’s Math of Ruin section. These standalone pages carry the same calculators plus the full explanation of the formulas behind them.