Propulsion Block Calculator
Identify propulsion blocks (order blocks within FVGs) for high-probability ICT trade entries. Enter values for instant results with step-by-step formulas.
Calculator
Adjust values & calculateOrder Block Range
Fair Value Gap Range
Formula
The propulsion block is the intersection zone where the Order Block and Fair Value Gap overlap. The overlap high is the lower of the two highs, and the overlap low is the higher of the two lows. This zone represents concentrated institutional interest within a price inefficiency.
Last reviewed: December 2025
Worked Examples
Example 1: Bullish Propulsion Block on EUR/USD
Example 2: Bearish Propulsion Block on GBP/USD
Background & Theory
The Propulsion Block Calculator applies the following established principles and formulas. Foreign exchange markets facilitate the conversion of one currency into another and serve as the largest and most liquid financial markets in the world, with daily turnover exceeding seven trillion US dollars. Exchange rates are quoted as currency pairs, expressing the price of one unit of a base currency in terms of a quote currency. For example, a EUR/USD rate of 1.0850 means one euro buys 1.0850 US dollars. The smallest standardized price movement in most pairs is the pip, typically the fourth decimal place, with a value of 0.0001 per unit for USD-denominated pairs. The bid price is the rate at which a dealer will buy the base currency, while the ask price is the rate at which it will sell. The spread between bid and ask represents the dealer's compensation and varies with liquidity and volatility. Leverage amplifies both gains and losses by allowing traders to control positions larger than their deposited margin. A 100:1 leverage ratio means a one-percent adverse move eliminates the entire margin, making position sizing and risk management critical. Two parity conditions from international economics anchor exchange rate theory. Purchasing Power Parity (PPP) holds that exchange rates should adjust over time so that identical goods trade at equivalent prices across countries: S = P_d / P_f, where S is the spot rate and P_d and P_f are domestic and foreign price levels. PPP performs well over long horizons but poorly in the short run due to trade barriers, non-tradable goods, and capital flows. Covered Interest Rate Parity (CIRP) is a near-arbitrage condition stating that forward exchange rate premiums or discounts exactly offset interest rate differentials between two currencies: F/S = (1 + r_d) / (1 + r_f). Deviations from CIRP create riskless arbitrage opportunities that traders rapidly eliminate. Uncovered Interest Rate Parity posits that high-yielding currencies should depreciate to offset their interest advantage, though empirical evidence is mixed and the carry trade — borrowing in low-rate currencies to invest in high-rate ones — has generated persistent returns.
History
The history behind the Propulsion Block Calculator traces back through the following developments. For much of the nineteenth century and early twentieth century, the international monetary system operated under the classical gold standard, under which each participating currency was fixed to a defined weight of gold, making bilateral exchange rates effectively constant. The system provided price stability and facilitated global trade but constrained governments' ability to respond to economic downturns. World War One shattered the gold standard as nations suspended convertibility to finance wartime expenditures. The interwar period saw attempts to restore gold convertibility, most notably the British return to the gold standard in 1925 at the pre-war parity, a decision criticized by John Maynard Keynes as deflationary. The Great Depression forced widespread currency devaluations and the effective collapse of the international gold standard by the early 1930s. The Bretton Woods Conference of July 1944 established a new order in which member currencies were pegged to the US dollar, while the dollar alone was convertible into gold at 35 dollars per troy ounce. The International Monetary Fund and World Bank were created at the same conference to oversee the system. Bretton Woods delivered exchange rate stability during the postwar growth era but came under strain as US deficits and European dollar accumulation outpaced American gold reserves. On August 15, 1971, President Nixon announced the suspension of dollar-gold convertibility — the so-called Nixon Shock — effectively ending the Bretton Woods system. By 1973, major currencies had transitioned to floating exchange rates determined by market supply and demand, a regime that has persisted. On September 16, 1992, hedge fund manager George Soros shorted the British pound against the European Exchange Rate Mechanism constraints, forcing the UK's withdrawal in what became known as Black Wednesday. Electronic trading platforms emerged in the 1990s and 2000s, replacing voice-brokered interbank markets and dramatically reducing transaction costs for institutional and retail participants alike.
Frequently Asked Questions
Formula
Propulsion Block = Overlap(OB, FVG) where Overlap High = min(OB High, FVG High), Overlap Low = max(OB Low, FVG Low)
The propulsion block is the intersection zone where the Order Block and Fair Value Gap overlap. The overlap high is the lower of the two highs, and the overlap low is the higher of the two lows. This zone represents concentrated institutional interest within a price inefficiency.
Worked Examples
Example 1: Bullish Propulsion Block on EUR/USD
Problem: An Order Block spans 1.0880-1.0900 and a Fair Value Gap spans 1.0870-1.0910 on the 1-hour chart. Calculate the propulsion block and trading levels.
Solution: OB Range: 1.0880 - 1.0900 (20 pips)\nFVG Range: 1.0870 - 1.0910 (40 pips)\nOverlap (Propulsion Block): max(1.0880, 1.0870) to min(1.0900, 1.0910) = 1.0880 - 1.0900\nPropulsion Block Size: 20 pips\nOB Overlap: 100% (entire OB within FVG)\nMidpoint: 1.0890\nOptimal Entry: 1.0880 (block low)\nStop Loss: 1.0870 (10 pips below)\nTP1 (2R): 1.0900 + 0.0020 = 1.0920
Result: Propulsion Block: 1.0880-1.0900 (20 pips) | 100% OB overlap | Entry: 1.0880 | SL: 1.0870 | TP1: 1.0920
Example 2: Bearish Propulsion Block on GBP/USD
Problem: A bearish OB spans 1.2740-1.2760 and an FVG spans 1.2730-1.2755. Current price is 1.2720. Calculate the propulsion block.
Solution: OB Range: 1.2740 - 1.2760 (20 pips)\nFVG Range: 1.2730 - 1.2755 (25 pips)\nOverlap: max(1.2740, 1.2730) to min(1.2760, 1.2755) = 1.2740 - 1.2755\nPropulsion Block Size: 15 pips\nOB Overlap: 15/20 = 75%\nFVG Overlap: 15/25 = 60%\nMidpoint: 1.27475\nOptimal Short Entry: 1.2755 (block high)\nStop Loss: 1.27625 (7.5 pips above)
Result: Propulsion Block: 1.2740-1.2755 (15 pips) | 75% OB overlap | Short Entry: 1.2755 | SL: 1.27625
Frequently Asked Questions
What is a Propulsion Block in ICT trading methodology?
A Propulsion Block is an advanced ICT concept that occurs when an Order Block (OB) forms within a Fair Value Gap (FVG). This confluence creates a particularly powerful institutional reference point because it combines two significant market structure elements. The order block represents an area of concentrated institutional buying or selling, while the fair value gap represents a price inefficiency that algorithms tend to revisit. When these two elements overlap, the resulting propulsion block acts as a high-probability reaction zone that can propel price strongly in the anticipated direction. The term propulsion refers to the forceful price movement expected when this level is tested.
How do you identify a valid Propulsion Block on a price chart?
To identify a valid Propulsion Block, you need to find an area where an Order Block and a Fair Value Gap overlap on the same timeframe. First, locate a Fair Value Gap by finding three consecutive candles where candle one and candle three do not overlap. Second, within that same price region, identify an Order Block, which is the last opposing candle before a strong displacement move. The propulsion block is the specific price zone where the OB body intersects with the FVG range. The overlap zone is what matters most. A larger overlap percentage generally indicates a stronger propulsion block, with overlaps of 50% or more considered ideal for high-probability setups.
What makes a Propulsion Block different from a regular Order Block?
While a regular Order Block is simply the last opposing candle before a strong move, a Propulsion Block has the additional qualification of being embedded within a Fair Value Gap. This dual confluence makes propulsion blocks significantly more reliable than standalone order blocks. Regular order blocks may or may not produce reactions because they lack the additional confirmation of being within an inefficiency. Propulsion blocks, however, represent areas where institutional orders were placed within a known price imbalance, making them magnets for algorithmic price delivery. In terms of win rate, many ICT practitioners report that propulsion blocks produce reactions approximately 70-80% of the time versus 50-60% for standalone order blocks.
How should you trade a bullish Propulsion Block setup?
For a bullish Propulsion Block, you expect price to return to the overlap zone and bounce higher. The optimal entry is at or near the lower boundary of the propulsion block, which represents the most discounted price within the zone. Place your stop loss below the propulsion block low, typically 50-100% of the block size beyond the bottom edge to allow for slight wicks. The first take-profit target should be at minimum 2:1 risk-to-reward, often at the next opposing liquidity level such as a swing high or previous session high. Trail the stop to break-even once the first target is reached, and let the remaining position run toward the 3:1 and 5:1 extensions for maximum profit capture.
What timeframes work best for Propulsion Block analysis?
Propulsion Blocks are most effective on the 15-minute to 4-hour timeframes for forex trading. The 1-hour timeframe is considered the sweet spot by many ICT traders because it provides enough clarity to identify both the FVG and OB components while filtering out noise present on lower timeframes. For entry refinement, once a propulsion block is identified on the 1-hour chart, dropping to the 5-minute or 15-minute chart for precise entry timing is common practice. Higher timeframes (daily, weekly) produce propulsion blocks that carry more significance but form less frequently. For day trading, focus on 15-minute to 1-hour propulsion blocks. For swing trading, the 4-hour and daily charts provide the most reliable setups.
Can multiple Propulsion Blocks stack at the same price level?
Yes, and when multiple propulsion blocks from different timeframes converge at the same price level, it creates an extremely high-probability reaction zone. For example, a 1-hour propulsion block that aligns with a 4-hour propulsion block at the same price area provides multi-timeframe confluence that institutional algorithms respect. Additionally, a propulsion block can form within an older propulsion block, creating a nested structure that intensifies the institutional significance of the level. Traders who identify these stacked or nested propulsion blocks should prioritize them over single-timeframe setups and consider using larger position sizes when risk management allows, as the reaction probability is substantially higher.
References
Reviewed by Daniel Agrici, Founder & Lead Developer · Editorial policy