How do I measure how deep a spring or upthrust penetrated the trading range?

Enter the trading range high and low along with the extreme price the spring or upthrust reached. The calculator subtracts the range boundary from the extreme to get the penetration in dollars, then divides by the range width to get it as a percent.

How does the reclaim check work?

If you enter a reclaim close price, the calculator checks whether it sits back on the correct side of the boundary the extreme broke: above the range low for a spring, below the range high for an upthrust.

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How deep was the spring or upthrust, and has price reclaimed the range?

The traders who last aren't the ones who never lose. They're the ones who never guess.

Jason Parker, Founder of Trading Habits

Enter the Range and the False Break

Use the high and low of the established trading range, then the extreme price the spring or upthrust reached. Add a reclaim price if a candle has already closed back inside the range.

Your Result

Fill in the range and the extreme on the left and click Calculate to see the penetration depth and reclaim read.

How this is calculated

The trading range is the high and low that price has been contained inside before the spring or upthrust.
Penetration is how far the extreme price traveled past the range boundary it broke: range low minus the extreme for a spring, or the extreme minus range high for an upthrust.
Penetration is also shown as a percent of the range width, so a break can be compared across ranges of different sizes.
The reclaim check looks at whether the price you entered as the reclaim close is back on the correct side of the boundary: above the range low for a spring, below the range high for an upthrust. There is no fixed penetration percentage that makes a test valid or invalid on its own; this tool reports the depth and the reclaim status, it does not grade the setup for you.
This tool only works from the numbers you enter. It does not know whether the reclaim happened on a full candle close or confirm volume on the move, which the setups in the pack this tool pairs with cover separately.

Risk & liability disclaimer: This calculator produces a mathematical estimate based on the numbers you enter. It is not financial advice and does not guarantee any trading outcome. Trading involves risk of loss, and past results do not predict future results. Trading Habits is not a broker-dealer, registered investment adviser, or tax professional, and is not affiliated with any broker, exchange, or data provider. We do not guarantee this tool is error-free or suitable for your situation. Always verify results independently and consult a licensed professional before making any trading or financial decision. You could lose some or all of the capital you trade with.

How deep was the spring or upthrust, and has price reclaimed the range?

Enter the Range and the False Break

Your Result

How this is calculated

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