0DTE Options Calculator
0DTE (zero days to expiration) options expire on the same day they're traded. They're characterized by rapid time decay, high gamma, and extreme sensitivity to price movements.
0DTE trading has exploded in popularity, particularly on SPX, SPY, and QQQ which offer daily expirations. These options can produce significant gains or losses in minutes.
This calculator helps you visualize 0DTE positions, understand the accelerated theta decay, and analyze risk/reward for same-day trades.
Important Considerations for 0DTE Trading
- 0DTE options are extremely sensitive to price changes (high gamma)
- Time decay accelerates dramatically in the final hours
- Wide bid-ask spreads can significantly impact fills
- American-style equity/ETF shorts can be assigned early. European-style SPX/SPXW options cannot; check the exact series and settlement procedure.
Underlyings with Daily Expirations
S&P 500 Index options - daily expirations
S&P 500 ETF - daily expirations
Nasdaq-100 ETF - daily expirations
Russell 2000 ETF - certain days
0DTE Trading with OptionsCalc
Rapid Theta Decay
Visualize how time decay accelerates dramatically on expiration day, especially in the final hours.
High Gamma Sensitivity
See how near-ATM options move almost dollar-for-dollar with the underlying on 0DTE.
Multi-Leg Strategies
Build iron condors, butterflies, and spreads for 0DTE with full P/L visualization.
Frequently Asked Questions
0DTE stands for "zero days to expiration" - options that expire on the same day they're traded. These are used for short-term directional bets or to capture rapid theta decay on the final day.
Ready to analyze 0DTE options?
OptionsCalc helps you visualize the unique characteristics of same-day expiration trades. Free to use, no account required.
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