OptionsProfitCalculator
optionsprofitcalculator.com
Free, no-signup profit and loss calculator for 20+ options strategies, using delayed quotes and Black-Scholes estimates, with an ad-free paid membership.
What it is
OptionsProfitCalculator (also known as opcalc) plots the estimated profit or loss of an options position across stock prices and dates. You pick a strategy, enter a ticker, choose strikes and expiries from the loaded chain and get a colour-coded table and chart with breakevens, maximum profit and loss, and a probability of profit.
The calculators need no account and cover single options, vertical, calendar and diagonal spreads, iron condors, butterflies, straddles, strangles, collars and custom positions of up to eight legs. An Option Finder works the other way round: give it a target price and date and it suggests calls, puts or spreads that would have paid most.
Two things matter before relying on the numbers. Quotes come from third-party sources and are 15 to 30 minutes delayed, and the site says it cannot afford a real-time feed. Estimates use Black-Scholes with the current implied volatility held constant, and exclude commissions and bid-ask slippage, so results can differ sharply from reality around earnings or other volatility events.
A $9.95 a month membership removes ads and adds a rolling calculator, a quick-view comparison of several strategies, a backtester the site describes as covering more than 20 years, and extra custom-strategy legs.
Key features
- Strategy calculators
- Pre-built calculators for 22 named strategies from long calls and covered calls to iron condors, double diagonals and reverse conversions, plus custom 2 to 8 leg positions.
- Profit and loss table and chart
- A grid of estimated value by stock price and date, with a line chart, breakevens, max profit, max loss and a probability of profit.
- Option Finder
- Enter an expected stock price and date and it ranks long or short options and debit or credit spreads by estimated return.
- Probability of profit
- Calculated from a normal distribution based on 30-day implied volatility rather than delta, so it can differ from broker figures.
- Membership tools
- Ad-free use, a rolling calculator for adjustments, a quick-view comparison across strategies and a historical backtester.
Pricing
| Plan | Price | What you get |
|---|---|---|
| Free | $0 | All strategy calculators and the Option Finder, with ads; no signup needed |
| Membership | $9.95/mo | Ad-free, rolling calculator, quick-view strategy comparison, backtester, more custom legs |
The membership page says real-time data is planned as a future upgrade; it is not available today.
Free option: Every strategy calculator and the Option Finder, with delayed quotes and ads, without creating an account.
Checked September 25, 2026 on optionsprofitcalculator.com. Prices change; confirm on the provider's site before you subscribe.
Strengths
- Works immediately with no account, which suits quick what-if checks
- Wide strategy coverage, including calendars, diagonals and custom positions up to eight legs
- The date-by-price grid shows how time decay changes a position, not only the value at expiry
- The FAQ explains its method and its limits openly
Limitations
- Quotes are 15 to 30 minutes delayed; there is no real-time data
- Estimates hold implied volatility constant and ignore commissions and bid-ask slippage
- Positions are not linked to a broker, so live trades must be entered by hand
- The free version shows ads
Good fit for
- Beginners learning how a strategy's payoff changes with price and time
- Traders who want a quick profit and loss check before placing an order
- Comparing strikes or expiries for the same idea
Look elsewhere if
- Active traders who need real-time Greeks and pricing (use a broker platform)
- Modelling volatility changes such as an earnings crush in detail
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OptionsProfitCalculator questions
Is OptionsProfitCalculator free?
Yes. All calculators and the Option Finder are free and need no account. A $9.95 a month membership removes ads and adds extra tools such as a rolling calculator and a backtester.
Is OptionsProfitCalculator data real time?
No. Prices come from third-party sources and are delayed by 15 to 30 minutes.
How does OptionsProfitCalculator estimate option prices?
It uses the Black-Scholes formula with implied volatility calculated from current option prices, held constant across future dates.
Why is its probability of profit different from my broker's?
It calculates probability from a normal distribution based on 30-day implied volatility, while many brokers use delta or spread cost, so the figures differ.
Written from OptionsProfitCalculator's own website and documentation. All Trading Tools lists and compares tools; it does not recommend trades or give financial advice. Sources: optionsprofitcalculator.com, optionsprofitcalculator.com/membership.html, optionsprofitcalculator.com/faq.html.