Calculator Form
Example Data Table
| Position | Spot Now | Strike | Premium | Expiry Price | Contracts | Size | Total Fees | Profit / Loss |
|---|---|---|---|---|---|---|---|---|
| Long Call | $106.00 | $100.00 | $6.50 | $118.00 | 2 | 100 | $4.00 | $2,296.00 |
| Long Call | $106.00 | $100.00 | $6.50 | $103.00 | 2 | 100 | $4.00 | -$704.00 |
| Short Call | $106.00 | $100.00 | $6.50 | $103.00 | 2 | 100 | $4.00 | $696.00 |
Formula Used
Intrinsic value per share at expiry: max(Underlying Price at Expiry − Strike Price, 0)
Total premium: Premium per Share × Contracts × Contract Size
Total fees: Entry Fee Total + Exit Fee Total
Long call profit: (Intrinsic Value × Contracts × Contract Size) − Total Premium − Total Fees
Short call profit: Total Premium − (Intrinsic Value × Contracts × Contract Size) − Total Fees
Long call breakeven: Strike Price + Premium per Share + (Total Fees ÷ Shares Controlled)
Short call breakeven: Strike Price + Premium per Share − (Total Fees ÷ Shares Controlled)
This calculator evaluates payoff at expiration. It helps compare premiums, strike levels, fees, and contract sizing before a trade decision.
How to Use This Calculator
- Choose whether the trade is a long call or short call.
- Enter the current underlying price for reference metrics.
- Enter the strike price and premium per share.
- Set the expected underlying price at expiration.
- Enter contracts, contract size, and total fees.
- Adjust the graph range and step for scenario analysis.
- Press the calculate button to show the result above the form.
- Use the CSV and PDF buttons to export the summary and scenarios.
FAQs
1. What does this calculator measure?
It measures call option profit or loss at expiration. It includes strike, premium, contracts, contract size, and trading fees in one result.
2. Does it support both buyers and sellers?
Yes. You can switch between long call and short call positions. The formulas adjust automatically for debit and credit exposure.
3. What is breakeven for a long call?
Breakeven is the strike price plus premium per share and fee impact per share. Above that level, the long call becomes profitable at expiration.
4. Why include contract size?
Contract size converts per-share option pricing into total exposure. Many listed call contracts control 100 shares, but custom sizes can also be evaluated.
5. Are fees important in options analysis?
Yes. Fees reduce net profit and slightly change breakeven. Small fees matter more when trading many contracts or low-premium options.
6. Does this calculator use implied volatility pricing?
No. It focuses on payoff at expiration, not theoretical pricing before expiration. It does not calculate Greeks or volatility-based fair value.
7. What does the graph show?
The graph shows how profit or loss changes as the underlying price moves across your selected range. It is useful for scenario planning.
8. Can I use it for trade planning?
Yes. It helps compare possible outcomes before placing a position. Still, market liquidity, assignment risk, and volatility shifts should be reviewed separately.