Strangle Calculator (Options)
This Strangle Options Calculator helps you evaluate long and short strangle trades by computing net premium or credit, breakeven points, maximum loss or profit where applicable, and profit or loss at a specified underlying price. It is designed for rapid scenario analysis and trade rehearsal.
Use the Long Strangle mode to model buying both an out-of-the-money put and call. Use Short Strangle to model selling both options. Enter premiums, strikes, contract count, commissions and a price scenario to see trade outcomes. This tool does not place trades and is for education and planning only.
Governance
Record 3ede6870aaa0 • Reviewed by Fidamen Standards Committee
Buy one out-of-the-money put and one out-of-the-money call with the same expiration. Limited downside equal to net premium paid; upside is effectively unlimited.
Inputs
Results
Max loss (total)
$301.00
Net cost (total)
$301.00
Net cost per share
$3.01
Lower breakeven
91.99
Upper breakeven
108.01
P/L at price scenario
-$301.00
| Output | Value | Unit |
|---|---|---|
| Max loss (total) | $301.00 | USD |
| Net cost (total) | $301.00 | USD |
| Net cost per share | $3.01 | USD |
| Lower breakeven | 91.99 | — |
| Upper breakeven | 108.01 | — |
| P/L at price scenario | -$301.00 | USD |
Visualization
Methodology
Calculations are deterministic arithmetic built from input fields: premiums, strikes, contracts and commissions. Net cost/credit equals the total options premium plus or minus commissions, scaled by contract size. Breakeven points are strike ± net cost or credit per share.
This calculator is not a substitute for professional risk management. For model validation and data handling we follow general guidance from standards bodies: NIST best practices for data integrity and validation, ISO guidance for risk management (ISO 31000), IEEE recommendations for algorithmic transparency, and OSHA principles for operational safety awareness. See citations for links.
Inputs like implied volatility and days to expiry are provided for context and sanity checks; the core payoff, breakeven and net cost/credit computations use explicit cash flows and do not attempt to price options using Black-Scholes or other models unless you use an external pricing routine.
Worked examples
Example 1 — Long strangle: underlying 100, put strike 95, call strike 105, put premium 1.50, call premium 1.50, 1 contract: Net cost = (1.5+1.5)*1*100 + commission; lower breakeven ≈ 95 − (net_cost/100), upper breakeven ≈ 105 + (net_cost/100).
Example 2 — Short strangle: same strikes and premiums: Net credit = (1.5+1.5)*1*100 − commission; maximum profit = net credit; risk is unlimited for uncovered naked positions beyond breakevens.
F.A.Q.
Does this calculator price options using Black‑Scholes?
No. Payoff, breakeven and net premium/credit are computed directly from traded premiums and strikes. This tool does not perform theoretical option pricing unless paired with an external pricing function; implied volatility and days to expiry are provided for user reference and external model inputs.
How is commission handled?
Commission_per_contract is multiplied by the number of contracts to compute total commission which is added to (long) or subtracted from (short) the premium total to produce net cost or net credit.
Can the short strangle lose more than the displayed numbers?
Yes. A short strangle has effectively unlimited downside if uncovered. The calculator shows breakeven points and net credit; unlimited theoretical loss is explained in the methodology. Consider defined-risk alternatives or hedges to limit exposure.
How accurate are the results?
Arithmetic results are exact given the inputs. Model-based estimates (for pricing or Greeks) are approximations and depend on external models and data quality. Follow NIST and ISO best practices for data validation and model governance and consult licensed professionals for trade execution.
Sources & citations
- NIST - National Institute of Standards and Technology — https://www.nist.gov/
- ISO - International Organization for Standardization — https://www.iso.org/
- IEEE - Institute of Electrical and Electronics Engineers — https://www.ieee.org/
- OSHA - Occupational Safety and Health Administration — https://www.osha.gov/
- OCC — Options Clearing Corporation — https://www.theocc.com/
- CBOE — Options Education — https://www.cboe.com/education/
Further resources
Versioning & Change Control
Audit record (versions, QA runs, reviewer sign-off, and evidence).
Record ID: 3ede6870aaa0What changed (latest)
v1.0.0 • 2025-11-19 • MINOR
Initial publication and governance baseline.
Why: Published with reviewed formulas, unit definitions, and UX controls.
Public QA status
PASS — golden 25 + edge 120
Last run: 2026-01-23 • Run: golden-edge-2026-01-23
Versioning & Change Control
Audit record (versions, QA runs, reviewer sign-off, and evidence).
What changed (latest)
v1.0.0 • 2025-11-19 • MINOR
Initial publication and governance baseline.
Why: Published with reviewed formulas, unit definitions, and UX controls.
Public QA status
PASS — golden 25 + edge 120
Last run: 2026-01-23 • Run: golden-edge-2026-01-23
Engine
v1.0.0
Data
Baseline (no external datasets)
Content
v1.0.0
UI
v1.0.0
Governance
Last updated: Nov 19, 2025
Reviewed by: Fidamen Standards Committee (Review board)
Credentials: Internal QA
Risk level: low
Reviewer profile (entity)
Fidamen Standards Committee
Review board
Internal QA
Entity ID: https://fidamen.com/reviewers/fidamen-standards-committee#person
Semantic versioning
- MAJOR: Calculation outputs can change for the same inputs (formula, rounding policy, assumptions).
- MINOR: New features or fields that do not change existing outputs for the same inputs.
- PATCH: Bug fixes, copy edits, or accessibility changes that do not change intended outputs except for previously incorrect cases.
Review protocol
- Verify formulas and unit definitions against primary standards or datasets.
- Run golden-case regression suite and edge-case suite.
- Record reviewer sign-off with credentials and scope.
- Document assumptions, limitations, and jurisdiction applicability.
Assumptions & limitations
- Uses exact unit definitions from the Fidamen conversion library.
- Internal calculations use double precision; display rounding follows the unit's configured decimal places.
- Not a substitute for calibrated instruments in regulated contexts.
- Jurisdiction-specific rules may require official guidance.
Change log
v1.0.0 • 2025-11-19 • MINOR
Initial publication and governance baseline.
Why: Published with reviewed formulas, unit definitions, and UX controls.
Areas: engine, content, ui • Reviewer: Fidamen Standards Committee • Entry ID: 19f3bede8cd9