Volatility Conversion (Lognormal ↔ Normal)
quantlib-pricing
Volatility Conversion (Lognormal ↔ Normal)
Convert between lognormal (Black-Scholes) volatility and normal (Bachelier) volatility. Essential for working across different market conventions.
Conversion Directions:
- lognormal_to_normal: Convert percentage volatility to absolute volatility
- normal_to_lognormal: Convert absolute volatility to percentage volatility
Use Cases:
- Reconcile volatility quotes across different market conventions
- Convert historical lognormal vol for use in normal models
- Compare volatility surfaces built with different assumptions
- Switch between model types while maintaining consistency
Tier: Standard (2 credits/request) [Tier: PRO, Credits: 5]
POST
Volatility Conversion (Lognormal ↔ Normal)
Authorizations
API key for authentication. Get your key at https://api.fincept.in/auth/register
Body
application/json
Input volatility to convert (format depends on direction)
Example:
0.25
Forward price of the underlying asset
Example:
102
Strike price
Example:
105
Time to expiration in years
Example:
1
Direction of volatility conversion
Available options:
lognormal_to_normal, normal_to_lognormal Example:
"lognormal_to_normal"
