> ## Documentation Index
> Fetch the complete documentation index at: https://docs.fincept.in/llms.txt
> Use this file to discover all available pages before exploring further.

# Interest-rate maths and currencies

> Converting interest rates between simple, compounded and continuous conventions, frequencies and day counts; compound and discount factors; implied rates; currency facts, roundings and conversion through your exchange rates.

Toolset `pricing_rates`: 2 tools.

| Tool | What it does | Notes |
| - | - | - |
| `pricing_interest_rate` | Interest-rate arithmetic over a period (dates or a year fraction): the compound and discount factor of a rate under its compounding, frequency and day count, and the equivalent rate under other conventions (continuous, simple, compounded at any frequency, simple-then-compounded, other day counts), or the rate implied by a growth factor. | |
| `pricing_currency` | Currency facts (name, ISO code and number, symbol, minor unit), rounding of amounts to a currency's minor unit or a chosen rounding, and conversion of amounts into a target currency through the exchange rates you give: a direct or inverse quote, or a chain through a common currency (EUR->USD->JPY). | |

Inputs, limits and outputs are described in [Fincept Pricing](/guides/fincept-pricing). Full schemas: `fincept_describe_tool`.


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