## Calculator

## Formula

N = [ – log ( 1 – [ ( r*A ) / P ] ) ] / ( log (1+r) )

**A** = Loan Amount;
**P** = Payment Amount;
**r** = Rate of Interest (compounded);
**N** = Number of Payments.

**Rate of Interest Compounded is:**

- Monthly:
** r = i / 1200**
- Quarterly:
**r = i / 400**
- Half yearly:
**r = i / 200**
- Yearly:
**r = i / 100**