# UK Mortgage Calculator and Amortistion Formula

Use the form below to calculate your mortgage repayments:

The repayments are calculated using the following formula:

*P = rC / (1 – (1 +r) ^{-n})*

where:

P = repayment amount

r = interest rate per period

C = Current loan amount

n = number or repayments per year

The interest rate per period is calculated from the APR using this formula:

This is the formula:

*r = (1 + i) ^{1/n} – 1*

where:

i = annual interest eg: 8% is 0.08