Loan-to-Value Ratio Calculator

Calculate your loan-to-value (LTV) ratio for mortgages and loans. Understand your equity and risk level.

This calculator computes your Loan-to-Value (LTV) ratio: the loan amount divided by the property's value, expressed as a percentage (line 7, ltv = loanAmount / propertyValue times 100 whenever Property Value is positive). At the defaults — a $200,000 loan against a $250,000 property — LTV comes out to exactly 80%. Loan Amount and Property Value move the ratio by almost identical amounts across a ±10% probe, about 20.0% and 20.2% of the base ratio respectively, because Property Value sits in the ratio's denominator: shrinking or growing a denominator by a fixed proportion produces a marginally larger percentage swing than the same proportional change applied to the numerator, Loan Amount. In the percentage-point terms LTV is actually reported in, a one-sided 10% increase in Loan Amount alone moves the ratio from 80% up to 88%, and a 10% decrease moves it down to 72% — about 8 percentage points either way, not 20; the 20%-and-20.2% figures above describe the two-sided swing as a share of the base ratio, not a count of percentage points. Equity, Down Payment, Equity Percentage, and Down Payment % are not four independently computed figures — lines 10 and 11 alias Down Payment directly to Equity and Down Payment % to Equity Percentage, so this calculator treats "down payment" as current equity rather than a historical purchase contribution, which is why it works equally well for a refinance or a PMI-removal check as for an original home purchase. Risk Level is a direct read of LTV against three fixed cutoffs (lines 15-17): above 90% is "Very High," above 80% is "High," above 70% is "Moderate," and everything else is "Low." Because those tests use strict greater-than comparisons, a ratio that lands exactly on 80% — as the calculator's own defaults do — misses the "High" bracket and reports "Moderate" instead. This calculator does not account for private mortgage insurance cost, closing costs, appraisal accuracy, or the loan's original purchase date; it reports only the arithmetic ratio and a label built from it.