THE CALCULATOR LIBRARY
Tools for real decisions.
Free calculators with useful explanations. Choose the question you need answered and adjust the numbers yourself.
Money & finance
Mortgage Calculator with Extra Payments
Estimate mortgage payments, calculate extra-payment interest savings, and download an amortization schedule.
Open calculator ↗Money & finance
Canadian Mortgage Calculator
Monthly Canadian mortgage payments, semi-annual compounding and CMHC planning.
Open calculator ↗Money & finance
Rent vs. Buy Calculator
Compare long-term renting and homeownership using adjustable assumptions.
Open calculator ↗Everyday math
Percentage calculator
Find percentages, changes, and differences in seconds.
Open calculator ↗Money & finance
Loan payment calculator
Estimate monthly payments, total interest, and payoff cost.
Open calculator ↗Home & projects
Area calculator
Calculate floor and rectangular surface area with units.
Open calculator ↗Mortgage decision guides
What extra mortgage payments actually save · 15-year versus 30-year mortgage