Loan Amortization Schedule (Monthly, Bi-Weekly, Weekly)
Generate full loan amortization schedules — monthly payment, principal/interest split, running balance, payoff date, and interest savings from extra payments. Standard amortization formula with monthly, bi-weekly, and weekly frequencies. Year-by-year summary for long loans. Export as text schedule or CSV. 17 extra features: 3 payment frequencies, monthly payment formula, per-payment interest calculator, per-payment principal calculator, balance tracker, extra-payment applier, total interest calculator, total paid calculator, payoff date estimator, text schedule renderer, CSV export, copy + download .txt + CSV, history (localStorage, last 20), shareable URL, summary stats, interest savings calculator (with vs without extra payment), year-by-year summary. 100% client-side.
Generate full loan amortization schedules — monthly payment, principal/interest split, running balance, payoff date, and interest savings from extra payments. Standard amortization formula with monthly, bi-weekly, and weekly frequencies. Year-by-year summary for long loans. Export as text schedule or CSV. 17 extra features: 3 payment frequencies, monthly payment formula, per-payment interest calculator, per-payment principal calculator, balance tracker, extra-payment applier, total interest calculator, total paid calculator, payoff date estimator, text schedule renderer, CSV export, copy + download .txt + CSV, history (localStorage, last 20), shareable URL, summary stats, interest savings calculator (with vs without extra payment), year-by-year summary. 100% client-side. Everything runs locally in your browser — your data never leaves your device.
How to use
- Enter your input in the tool above.
- Adjust any options to your preference.
- Use the Copy or Download buttons to save the result.
- Everything happens locally — your data never leaves your browser.