Calculateur de Future Value of Savings (Annuity)
Estimate the future value of regular monthly contributions at a fixed annual rate.
Formula and method
This calculator computes Future value directly in your browser without sending data to an external server.
Mathematical formula
- Future value:
(() => { const r=rate ÷ 1200, n=years × 12, p=1+r^(n); return r===0 ? contribution × n : (Number.isFinite(p) ? contribution × ((p-1) ÷ r) : NaN); })()
Variables and parameters
- Monthly contribution (contribution): default value 300.
- Annual rate (rate): default value 6 %.
- Years (years): default value 20.
Some formulas are undefined for certain input combinations (such as division by zero or logarithms of non-positive numbers). In those cases the live tool displays an alert instead of NaN.
Embed this tool
Paste this snippet into your own site or blog post to embed a live, working copy of this tool. It links back to the full page on SpecWhale.
Frequently asked questions
What equation and variables does Future Value of Savings (Annuity) Calculator use?
Future Value of Savings (Annuity) Calculator evaluates outputs such as <strong>Future value</strong> based on inputs including Monthly contribution, Annual rate, Years. Check the Mathematical Method section for the explicit formula.
How can I compare different financial scenarios using Future Value of Savings (Annuity) Calculator?
You can click the "Add to Compare" button after computing your scenario to pin it to your temporary side-by-side Compare Workbench, allowing you to evaluate loan, rate, or interest differences.
What happens if I enter invalid or zero values into Future Value of Savings (Annuity) Calculator?
If an input combination is mathematically undefined (such as division by zero or negative square roots), SpecWhale alerts you gracefully rather than returning invalid NaN outputs.
Are my calculations in Future Value of Savings (Annuity) Calculator saved or private?
All calculations are 100% private and run locally in your Web browser. Your numbers are never uploaded to any server, but can be saved locally to your device or exported as CSV/JSON.
Is Future Value of Savings (Annuity) Calculator free to use?
Yes. Future Value of Savings (Annuity) Calculator is completely free, has no usage limit, and does not require an account, email, or API key.
Does Future Value of Savings (Annuity) Calculator store or upload my data?
No. Future Value of Savings (Annuity) Calculator calculates everything locally in your browser. Nothing you type is sent to a server or stored by SpecWhale.
How accurate is Future Value of Savings (Annuity) Calculator?
Future Value of Savings (Annuity) Calculator uses a standard formula (see the Method section above for the exact expression). For high-stakes financial, medical, or legal decisions, confirm the result with a professional or an authoritative source before relying on it.
Can I embed Future Value of Savings (Annuity) Calculator on my own website?
Yes. Use the "Embed this tool" snippet on this page to add a free, working copy of Future Value of Savings (Annuity) Calculator to your own blog post or page.