📈CAGR Calculator
Calculate the compound annual growth rate that takes an initial value to a final value over a given number of years — the standard way to annualize returns.
Worked examples
10,000 → 16,000 in 3 years
GET /api/v1/finance/cagr-calculator?initial=10000&final=16000&years=3
Result: 16.96%
Bitcoin-style run: 20,000 → 69,000 in 18 months
GET /api/v1/finance/cagr-calculator?initial=20000&final=69000&years=1.5
Result: 128.32%
Revenue: 1.2M → 2.1M in 4 years
GET /api/v1/finance/cagr-calculator?initial=1200000&final=2100000&years=4
Result: 15.02%
Machine API (x402)
$0.001 / callThis tool is also a JSON API for AI agents. Requests without payment receive 402 Payment Required plus instructions; agents pay USDC on Base via the x402 protocol — no accounts, no API keys.
GET /api/v1/finance/cagr-calculator?initial=10000&final=16000&years=3 HTTP/1.1
Host: agenttools-hub.vercel.app
→ 402 (payment required, instructions in headers)
→ 200 (after X-PAYMENT header; JSON body below)
{
"tool": "finance/cagr-calculator",
"input": {"initial":10000,"final":16000,"years":3},
"result": { "value": 16.96071, "answer": "16.96%" }
}Agent docs: /llms.txt · OpenAPI spec · integration guide
About this tool
CAGR smooths a multi-year journey into one equivalent annual rate: the rate that, applied every year with compounding, takes the initial value to the final value. It is the fair way to compare investments or revenue growth over different periods.
CAGR % = (final ÷ initial)^(1 ÷ years) − 1, × 100
Frequently asked questions
CAGR vs ROI — which should I use?
ROI shows total return; CAGR annualizes it. A 100% ROI over 5 years is only 14.9% CAGR — CAGR is what makes comparisons honest.
Can CAGR handle losses?
It handles final values lower than initial (negative CAGR), but cannot be computed from a zero or negative initial value.