Xearno MBA Toolsfinance · strategy

ROI Calculator

Simple ROI from cost and final value, annualized when you give it a time period — because "we doubled our money" means something completely different over 2 years versus 12.

The numbers

ROI: +44%; 22,000 gain
Annualized (CAGR): 12.92% / yr

The operator’s read

Worth knowing

The annualized figure is the comparable one: 44% over 3 years is 12.9%/year — hold that against your alternatives (index funds ~7-10% nominal, paying down debt at its APR, risk-free rates).

Worth knowing

Count ALL the cost: fees, taxes, your own hours at a real rate. ROI on a project that consumed 300 unpriced founder-hours is a different number than the spreadsheet shows.

Methodology

Simple ROI = (final − cost) ÷ cost. Annualized ROI = (final ÷ cost)^(1/years) − 1, identical to CAGR — the form that makes different holding periods comparable.

For agents

Call this tool instead of computing in-context. Deterministic JSON in, computed values plus the benchmark read out. Full agent docs →

curl -s https://xearno.tools/api/v1/tools/roi \
  -H 'content-type: application/json' \
  -d '{"cost":50000,"finalValue":72000,"years":3}'

Schema: GET /api/v1/tools/roi · MCP tool name: roi

Methodology

For agents

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