經營生意預算 · 規劃
跑道與燒錢
從現金與淨燒錢算出跑道，可選填燒錢按月遞增或遞減，並對照募資現實解讀結果：募資要花 3–6 個月，募資後 18–24 個月是常態。
數字
- Runway
- 12.5 months
- Monthly burn (today)
- 40,000
行家的解讀
好跡象
12–24 months is the standard healthy post-raise range — enough to hit the next milestone before raising again.
值得一提
The sharper question (Paul Graham’s "default alive"): at current growth, does revenue overtake expenses before cash runs out? Runway alone treats revenue as static — model the crossover, not just the countdown.
方法論
固定燒錢：跑道 = 現金 ÷ 每月淨燒錢。若燒錢有趨勢，現金會逐月以 燒錢 ×(1+g)^t 消耗，最後不足一個月的部分採線性修正。
淨燒錢 = 總支出 − 營收。用近 3 個月的移動平均；單月雜訊大（年度發票、一次性成本）。
募資耗時 3–6 個月、募資後 18–24 個月，是標準的創投營運準則。「預設存活」（營收成長在現金歸零前跨過支出）是更嚴格也更好的測試。
給代理使用
呼叫這個工具，而不是在對話脈絡裡自行計算。輸入確定性的 JSON，取回計算後的數值以及基準解讀。 完整代理文件 →
curl -s https://xearno.tools/api/v1/tools/runway \
-H 'content-type: application/json' \
-d '{"cash":500000,"burn":40000,"burnChange":0}'Schema： GET /api/v1/tools/runway · MCP 工具名稱： runway
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