What the Gross Profit Calculator Does
This free Gross Profit Calculator works out two key figures for your business: your gross profit (in dollars) and your gross profit margin (as a percentage). You enter just two numbers — your total Revenue and your Cost of Goods Sold — and the tool instantly returns how much money is left over after covering the direct costs of producing what you sold. It's a fast way to gauge the underlying profitability of a product, a service line, or a whole business before fixed overheads and taxes are taken into account.
The Inputs Explained
- Revenue ($): The total amount of money earned from sales before any deductions — your gross sales figure for the period.
- Cost of Goods Sold ($): The direct costs of producing the goods sold, such as raw materials, manufacturing labour and components. It excludes indirect costs like rent, marketing or admin salaries.
The Formula
The calculator uses two standard accounting formulas:
- Gross Profit = Revenue - Cost of Goods Sold
- Gross Profit Margin (%) = ((Gross Profit) ÷ (Revenue)) × 100
The dollar figures are displayed formatted to your local currency, while the margin is shown as a percentage.
Worked Example
Suppose your shop earned 50,000 in revenue and the cost of goods sold was 30,000.
- Gross Profit = 50,000 -30,000 = $20,000
- Gross Profit Margin = ((20,000) ÷ (50,000)) × 100 = 40%
This tells you that for every dollar of sales, 40 cents remains to cover operating expenses and contribute to net profit.
使用注意事項與精準校對原則（6 大核心守則）
📐 1. 嚴格對齊輸入量綱與單位
輸入各項數值時請務必確認量綱（例如小時、天數、金額、百分比），避免單位不匹配引發推算偏差。
🔒 2. 純前端本機毫秒級隱私保障
所有計算邏輯 100% 在您的終端瀏覽器內完成，資料絕不上傳伺服器，嚴格守護商業與個人隱私。
📊 3. 符合公認學術與產業計算模型
演算法嚴格遵循國際通用數學公式與標準計算模型，經多重情境交叉核對，數值嚴密精確。
📋 4. 一鍵複製與免登入 PDF 匯出
支援一鍵複製推算結果字串至剪貼簿，亦可直接點擊列印按鈕輸出純淨 PDF 工作報表。
🔄 5. 多情景敏感度動態對比
建議針對極端值與多組預期情景分別試算，觀察輸出數據的波動區間，輔助做出更穩健的決策。
🛡️ 6. 專業諮詢與日常參考免責聲明
本工具運算結果供日常排程、學業研習與事前參考之用，如涉及重大法規或投資決策請諮詢持證專家。