What This Calculator Does
Setting the right hourly rate is one of the hardest parts of freelancing. This calculator works backwards from the income you actually want to take home and the business expenses you must cover, then divides that total by the number of billable hours you realistically work in a year. The result is the minimum hourly rate you should charge to hit your financial goals.
How to Use It
Enter your desired annual income — the money you want left for yourself. Add your annual business expenses, such as software, equipment, insurance, marketing, and accounting. Then estimate how many hours you can actually bill each week and how many weeks you work per year (remember to subtract holidays, sick days, admin time, and unpaid prospecting). The calculator returns your recommended hourly rate plus the total revenue you must generate.
The Formula Explained
The math is simple but powerful:
The key insight is that not every working hour is billable. Admin, sales, and breaks are unpaid, so your billable hours are usually far lower than the hours you sit at your desk. Lower billable hours mean a higher rate is needed to reach the same income.
Worked Example
Suppose you want to earn 60,000, have10,000 in expenses, bill 30 hours a week, and work 48 weeks a year. Billable hours = 30 × 48 = 1,440. Total revenue needed = 60,000 +10,000 = 70,000. Rate = 70,000 ÷ 1,440 ≈ $48.61 per hour.
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。