Budget Allocation Calculator
Allocate a total budget across categories by percentage
Use one category:percentage entry per line.
Budget Allocation Calculator — what it does
Type a total budget and a list of category:percentage lines, and the tool converts the percentages into money, totals them, and reports whatever is left unallocated. The percentage total is shown separately so an overcommitted plan adding up to 110 percent is caught before it reaches a spreadsheet or a meeting.
When this tool helps
- Splitting a marketing budget across channels and seeing the actual spend each percentage implies.
- Applying a personal budgeting rule such as 50/30/20 to a specific monthly income figure.
- Dividing departmental or project funding by agreed shares and exporting the result for approval.
How to use it
- Enter the total budget amount.
- Add one category:percentage entry per line.
- Press Calculate to convert percentages into amounts.
- Check the unallocated remainder, then download the result.
Accuracy, limits, and good practice
- A percentage total under 100 leaves a genuine reserve; over 100 means the plan is already overspent, which the summary makes explicit.
- Rounding each line to whole currency units can leave a small remainder against the total — normal, and usually absorbed by the largest category.
- Percentages describe intent, not commitment. Revisit them once actual spend data arrives rather than treating the split as fixed.
Frequently asked questions
What format should each line use?
One entry per line as name:percentage, for example Marketing:35. Spaces around the colon are fine.
Can percentages be decimals?
Yes. Values such as 12.5 work, which matters when you are splitting across many categories.
Can I export the allocation?
Yes, the result can be downloaded so the split can go straight into a spreadsheet, a proposal or a budget approval request.
Related tools on this site
- Break-even Calculator — Calculate break-even units and revenue
- E-commerce Profit Calculator — Estimate marketplace fees, advertising cost, profit, and margin
- Profit Margin Calculator — Calculate revenue, profit, margin, and markup
Everything above runs inside this page. Budget Allocation Calculator needs no account, no upload, and no server round trip — close the tab and nothing is left behind.
預算分配計算器能做什麼
輸入預算總額，再以「分類:百分比」逐行列出配置，工具會把百分比換算成金額、加總，並回報未配置的餘額。百分比總和會另外顯示，因此加總到 110% 的超編計畫，在進入試算表或會議之前就會被抓出來。
什麼時候用得上
- 把行銷預算分配到各渠道，看清每個百分比實際代表多少錢。
- 把 50/30/20 這類理財原則套到具體的每月收入上。
- 依議定比例分配部門或專案經費，並匯出結果供核准。
使用步驟
- 輸入預算總額。
- 每行填入一組「分類:百分比」。
- 按下計算，把百分比換算成金額。
- 檢查未配置餘額，再下載結果。
精確度、限制與實務建議
- 百分比總和低於 100 表示保留了預備金；高於 100 代表計畫已超編，摘要會直接標示出來。
- 各行金額取整到整數幣值時，可能與總額出現些微差額，屬正常現象，通常由最大分類吸收。
- 百分比代表規劃意圖而非承諾，實際支出資料出來後應重新檢視，不要當成固定值。
常見問題
每一行要用什麼格式？
一行一組，格式為「名稱:百分比」，例如「行銷:35」。冒號前後有空格也沒問題。
百分比可以有小數嗎？
可以，12.5 這類數值都能使用，分類較多時特別需要。
分配結果可以匯出嗎？
可以下載結果，直接放進試算表、提案或預算核准文件中。
本站相關工具
以上步驟全部在這個頁面內完成，預算分配計算器 不需要註冊、不上傳檔案、也不經過伺服器，關閉分頁後不會留下任何資料。