日割りコスト計算機

共有リンク

はじめに

Daily Cost Calculator — Turn any total cost into its daily, monthly and annual equivalents. Enter Total cost, Number of days to get an instant, accurate result.

計算式

Daily cost = total cost ÷ number of days. Monthly equivalent = daily cost × 30.44 (the average days per month). Annual equivalent = daily cost × 365.25 (the average days per year, accounting for leap years).

ステップごとの説明

Enter the Total cost.
Enter the Number of days.
Click Calculate to see your result instantly.

実例

Example: With Total cost = 300, Number of days = 30, the Daily Cost Calculator gives Daily Cost: 10, Monthly Equivalent: 304.4, Annual Equivalent: 3652.5.

よくある質問

Why 30.44 days per month instead of 30?

It's the average month length across a full year (365.25 ÷ 12), giving a more accurate monthly estimate than assuming every month is 30 days.

What is this useful for?

Comparing subscriptions, habits, or recurring expenses that are billed at different intervals on an even footing.

What inputs does the Daily Cost Calculator need?

You'll need to provide: Total cost, Number of days. All fields use sensible defaults, so you can see a working example immediately and then adjust the values to match your own numbers.

How accurate is the Daily Cost Calculator?

The Daily Cost Calculator applies the formula exactly as calculated — Daily cost = total cost ÷ number of days. Monthly equivalent = daily cost × 30.44 (the average days per month). Annual equivalent = daily cost × 365.25 (the average days per year, accounting for leap years). — so results are precise for the inputs you provide. Accuracy depends on entering correct, realistic input values.

Is the Daily Cost Calculator free to use?

Yes, the Daily Cost Calculator is completely free, requires no signup, and runs instantly in your browser.