Calculate monthly cost from a weekly, every-two-weeks, daily, quarterly or yearly charge, add up your monthly bills, or compare monthly and annual plans.

Find the average monthly equivalent of a recurring charge.

USD planning estimate. Blank optional amounts count as zero; income may be omitted.

Changing frequency reinterprets the amount; it does not convert it.

Tax or fee uplift

Blank means 0%. Applied to the total, including the common fee.

Monthly Cost Formula

The following formula is used to calculate the Monthly Cost ($). 

MC = DC × 365 / 12
  • Where MC is the Monthly Cost ($)
  • DC is the total daily cost ($) 

For a daily charge, select Daily and multiply the charge by 365 / 12 to estimate an average monthly cost. Weekly and every-two-week charges use 52 and 26 periods per year; actual calendar-month bills may differ.

How to Calculate Monthly Cost?

The following example problems outline how to calculate Monthly Cost ($).

Example Problem #1:

  1. First, determine the total daily cost ($). The total daily cost ($) is given as 15.
  2. Finally, calculate the Monthly Cost ($) using the equation above: 

MC = DC * 365 / 12

The values given above are inserted into the equation below:

MC = 15 * 365 / 12 = 456.25 USD

FAQ

How is the average monthly daily-cost factor derived?

The calculator uses 365 / 12 = 30.416666… days per average month without rounding this factor before calculation. This is a planning convention, not the exact day count of a particular month. In Budget mode, blank costs count as zero and income is optional. Plan comparison charges each started annual term, applies the same one-time fee and uplift to both plans, and assumes no refund for unused annual months.

Can the monthly cost calculator be used for any type of daily expense?

Yes, the monthly cost calculator can be applied to any type of daily expense. Whether it’s for business expenses, personal budgeting, or any other daily cost, you can use this calculator to estimate your monthly expenditure by inputting your total daily cost.

What should I do if my daily costs vary each day?

If your daily costs vary, you can calculate an average daily cost by adding up your total costs for a certain period (e.g., a week or a month) and then dividing by the number of days in that period. Use this average daily cost as the DC value in the monthly cost formula to estimate your monthly cost.