Quarters Calculator
Created by
Eon CalculatorManaging financial reports, project schedules, and quarter timelines without the right tools can be challenging. That’s where our quarters calculator comes into play. This simple tool helps you calculate the number of quarters between two dates, add quarters to a specific date, or subtract quarters from a given date.
Definition of Quarters
Quarters in a context of years refers to four equal parts, each spanning three months and this measurement is widely used in business, finance, and planning to organize time into manageable segments. The year is divided into Q1 (January-March), Q2 (April-June), Q3 (July-September), and Q4 (October-December), with each quarter lasting approximately 90 days, although variation occurs in the days count due to different month lengths.
| Quarter | Start Date | End Date | Total Days | Total Weeks | Total Months |
|---|---|---|---|---|---|
Q1 | 2025-01-01 | 2025-03-31 | 90 days | 12.86 weeks | 3 months |
Q2 | 2025-04-01 | 2025-06-30 | 91 days | 13 weeks | 3 months |
Q3 | 2025-07-01 | 2025-09-30 | 92 days | 13.14 weeks | 3 months |
Q4 | 2025-10-01 | 2025-12-31 | 93 days | 13.14 weeks | 3 months |
Table 1 shows 2025 breakdown for quarter, total days, weeks and months.
How this calculator works?
Between two date To calculate the number of quarters between two dates, compare the years and months of both dates. Each year has hour quarters, so you can easily calculate the total quarters by considering the difference in years and adjusting for the months.
Adding quarters Adding quarters to a specific date allows you to calculate quarters forward in time by adding a certain number of quarters to a given date. The quarter’s calculator adjusts the month and year accordingly, keeping the day the same unless it results in an invalid date.
Quarters = (Later Year − Earlier Year) × 4 + (Quarter Difference Between Months)
Adding quarters Adding quarters to a specific date allows you to calculate quarters forward in time by adding a certain number of quarters to a given date. The quarter’s calculator adjusts the month and year accordingly, keeping the day the same unless it results in an invalid date.
New Date = Starting Date + (Number of Quarters × 3 Months)
Subtract quarters
Subtracting quarters from a specific date option allows you to move backward by removing a certain number of quarters from a given date. Like adding quarters, it adjusts the month and year while keeping the day the same unless it results in an invalid date.
New Date = Starting Date − (Number of Quarters × 3 Months)
For example: Start Date:January 15, 2022 – End Date: January 15, 2023 (2023 − 2022) × 4 + (Q1 − Q1) = 4 quarters.
How to use this calculator
Step 1: Choose what you want to calculate: the number of quarters between two dates, add quarters to a date, or subtract quarters from a date. Each option serves a different purpose.
Step 2: Type in the start and end dates (if needed) in the format provided (e.g., DD/MM/YYYY). Double-check that the dates are correct before proceeding.
Step 3: Click the “Calculate” button once the details are entered. The calculator will process the information and display the result immediately.
Step 4: If you’d like to perform another calculation, use the “Clear” button to erase the previous inputs. Then, enter new values and repeat the steps.
| Quarter | Start Date | End Date | Total Days | Workdays | Holidays |
|---|---|---|---|---|---|
FY Q1 | 2024-10-01 | 2024-12-31 | 92 days | 65 days | 4 days |
FY Q2 | 2025-01-01 | 2025-03-31 | 90 days | 64 days | 3 days |
FY Q3 | 2025-04-01 | 2025-06-30 | 91 days | 66 days | 2 days |
FY Q4 | 2025-07-01 | 2025-09-30 | 92 days | 66 days | 2 days |
Table 1 shows fiscal quarters for the financial year 2024 – 2025 with workdays and holiday details.
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