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Easter Date Calculator

Calculate easter date with clear inputs, formulas, and supporting results.

Free browser-based tool • No signup required
Easter Date

Easter Date Calculator

Easter Sunday—
Month number—
Day of month—
Results are estimates for informational purposes. Verify critical calculations and project requirements independently.

Calculator Inputs and Outputs

Inputs

  • Gregorian year — example: 2027

Results

  • Easter Sunday
  • Month number
  • Day of month

Formula used

Uses the Meeus/Jones/Butcher Gregorian computus algorithm.

How to Use the Easter Date Calculator

Enter the requested values, check the units and assumptions, then select Calculate Easter Date. The built-in defaults provide a complete working example.

Formula

Uses the Meeus/Jones/Butcher Gregorian computus algorithm.

Understanding the Results

The primary answer appears first. Supporting outputs show related quantities, conversions, dates, costs, ratios, or intermediate values. Calculations keep additional precision before display rounding.

Accuracy Tips

  • Use measured values and consistent units.
  • Review assumptions, rates, timing, and efficiency inputs.
  • Recalculate after changing any condition.

Important Note

This tool provides an informational estimate. Confirm critical financial, medical, construction, scientific, tax, legal, or safety decisions with an appropriately qualified professional.

Calculation Standards

This tool uses documented formulas and high-precision internal values. Displayed results may be rounded for readability. Review the assumptions and verify important decisions with a qualified professional.

Read our calculation methodology