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Calculate exact date difference in days, weeks, months, years. Free online date duration calculator with leap year support.
605
Total Days
86 weeks 3 days
Total Weeks
19
Total Months
1
Total Years
14,520
Total Hours
8,71,200
Total Minutes
1y 7m
Years (calendar)
1 January 2025 – 29 August 2026
Date difference
1 January 2025 to 29 August 2026 = 605 days
Date difference calculator for exact duration in days, weeks, months, years with leap year support.
Use our Date Differenceto get accurate results instantly. You may also want to explore our Age Calculator or Percentage Calculator.
Date objects compute ms difference, converts to days/weeks/months/years.
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Input your date difference parameters including principal amount, interest rate, and tenure.
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Use the sliders or numeric inputs to fine-tune your values for accurate results.
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Your results update in real-time showing EMI, total interest, and total payment.
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Check the amortization schedule, charts, and download the PDF report for your records.
ms difference divided by conversion factors.
1Enter start: Aug 15, 2024
2Enter end: Jan 26, 2026
3Get duration
530 days, 17 months 11 days
1Enter start: Jan 1, 2026
2Enter end: Dec 31, 2026
365 days, 52 weeks
Our Date Difference uses the standard formula adopted by all major Indian banks and financial institutions. The calculation engine processes your inputs in real-time with 99.9% accuracy. All formulas are verified against official bank calculation methods and regulatory guidelines.
Last reviewed: 2026-07-18. We update our calculations whenever regulatory changes occur (tax slabs, interest rates, TDS rules, etc.).
Priya Patel
Tax Consultant & CPA
Priya Patel is a Chartered Accountant with expertise in Indian income tax, GST, and corporate taxation. She has advised 500+ clients on tax optimization and compliance under both Old and New tax regimes.
Find answers to common questions about this calculator below.
Creates Date objects, computes ms difference. Days = ms / (1000×60×60×24). Months by calendar boundaries.
Yes, JavaScript Date correctly handles Gregorian calendar including February 29.
Adds one day for inclusive ranges. Jan 1 to Jan 2 = 1 day without, 2 days with.
Yes, enter DOB as start and today as end date.