Accurate tools, instant answers
Miqyas is a set of calculators and tools built on primary sources: the published Umm al-Qura tables for dates, and documented labour-law texts and fatwas for the financial and academic calculators. Every result shows its workings, so you can check it yourself.
Hijri to Gregorian Date Converter
Convert any date between the Hijri and Gregorian calendars with official Umm al-Qura accuracy, including the day of the week and day of year.
Zakat Calculator
Calculate zakat on money, gold and silver with an up-to-date nisab based on the gold price, plus a hawl (due-date) helper.
End-of-Service Calculator — Saudi Arabia
End-of-service benefits under Articles 84, 85 and 86 of the Saudi Labour Law, with a step-by-step breakdown.
GPA Calculator
Semester and cumulative GPA on the 5.0 and 4.0 scales and as a percentage, with a target-GPA planner.
Islamic Age Calculator
Your age in years, months and days in both calendars, the total days you have lived, and the date of your next birthday.
Available nowDate Difference Calculator
Calculate the period between two dates in days, weeks and months — Hijri or Gregorian — including official business days.
Why Miqyas?
Many conversion and calculation sites rely on approximate arithmetic formulas that drift a day or two from the official calendar, or apply outdated rules for end-of-service benefits and zakat. At Miqyas, every tool is built on its primary source: the published Umm al-Qura tables for dates, the text of the Saudi Labour Law for end of service, documented fatwas from official ifta bodies for zakat, and university regulations for GPA — and each tool page cites the source of every rule it applies.
All calculations run directly in your browser; we ask for no registration and know nothing about what you calculate.