How to Calculate Days Between Two Dates (and Weeks, Months)
Learn how to calculate the number of days between two dates by hand or online, including or excluding the end date, plus weeks, months and working days.
International guides
Guides, tips and worked examples for our free international. Every article links to the tool it explains.
How Currency Exchange Rates Work: A Simple Guide
Understand how currency exchange rates work: buying and selling rates, the spread, mid-market rates, why rates change daily and how to convert money correctly.
Why the Dollar Rate Changes in Pakistan: A Plain-English Guide
Why does the dollar rate in Pakistan keep changing? Learn how imports, remittances, reserves, interest rates and IMF programmes move the USD to PKR rate.