https://ilham.dev/tags/calculator/Recent content in Calculator on ilham.devHugo -- gohugo.ioenSun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-add-or-subtract-dates-without-calendar-counting/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-add-or-subtract-dates-without-calendar-counting/Date math is easy to get wrong because months have different lengths and weekends may or may not count. The Date Calculator tool handles the repetitive part so I can focus on checking whether the result makes sense.https://ilham.dev/posts/how-to-calculate-age-accurately/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-calculate-age-accurately/Age sounds simple, but exact age depends on the date you measure against. The Age Calculator tool handles the repetitive part so I can focus on checking whether the result makes sense.https://ilham.dev/posts/how-to-calculate-interest-without-hiding-the-assumptions/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-calculate-interest-without-hiding-the-assumptions/Interest calculations depend heavily on method: flat, effective, annuity, compound, tiered, or after-tax. I use Interest Calculator for the quick version of this task, then I review the output before relying on it.https://ilham.dev/posts/how-to-calculate-loan-payments-before-borrowing/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-calculate-loan-payments-before-borrowing/A loan calculator helps me see the monthly payment, total interest, and how extra payments change the schedule. I use Loan Calculator for the quick version of this task, then I review the output before relying on it.https://ilham.dev/posts/how-to-calculate-percentages-without-mental-math/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-calculate-percentages-without-mental-math/Percentages are simple until the question changes: percentage of, percentage increase, percentage decrease, and reverse percentage are different tasks. The Percentage Calculator tool handles the repetitive part so I can focus on checking whether the result makes sense.https://ilham.dev/posts/how-to-convert-fuel-economy-units/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-convert-fuel-economy-units/Fuel economy units can be confusing because km/L and MPG get better when the number is higher, while L/100 km gets better when the number is lower. I use Fuel Economy Converter for the quick version of this task, then I review the output before relying on it.https://ilham.dev/posts/how-to-convert-temperatures-without-mixing-scales/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-convert-temperatures-without-mixing-scales/Temperature conversion is simple, but mistakes happen when the scale is not written clearly. I use Temperature Converter for the quick version of this task, then I review the output before relying on it.https://ilham.dev/posts/how-to-evaluate-math-expressions-with-variables/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-evaluate-math-expressions-with-variables/A math evaluator is useful when the calculation is more than a simple calculator entry but not big enough for a spreadsheet. I use Math Evaluator for the quick version of this task, then I review the output before relying on it.