Calculator Guides

Each QuickCalc tool comes with an explanation so you know what the numbers mean. Start learning:

• Loan Calculator Guide – Understand amortization and payment schedules.
• Age Calculator Guide – See how we compute exact age in years, months and days.
• Compound Interest Guide – Learn the formula behind growing investments.
• BMI Calculator Guide – Formula for body mass index and weight categories.
• Date Difference Guide – Understand how we count days between dates.
• Tip Calculator Guide – See how tips and splits are calculated.
• Business Days Guide – Learn how workdays are counted.