The Notes Calculator Blog
Calculator guides & deep dives
Practical math, written like a friend explaining it over coffee. Every post comes with an embedded calculator you can use right in the browser.
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19–24 of 24
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Freelance Rates: Work Out What to Charge, Tax Included
Work out what to charge as a freelancer: turn an income goal, billable hours, expenses and self-employment tax into an hourly rate, then check the invoice.
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Free GPA Calculator: Calculate Your Grade Point Average
Free GPA calculator using the standard 4.0 scale. Enter your letter grades and credit hours to calculate semester and cumulative grade point average.
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Free BMI Calculator: Check Your Body Mass Index
Free online BMI calculator for adults. Enter your height and weight to calculate Body Mass Index, check your weight category, and understand your results.
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Notepad Calculator vs Spreadsheet: When to Use Which
Notepad calculator vs spreadsheet: when to use each tool. Quick math, budgets, and estimates in a notepad calculator. Data analysis and charts in a spreadsheet.
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Best Calculator App for Mac in 2026: 5 Picks Compared
Best calculator app for Mac in 2026: 5 top picks compared. Notepad, scientific, RPN, and Apple's built-in tools. Features, offers, best pick guide.
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Free Percentage Calculator: Find Percentages Instantly
Free percentage calculator with 3 tools: find what percent of a number is, what percentage one number is of another, and add a percentage to a value.
Stop calculating in your head.
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