Everyday Calculators

Everyday Calculators

◆ Everyday Tools

Dates, grades, unit conversions, random draws and number-base conversions for the small jobs that come up every week.

9 calculators 100% Free No sign-up Works on all devices
GPA calculator icon for working out a weighted, unweighted or cumulative grade point average from credit hours and letter grades

GPA Calculator

Credit weighted GPA on the 4.0 scale with plus and minus grades, Honors and AP weighting, cumulative GPA and the term GPA a target takes.

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Graduation cap icon for the grade calculator, working out a weighted course grade, letter grade and final exam score needed

Final Grade Calculator

Weighted or points based course grade, letter grade, dropped lowest scores and the score you need on the final exam.

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Binary digits icon for the binary converter, turning base 2 bits into decimal, signed two's complement and UTF-8 text

Binary Converter

Binary to decimal and back, with two's complement signed readings, nibbles and bytes, and UTF-8 text to binary, exact at any length.

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Hexagon icon for a hex converter that reads base 16 digits as decimal, bytes, colour codes and UTF-8 text

Hex Converter

One hex value in, every reading out: decimal, binary, octal, both byte orders, a colour swatch, UTF-8 text and a hex dump, with the working shown.

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Steel rule marked in millimetres and inches

MM to Inches

Millimetres to inches in decimals and fractions, with the rounding error in millimetres and the nearest imperial drill or plate size.

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Ruler icon for the cm to inches converter

CM to Inches

Centimeters to inches in every form at once: decimal, ruler fraction, feet and inches, and the spoken height.

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Shuffle arrows for a random number generator drawing unique numbers in a range with crypto.getRandomValues

Random Number Generator

Draw whole numbers or decimals in any range, with repeats or unique only, sorted or as drawn, and see the odds of the set you got.

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Calendar page for an age calculator counting years, months and days from a date of birth

Age Calculator

Work out an exact age on today or any other date, with the totals in weeks, days and hours, your next birthday and the weekday you were born.

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Dice icon for the dice roller, with d20 advantage, 4d6 drop lowest and dice notation odds

Dice Roller

Tap a die or type notation like 2d20kh1 or 4d6dl1, then see the exact chance of your total and how your session compares with the odds.

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Need money answers?

Mortgages, loans, car payments, savings and compound interest.

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About

Everyday calculators for the jobs that keep coming up

The everyday calculators handle the small, recurring questions that are quicker to look up than to work out: how old someone is to the day, what mark the final exam needs to be, how many inches a metric measurement really is.

The age calculator counts years, months and days between two dates and lists the milestones ahead. The GPA and grade calculators turn coursework into the number a school actually records, and the cm to inches and mm to inches converters give both the decimal and the nearest practical fraction.

For anything that needs a fair draw or a different number base, the random number generator and dice roller use a cryptographic source with no bias, and the binary and hex converters translate between bases with the place values shown.

FAQ

Frequently Asked Questions

Are these everyday calculators free to use?

Yes. Every calculator here is 100% free, with no sign-up and no limits, and each one runs entirely in your browser.

Do the calculators show how the answer was worked out?

Yes. Each one shows the formula it applied and a step-by-step calculation box, so you can follow the method and reuse it in exams or at work.

Do they work on mobile phones?

All calculators are fully responsive and touch-friendly, so they adapt to phones, tablets and desktops automatically.

Is my data stored anywhere?

No. Everything is calculated locally in your browser, and nothing you type is uploaded, stored or shared.