Calculator library · page 4

Nth root · real numbers

Nth root · real numbers: use radicand, root degree. Review the formula, worked example and calculation steps.

Radioactive half-life

Radioactive half-life: use initial quantity, elapsed time, half-life in the same time units. Review the formula, worked example and calculation steps.

Z-score

Z-score: use observed value, population mean, population standard deviation. Review the formula, worked example and calculation steps.

P-value · standard normal z test

P-value · standard normal z test: use z test statistic, alternative hypothesis. Review the formula, worked example and calculation steps.

Confidence interval · known population deviation

Confidence interval · known population deviation: use sample mean, known population standard deviation, sample size. Review the formula, worked example and calculation steps.

Sample size · population proportion

Sample size · population proportion: use confidence level, margin of error, expected population proportion. Review the formula, worked example and calculation steps.

Sample standard deviation

Sample standard deviation: use sample values. Review the formula, worked example and calculation steps.

Mean, median, modes & range

Mean, median, modes & range: use data values. Review the formula, worked example and calculation steps.

Factor & common factor finder

Factor & common factor finder: use first positive integer, second positive integer. Review the formula, worked example and calculation steps.

Prime factorization

Prime factorization: use positive integer. Review the formula, worked example and calculation steps.

Decimal rounding

Decimal rounding: use number, decimal places. Review the formula, worked example and calculation steps.

Scientific notation

Scientific notation: use finite number, significant figures. Review the formula, worked example and calculation steps.

Binary, hexadecimal & big integer arithmetic

Binary, hexadecimal & big integer arithmetic: use first integer, second integer, input number base. Review the formula, worked example and calculation steps.

Right triangle · sides & angles

Right triangle · sides & angles: use first perpendicular leg, second perpendicular leg. Review the formula, worked example and calculation steps.

2 × 2 matrix arithmetic

2 × 2 matrix arithmetic: use first matrix · row 1, column 1, first matrix · row 1, column 2, first matrix · row 2, column 1. Review the formula, worked example and calculation steps.

Age calculator

Calculate age between a date of birth and a chosen date. See the calendar-based result, calculation steps and date assumptions.

Date difference & day counter

Date difference & day counter: use start date, end date. Review the formula, worked example and calculation steps.

Date calculator · add or subtract days

Date calculator · add or subtract days: use start date, days to add · negative to subtract, count. Review the formula, worked example and calculation steps.

Day of the week

Day of the week: use calendar date. Review the formula, worked example and calculation steps.

Time calculator · add minutes

Time calculator · add minutes: use starting time, minutes to add · negative to subtract. Review the formula, worked example and calculation steps.

Hours worked & time card

Hours worked & time card: use start time, end time, unpaid break. Review the formula, worked example and calculation steps.

Time duration · date and clock

Time duration · date and clock: use start date, start time, end date. Review the formula, worked example and calculation steps.

UTC time zone converter

UTC time zone converter: use utc date, utc time, destination timezone. Review the formula, worked example and calculation steps.

GPA · supplied grade points

GPA · supplied grade points: use grade points for each course, corresponding course credits. Review the formula, worked example and calculation steps.

Final grade needed

Final grade needed: use current average, final exam weight, desired course grade. Review the formula, worked example and calculation steps.

Fuel cost

Fuel cost: use journey distance, fuel consumption, fuel price. Review the formula, worked example and calculation steps.

Fuel economy & gas mileage

Fuel economy & gas mileage: use distance driven, fuel used. Review the formula, worked example and calculation steps.

Tip & bill split

Tip & bill split: use bill before tip, tip percentage, people sharing equally. Review the formula, worked example and calculation steps.

Running pace

Running pace: use distance, elapsed time. Review the formula, worked example and calculation steps.

Sleep time arithmetic

Sleep time arithmetic: use wake-up time, planned hours in bed, additional minutes in bed. Review the formula, worked example and calculation steps.

Unit converter

Convert a value between compatible units. Select source and target units, then review the conversion factor and calculation steps.

Temperature · Celsius, Fahrenheit & Kelvin

Temperature · Celsius, Fahrenheit & Kelvin: use temperature, source scale, destination scale. Review the formula, worked example and calculation steps.

IPv4 subnet calculator

IPv4 subnet calculator: use ipv4 address, cidr prefix length. Review the formula, worked example and calculation steps.

Roman numeral converter

Roman numeral converter: use whole number. Review the formula, worked example and calculation steps.

Base64 text encoder / decoder

Base64 text encoder / decoder: use text or padded base64, operation. Review the formula, worked example and calculation steps.

URL component encoder / decoder

URL component encoder / decoder: use text or encoded component, operation. Review the formula, worked example and calculation steps.

Bandwidth & download time

Bandwidth & download time: use file size, connection throughput. Review the formula, worked example and calculation steps.

GDP · expenditure approach

GDP · expenditure approach: use consumption, investment, government spending. Review the formula, worked example and calculation steps.

Square footage

Square footage: use length, width. Review the formula, worked example and calculation steps.

Tile quantity

Tile quantity: use length, width, tile length. Review the formula, worked example and calculation steps.

Mulch volume

Mulch volume: use length, width, depth. Review the formula, worked example and calculation steps.

Gravel volume & mass

Gravel volume & mass: use length, width, depth. Review the formula, worked example and calculation steps.

Roof area · uniform pitch

Roof area · uniform pitch: use length, width, pitch rise per 12 horizontal units. Review the formula, worked example and calculation steps.

Stair geometry

Stair geometry: use total vertical rise, maximum desired riser height, tread going. Review the formula, worked example and calculation steps.

Density

Density: use mass, volume. Review the formula, worked example and calculation steps.

Mass from density & volume

Mass from density & volume: use density, volume. Review the formula, worked example and calculation steps.

Weight force

Weight force: use mass, gravitational acceleration. Review the formula, worked example and calculation steps.

Horsepower from torque

Horsepower from torque: use shaft torque, rotational speed. Review the formula, worked example and calculation steps.