All Calculators

Estimate trip fuel consumption and cost using distance, fuel economy, trip type, fuel price and number of passengers.

Calculate fuel economy in MPG, km/L and L/100km from distance travelled and fuel used.

Calculate tire diameter, sidewall height, circumference and approximate revolutions per mile.

Convert annual salary into hourly, daily, weekly, biweekly and monthly equivalents.

Calculate a new salary after a percentage raise and compare annual, monthly and hourly increases.

Calculate profit, markup and gross margin from cost and selling price.

Calculate profit, profit margin and markup from revenue and total costs.

Calculate the sales volume and revenue needed to cover fixed and variable costs.

Estimate concrete for slabs, walls, footings, columns and post holes, including waste, bags and project cost.

Calculate square footage for common shapes and convert the result to square metres and square yards.

Estimate gravel volume, weight and cost for driveways, paths and landscaping projects.

Estimate wall paint quantity using room dimensions, doors, windows, number of coats and paint coverage.

Estimate roof area, roofing squares, bundles and cost from building footprint, roof pitch and waste.

Calculate board feet for lumber and estimate total volume and cost.

Calculate roof pitch, angle, slope percentage and slope factor from rise and run.

Estimate tile quantity, boxes and material cost while including a waste allowance.

Estimate flooring coverage, required packages and total material cost.

Scale ingredient quantities when changing a recipe's number of servings.

Convert cups to grams for common baking ingredients using ingredient-specific reference weights.

Calculate exact age between two calendar dates plus total days, weeks, months and time until the next birthday.

Count working days between two dates while excluding weekends and optional custom holidays.

Calculate elapsed working hours between two clock times, including overnight shifts and unpaid breaks.

Calculate the exact number of days between two dates, with optional inclusive counting.

Calculate the duration between two times, including periods that cross midnight.

Calculate weighted course grades and determine the score needed on a final exam to reach a target grade.

Calculate GPA from course grades and credit hours on a 4.0 scale.

Estimate daily, monthly and yearly electricity cost for an appliance or device.

Convert watts to amps for DC, single-phase AC and three-phase AC circuits.

Estimate battery runtime from capacity, load current and usable capacity.

Calculate tip, total bill and per-person amounts when splitting a bill.

Calculate sale price and savings after one or two successive percentage discounts.

Compare two products by cost per unit to identify the better value.

Add sales tax to a pre-tax amount or reverse-calculate the pre-tax price from a tax-inclusive total.

Calculate speed, distance or travel time when the other two values are known.

Estimate monthly loan payment, total interest and total repayment for a fixed-rate installment loan.

Project investment growth from an initial balance, interest rate, compounding frequency and monthly contributions.

Estimate monthly mortgage cost including principal, interest, property tax, insurance and HOA fees.

Estimate vehicle loan payments using price, down payment, trade-in, sales tax, APR and term.

Estimate the monthly amount needed to reach a savings target over a chosen period.

Calculate running pace, speed and estimated 5K and 10K finish times from distance and elapsed time.

Estimate mulch volume, bag quantity and material cost for garden beds and landscaping.

Solve common percentage problems including percent-of, percentage increase or decrease, percentage change and reverse percentage.

Add, subtract, multiply or divide fractions and return a simplified fraction, decimal and mixed number.

Find the average, median, sum, range, minimum, maximum and count for a list of numbers.

Calculate percentage increase or decrease between an original value and a new value.

Simplify ratios, convert a ratio to a decimal or percentage and scale it to an equivalent ratio.

Calculate the area of rectangles, squares, circles and triangles with common unit conversions.

Calculate volume for boxes, cylinders, spheres and cones with metric and imperial conversions.

Calculate population or sample standard deviation and variance from a data set.

Calculate mean, median, mode, range and count for a data set.