All calculators

Estimate gravel volume, weight, bags and cost for driveways, patios and landscaping.

Cubic yards of concrete needed for slabs, footings and columns.

Volume and weight of sand needed for a project.

Cubic yards and 2 cu ft bags of mulch for garden beds.

Topsoil volume for garden beds and raised planters.

Tons of asphalt needed for driveways and lots.

Number of pavers needed for a patio or walkway.

Number of bricks for walls and facades.

Tiles and boxes needed for a room.

Gallons of paint needed for walls.

Square feet and boxes of flooring needed.

Roofing squares and shingle bundles.

Sheets of drywall for walls and ceilings.

Stair rise, run and step count from total height.

Posts, pickets and rails for a fence.

Deck boards and joists for a wood deck.

Water volume of a rectangular swimming pool.

Monthly mortgage payment from loan, rate and term.

Monthly loan payment for any amortized loan.

Simple interest earned over a period.

Future value with compound growth.

Return on investment percentage and profit.

Gross profit margin percentage.

Units to sell to cover fixed costs.

Convert hourly, weekly, monthly and annual pay.

Add or remove sales tax from a price.

Final price after a percentage discount.

Tip amount and split per person.

What is X% of Y and other percentage questions.

Body Mass Index from height and weight.

Daily calorie needs (Mifflin-St Jeor).

Recommended daily water intake.

Age in years, months and days from a birth year.

Days between two dates (from day-of-year).

Total hours from start and end minutes.

Trip cost from distance, MPG and gas price.

Miles per gallon from miles driven and gallons used.

Cost to charge an EV from empty to full.

Ad spend from clicks and CPC.

Convert between CPM, CPC and CPA metrics.

Estimated revenue from ranking on a keyword.

Estimated ad-equivalent value of organic traffic.

Effective hourly rate after unpaid overhead.

Compare AI vs human content production costs.

Number of dump truck deliveries needed.

What a measurement mistake costs you.

Compare a contractor quote to material + labor estimate.

Estimate pea gravel volume, weight, bags and cost for walkways, patios, playgrounds and drainage.

Cubic yards, tons and cost of crushed stone for driveways, base layers and drainage.

River rock volume, weight and cost for landscaping beds and drainage.

Decomposed granite (DG) volume, weight and cost for paths and patios.

Limestone volume, weight and cost for driveways and base layers.

Gravel needed for a driveway, sized in yards, tons and delivery loads.

Decorative landscape rock volume, weight and cost.

Drainage rock for French drains, dry wells and yard drainage.

Gravel volume for a French drain trench.

Gravel for a garden path or walkway.

Gravel needed for a pea-gravel or crushed-stone patio.

Total gravel driveway cost: material, delivery and depth.

Total gravel cost from area, depth and price per ton.

Recommended depth by project type and gravel size.

How many bags of gravel you need.

Tons of gravel needed for a project.

Cubic yards of gravel needed.

Delivery loads and total delivered cost.

Topsoil volume in cubic yards and tons.

Compost needed for garden beds and lawns.

Square feet, rolls and pallets of sod needed.

Lawn area from length and width, plus seed estimate.

Soil volume for a raised garden bed.

Blocks needed for a retaining wall.

Bags of Portland cement for a concrete mix.

Cubic yards and bags of concrete for a slab.

Concrete for a strip or column footing.

Concrete blocks needed for a wall.

Solve A:B = C:D for the missing value.

Mean of a comma-separated list of numbers.

Area of rectangles, circles and triangles.

Volume of boxes, cylinders and spheres.

Add, subtract, multiply and divide fractions.

Convert between meters, feet, inches and yards.

Convert between kilograms, pounds, tons and ounces.

Convert Celsius, Fahrenheit and Kelvin.

Jump-off to length, weight and temperature converters.

Extra material to order for waste, cuts and mistakes.

Compare price per unit across two suppliers.

How much you'll spend over budget at a given overrun rate.

Compare cost of overbuying vs re-ordering short.

Total delivered price with a per-distance fee.

Sum materials, labor, permits and a contingency line.

Debris volume and dumpster size for a renovation.

Floor area needed to stage delivered materials.

How many truckloads to move a given weight or volume.

Compute voltage, current, resistance and power using Ohm's law.

Estimate electrical energy use and cost from wattage and run time.

Compute the kinetic energy of a moving object.

Compute PE = mgh for an object at a height.

Compute force from mass and acceleration.

Compute density from mass and volume (ρ = m/V).

Compute molar concentration from moles and solution volume.

Convert between H⁺ concentration and pH.

Convert between wavelength and frequency using c = fλ.

Solve d = v × t for any missing value.

Compute range, height and time of flight for a projectile.

Solve PV = nRT for pressure, volume, moles or temperature.

Compute the remaining amount of a decaying substance over time.

Look up resistor values from the standard 4-band color code.