Pool & Water calculators

• Pool Volume Calculator Calculate your pool volume in gallons, liters, and cubic feet from its dimensions.
• Pool Chemical Calculator Get exact doses for chlorine, shock, pH, and alkalinity.
• Saltwater Pool Calculator Find out how much pool salt to add to reach your target salinity.
• Pool Chlorine Calculator Calculate how much liquid chlorine, granular dichlor, or household bleach to add to reach your target free chlorine level.
• Pool Shock Calculator Get the exact amount of cal-hypo shock to add for a clean, clear pool.
• Muriatic Acid Pool Calculator Calculate how much muriatic acid to add to lower pH or reduce high alkalinity.

Yard & Garden calculators

• Lawn Fertilizer Calculator Get the exact amount of fertilizer, bags, and cost for your lawn based on grass type and N-P-K ratio.
• Concrete / Mulch Volume Calculator Calculate cubic yards, bag counts, and cost for concrete, mulch, soil, or gravel — for rectangle or circle areas, with metric support.
• Gravel Calculator Calculate how much gravel you need in cubic yards and tons for pea gravel, crushed stone, river rock, and more — with a compaction buffer, editable density, and cost.
• Topsoil Calculator Work out how much topsoil you need in cubic yards, tons and bags for a new lawn, raised bed or top-dressing, with several areas, a settling buffer and a bulk vs bag cost comparison.
• Sod Calculator Work out square feet, slabs or rolls, pallets and installation cost for new sod, with editable pallet coverage.
• Grass Seed Calculator Get pounds of seed, bags and cost for a new lawn or overseeding, using university extension seeding rates by grass type.
• Deck Calculator Work out deck boards, joists, beams, posts, footings, screws, railing and stairs for a wood, composite or PVC deck, with diagonal and herringbone waste and an optional cost.
• Fence Calculator Work out fence posts, rails, pickets, post depth and concrete bags for a wood privacy or picket fence, with gates, corners and an optional cost estimate.

Home Projects calculators

• Light Bulb & Lumens Calculator Calculate the lumens your room needs, bulb count, wattage equivalents, and estimated running cost.
• Paint Calculator Work out how many gallons a room needs, with doors and windows subtracted, coats multiplied, and texture accounted for.
• Tile Calculator Find out how many tiles and boxes you need for any room.
• Square Footage / Flooring Cost Calculator Calculate total square footage, boxes, and cost across multiple rooms in one project.
• Area Calculator Calculate the area of a rectangle, square, triangle, circle, trapezoid, parallelogram, or ellipse in any unit.
• Fabric & Sewing Calculator Calculate fabric yardage, waste/seam allowance buffer, and total cost in one tool.