All Calculators
Every tool on TidyCalculator, organized by category. All free, all mobile-friendly, no sign-ups.
Concrete, asphalt, gravel, roofing, and framing.
Fence Calculator — Posts, Panels, Pickets & Cost
Work out exactly how many posts, panels, pickets, and rails you need for any fence project. Saves you from counting twice at the lumber yard.
Asphalt Calculator — Tonnage & Cost Estimator
Calculate tonnage and cost for driveway paving, resurfacing, or parking lot jobs. Works with standard hot-mix asphalt at any thickness.
Tile Calculator — Square Feet, Tiles & Waste
Work out exactly how many tiles you need, including waste for cuts and breakage. Works for any room size, any tile dimensions — floors, walls, backsplashes.
Concrete Calculator — Cubic Yards, Bags & Cost
Calculate exactly how much concrete you need for slabs, footings, sidewalks, or driveways. Results in cubic yards, 80lb bags, 60lb bags, and total cost.
Roof Pitch Calculator — Angle, Rise & Rafter Math
Convert rise and run into roof pitch, angle in degrees, and rafter length factor. Essential math for framing, re-roofing, or picking the right shingles.
Sand Calculator — Tons & Cubic Yards for Any Project
Calculate tons and cubic yards of sand for paver bases, sandboxes, playgrounds, or construction. Works with all sand types from masonry to play sand.
Gravel Calculator — Tons, Cubic Yards & Cost
Calculate gravel tonnage and cubic yards for driveways, walkways, drainage, or any landscape project. Works for pea gravel, crushed stone, and river rock.
Topsoil, mulch, soil, paint, and landscaping math.
Mulch Calculator — Cubic Yards & Bags Needed
Work out exactly how much mulch you need — in cubic yards or bags — before you head to the garden center. Works for wood chips, bark, and decorative mulches.
Topsoil Calculator — Cubic Yards, Tons & Bags
Figure out exactly how much topsoil you need — in cubic yards, tons, or bags — before you order. No guessing, no over-ordering.
Puppy weight, dog age, pregnancy, and safety tools.
Dog Age Calculator — Convert Dog Years Accurately
Convert your dog's age to human years with a modern, breed-adjusted formula. More accurate than the "multiply by 7" myth — size matters after year 2.
Dog Pregnancy Calculator — Due Date & Stages
Pick your dog's breeding date and get the expected whelping date, current week of pregnancy, and what's happening at each stage. Works for all breeds.
Cat Age Calculator — Cat Years to Human Years
Convert your cat's age to human years with a modern veterinary formula. See which life stage your cat is in and what care it needs at that age.
Puppy Weight Calculator — Predict Adult Size
Predict how big your puppy will get based on their current age, weight, and breed size. Most accurate between 14 and 26 weeks old.