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❤️ Health & fitnessFree
Weight Watchers points calculator
A serving with 150 kcal, 2 g of saturated fat, 12 g of sugar and 8 g of protein scores 3 SmartPoints.
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❤️ Health & fitnessFree
Weight week by week
Starting at 60 kg with a normal BMI, the expected weight is 65.25 kg at week 20 and 73.75 kg at week 40.
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❤️ Health & fitnessFree
Wells PE score calculator
Signs of DVT, PE as the leading diagnosis, a heart rate of 110 and a previous clot add up to 9 points: high probability, PE likely.
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🏗️ Engineering & constructionFree
AC BTU for room size
A 200 sq ft room with an 8 ft ceiling and average sun needs 4,000 BTU per hour, about a small bedroom window unit.
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🏗️ Engineering & constructionFree
Aluminum weight calculator
A bar 1 m long, 0.1 m wide and 0.01 m thick at 2700 kg/m³ weighs 2.7 kg. Enter the three sizes in metres and your alloy's density, such as 7075 at 2810, to plan…
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🏗️ Engineering & constructionFree
Miter saw angle calculator
A square 90-degree corner needs 45 on the saw table and 45 on the blade; a 135-degree bay needs 22.5 and 67.5.
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🏗️ Engineering & constructionFree
Circular arch calculator
An arch spanning 8 on a radius of 5 rises 2 at the crown, with a soffit arc of about 9.273 and a chord of 8, in whatever unit you use.
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🏗️ Engineering & constructionFree
Asphalt calculator
A lane 10 m long and 4 m wide with a 0.05 m compacted lift holds 2 m³ of asphalt, or 4.8 tonnes at 2.4 t/m³.
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🏗️ Engineering & constructionFree
Birdsmouth cut calculator
A 5.5-deep rafter at a 6/12 pitch on a 3.5-wide plate needs a seat length of 3.9131 and a cut depth of 1.5652, leaving 3.9348 of stock.
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🏗️ Engineering & constructionFree
Beam load calculator
A simply supported 4 m span under 10 kN/m carries 40 kN in total, with a 20 kN·m peak moment at midspan and 20 kN of peak shear at each support.
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🏗️ Engineering & constructionFree
Board foot calculator
A board 1 inch thick, 6 inches wide and 8 feet long is 4 board feet, or 576 cubic inches at 144 per board foot.
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🏗️ Engineering & constructionFree
Board-on-board fence calculator
A 100-unit fence run with 6-unit boards overlapping by 1 covers 5 units per board, so you need exactly 20 boards.
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🏗️ Engineering & constructionFree
Boiler size calculator
A 100 m² home with 2.4 m ceilings and average insulation has 240 m³ to heat at 80 W/m³, which is 19.2 kW, so a 20 kW boiler is the shortlist.
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🏗️ Engineering & constructionFree
Bolt circle calculator
Four holes on a 100 bolt circle centred at the origin, starting at 0°, land at (50, 0), (0, 50), (−50, 0) and (0, −50), 90° apart.
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🏗️ Engineering & constructionFree
Bolt tightening torque
An M10 bolt with friction 0.14 and a 20,000 N clamp load needs a few tens of newton-metres of torque, with a nut factor inside the usual 0.16–0.22 band.
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🏗️ Engineering & constructionFree
Bowl segment calculator
A bowl of radius 10 cm filled 4 cm deep holds 416π/3 cm³, with a liquid surface of rim radius 8 cm, shown in litres and US gallons as well.
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🏗️ Engineering & constructionFree
Cement calculator
A 4 × 3 m slab 100 mm thick at a 1:2:4 mix needs 8 bags of cement, 400 kg in all. Enter your pour and the mix to know the whole bags to buy for a patio, shed…
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🏗️ Engineering & constructionFree
CFM calculator
A 20 by 15 foot room with an 8 foot ceiling and 6 air changes per hour needs 240 CFM. Enter your room and the air changes you want to pick a fan that is neither…
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🏗️ Engineering & constructionFree
Concrete block fill calculator
One hundred 16 by 8 by 8 inch two-core blocks take about 1.226 cubic yards of grout. Enter your block count and size to order fill for a grouted wall, pilaster…
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🏗️ Engineering & constructionFree
Concrete tube calculator
A 12 inch tube form poured 4 feet deep holds just over 3 cubic feet of concrete: 6 bags of 80 lb. Enter the inside diameter and the pour height before the…
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🏗️ Engineering & constructionFree
Concrete weight calculator
Two cubic feet of concrete at 150 pounds per cubic foot weigh 300 pounds. Enter the volume and the density from your mix ticket or lab test to know what a…
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🏗️ Engineering & constructionFree
Decking calculator
A 12 by 10 foot deck with 5.5 inch boards and a 1/8 inch gap takes 22 boards, 264 linear feet in all.
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🏗️ Engineering & constructionFree
Drywall calculator
A 5 by 4 m room with 2.4 m walls has 43.2 m² to board: 15 sheets of 2.4 × 1.2 m. List every wall run, closets included, and get a whole-sheet count before the…
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🏗️ Engineering & constructionFree
Elevation grade calculator
A rise of 1 over a run of 12 is an 8.333 % grade, an angle of about 4.76 degrees: the classic wheelchair-ramp slope.
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🏗️ Engineering & constructionFree
Fence estimate calculator
A 100 foot run, 6 feet high with posts every 8 feet, takes 14 posts, 39 rails and 301 pickets. Add the prices the lumber yard gave you and get the material list…
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🏗️ Engineering & constructionFree
Fence post burial depth
An 8 ft post where frost reaches 4 ft must go 4 ft deep and leaves 4 ft above ground. The hole is one third of the post or the frost line, whichever is deeper…
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🏗️ Engineering & constructionFree
Fire flow calculator
A 10,000 square foot wood-frame building needs about 2750 gallons per minute of fire flow. Enter the floor area and how the building is built to get the…
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🏗️ Engineering & constructionFree
Wall framing calculator
A 10 foot wall, 8 feet high, with studs 16 inches on center and one door takes 11 studs and 3 plates, 14 pieces in all.
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🏗️ Engineering & constructionFree
French drain calculator
A 50 foot French drain trench 1 foot wide and 2 feet deep takes about 3.7037 cubic yards of gravel and 50 feet of pipe.
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🏗️ Engineering & constructionFree
Square feet to cubic yards
1000 square feet covered 3 inches deep is 250 cubic feet, a little over 9 cubic yards. Enter the area you measured and the depth on the spec to order bulk…
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🏗️ Engineering & constructionFree
Glass pane weight calculator
A 36 by 24 inch pane, a quarter inch thick at 0.090 pounds per cubic inch, weighs 19.44 pounds. Enter the size and the density of your glass to plan freight…
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🏗️ Engineering & constructionFree
Gravel driveway calculator
A 50 by 12 foot driveway with 4 inches of gravel takes 7.4074 cubic yards, about 10.3704 tons at 1.4 tons per yard.
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🏗️ Engineering & constructionFree
Grout calculator
Ten square metres of 300 × 300 mm tiles with 3 mm joints filled 8 mm deep take about 1.6 litres of grout, a little over 2 kg.
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🏗️ Engineering & constructionFree
Hoop house calculator
A 48 by 12 foot hoop house with hoops every 4 feet needs 13 hoops and just over 1000 square feet of film for the tunnel and both end walls.
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🏗️ Engineering & constructionFree
Sprinkler K-factor calculator
A sprinkler flowing 22.4 gallons per minute at 16 psi has a K-factor of 5.6, the standard half-inch head.
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🏗️ Engineering & constructionFree
Limestone calculator
A 20 by 10 foot pad with a 6 inch base of crushed limestone at 95 pounds per cubic foot is 100 cubic feet and 4.75 short tons.
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🏗️ Engineering & constructionFree
Log weight calculator
A 12 inch log 8 feet long at 40 pounds per cubic foot weighs well over 100 kg, and the result gives the exact pounds and kilograms.
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🏗️ Engineering & constructionFree
Lumber calculator
Covering 16 by 10 feet with 8 foot boards 0.5 feet wide, a 0.01 foot gap and 10 % waste takes 44 boards.
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🏗️ Engineering & constructionFree
Miter angle calculator
A square 90 degree corner takes a 45 degree cut on each piece, a hexagon planter 30 degrees and an octagon frame 22.5.
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🏗️ Engineering & constructionFree
Paver sand calculator
A 200 square foot patio on a 1 inch bed of sand needs a little more than half a cubic yard of bedding sand.
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🏗️ Engineering & constructionFree
Pipe weight calculator
A steel pipe with a 100 mm outer diameter, a 5 mm wall and 6 m of length weighs about 70.3 kg. Enter the four measurements and get the mass of the wall itself…
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🏗️ Engineering & constructionFree
Plywood calculator
A 16 by 8 floor covered with 8 by 4 sheets takes exactly 4 boards. Enter the surface and your sheet size, and the count is rounded up so a leftover strip still…
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🏗️ Engineering & constructionFree
Pond volume calculator
A pond 20 ft long, 10 ft wide and 3 ft deep on average holds 600 cubic feet of water, shown in US gallons and liters too.
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🏗️ Engineering & constructionFree
Post hole concrete calculator
Eight 12-inch holes, 36 inches deep, around 4 by 4 posts need a little under six tenths of a cubic yard, because each post displaces 576 cubic inches of mix.
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🏗️ Engineering & constructionFree
Retaining wall calculator
A wall 10 m long and 1.2 m high built from 0.4 by 0.2 m blocks takes 150 wall blocks plus 20 cap units of 0.5 m: two separate order lines, each rounded up to…
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🏗️ Engineering & constructionFree
Rip-rap calculator
A 120 m² slope armored 0.45 m thick with stone at 1.65 t/m³ needs 54 m³ of layer, or 89.1 tonnes to order from the quarry.
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🏗️ Engineering & constructionFree
Road base calculator
A road section 100 ft long and 12 ft wide with 6 inches of compacted base needs 600 cubic feet, which weigh 40 tons at 1.8 tons per cubic yard.
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🏗️ Engineering & constructionFree
Roof truss calculator
A gable roof 24 wide at a 6 in 12 pitch, with trusses every 2 along a 40 ridge, needs rafters of about 13.4 from plate to ridge and 21 trusses.
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🏗️ Engineering & constructionFree
Round pen calculator
A round pen 50 across built from 12-long panels needs 14 panels, which cover 168 of length around the circle.
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🏗️ Engineering & constructionFree
Sealant calculator
A 50-foot joint a quarter inch wide and a quarter inch deep holds 37.5 cubic inches of sealant, so you buy 3 standard 10.1-ounce tubes.
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🏗️ Engineering & constructionFree
Siding calculator
A 1400 sq ft elevation with 200 sq ft of windows and doors leaves 1200 to clad: 12 squares, or 60 panels that cover 20 sq ft each.
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🏗️ Engineering & constructionFree
Snow load calculator
A 40 psf ground snow load with all three factors at 1.0 gives a 28 psf roof design load, because the roof carries 0.7 of the ground pack and 28 is above the 20…
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🏗️ Engineering & constructionFree
Sonotube calculator
Four 12-inch tubes filled 4 feet high take 21 bags of 80-pound concrete, at 0.60 cubic feet per bag.
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Spiral staircase calculator
A 3000 mm rise in a 900 mm radius with 250 mm treads gives 23 treads and a stair that turns slightly more than 360 degrees.
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🏗️ Engineering & constructionFree
Square yards calculator
A room 27 ft by 12 ft is 324 square feet, which is exactly 36 square yards, because one square yard holds 9 square feet.
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Steel weight calculator
A steel plate 2 m long, 1000 mm wide and 10 mm thick weighs 157 kg, about 346 lb, at the standard 7850 kg/m³.
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Taper calculator
A part that goes from 1 inch to 0.5 inch over 4 inches has a taper of 0.125 per inch and a half-angle of a little over three and a half degrees.
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🏗️ Engineering & constructionFree
Thread calculator
An M8 thread has a 1.25 mm pitch and needs a tap drill of about 6.8 mm for a 75 percent thread. Enter a metric or Unified size, pick the standard, and get the…
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🏗️ Engineering & constructionFree
Cooling tonnage calculator
A 400 sq ft room with an 8 ft ceiling in a temperate climate needs about 8000 BTU per hour, two thirds of a ton, so the next equipment step is a 1-ton unit.
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True position calculator
A hole measured 0.012 off in X and 0.008 off in Y has a true position of twice the hypotenuse of those two misses, the diametral value the drawing tolerance…
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