A plan calls for a 5/16 inch hole, your drill set is metric, and the question is which millimetre size comes closest. Quick answer: turn the fraction into a decimal and multiply by 25.4. So 1/16 in is 1.5875 mm, 1/8 in is 3.175 mm, 5/16 in is 7.9375 mm and 1/2 in is 12.7…
A printer asks for a 3 mm bleed, your design software counts in points, and the bridge between the two is a factor of about 2.83. Quick answer: multiply the millimetres by 72 and divide by 25.4, which is about 2.8346. So 1 mm is 2.83 pt, 3 mm is 8.5 pt and 25.4 mm…
A label that says 25 mcg of vitamin D is the same dose as 1,000 IU. Quick answer: Multiply the mcg by 40. For example, 25 mcg is 1,000 IU, 10 mcg is 400 IU and 15 mcg is 600 IU. The vitamin D mcg to IU formula International units equal the micrograms times 40….
A designer hands over a layout in pixels, the printer wants millimetres, and the bridge is a single division by PPI and a multiplication by 25.4. Quick answer: divide the pixels by the PPI, then multiply by 25.4. At 96 PPI, 1 px is about 0.2646 mm and 100 px is 26.46 mm, while at…
One horsepower is 33,000 foot-pounds of work every minute, which is how the unit began. Quick answer: Multiply the horsepower by 33,000. For example, 1 hp is 33,000 ft-lbf/min, 10 hp is 330,000 ft-lbf/min and 100 hp is 3,300,000 ft-lbf/min. The hp to ft-lbf per minute formula Power in foot-pounds per minute equals horsepower times…
An 8 oz per square yard fabric weighs about 271 GSM. Quick answer: Multiply the ounces per square yard by 33.9057. For example, 8 oz/yd2 is 271.25 GSM, 7 oz/yd2 is 237.34 GSM and 12 oz/yd2 is 406.87 GSM. The oz to GSM formula GSM equals ounces per square yard times 33.9057. The last column…
The label on the cable says 12 gauge, the wire stripper has a notch for it, and the number that actually matters is how many thousandths of an inch the copper measures. Quick answer: for American Wire Gauge, the diameter in inches is 0.005 × 92^((36 − gauge) ÷ 39). So 12 AWG is 0.0808…
A rate of 90 cycles per minute is 1.5 Hz. Quick answer: Divide the cycles per minute by 60. For example, 90 cycles/min is 1.5 Hz, 900 cycles/min is 15 Hz and 9,000 cycles/min is 150 Hz. The cycles per minute to hertz formula Hertz equal cycles per minute divided by 60. One hertz is…
A cubic metre is 1,000 litres and an hour is 60 minutes. So 1 m³/h is 16.67 litres per minute. Quick answer: multiply the flow in m³/h by 16.667. For example, 10 m³/h is 166.67 LPM, 60 m³/h is 1,000 LPM and 100 m³/h is 1,666.67 LPM. The m³/h to LPM formula One m³ is…
You cannot turn kJ into kW with a single number. Energy needs a time, and the sum is power equals energy divided by time. Quick answer: divide the kilojoules by the seconds. For example, 7,200 kJ in 3,600 s is 2 kW, 5,000 kJ in 100 s is 50 kW and 1,000 kJ in 60…