﻿UNIT·CONVERSIONS .Aim..\ l ~q6~te:z~timeter = 0.155 square inch t sg~~te nietyr = 10.764 square reet l li.ootare = 2.411 acres 1 hebt~re ...... io,ooo square meters l s.quare kilometer = 0.3863 square miles l lleerare = 0.003863 square :miles DENSITY 1 square in()'h = 6.4516 square centimeters 1 sq.u~re. foot = 0.0929 square meters 1 acre = 0.4047 hedare~ l acre = 43tS60 square feet i square rnHe = 2.589 squn.re kilometers 1 square mile = 2S8.9 hectares 1000 kilograms per cubic rneter = L 94. shtgs per- t:ubk foot 1 slug per cubic foot = SlS.S kilograms per cubic meter DISCHARGE (FLOW RATE} 1 cubic meter pet second = 35.31:5 cubic foot per second i eub1c foot per second = 0.028317 cubic meters per second 1000 .gallons per rninute ::;;;: 2.2tJ.8 c~bic, fee~ per second 1 milllo.n gallon.:; per d~~ = 0;043.8 cu1;)lc lT\Ct .ENERGY (\VORKOR QU 1 joule ·= l newton·;rne:ter l j.mde = 1 calorie = 1 kilowatt~hou:r = 1 kilowatt · FORCE (WEIGHT! l ne\vtotl ;;:::;: 0.2247 pounds 1 kilogram = 2.2046 pounds l kilogram. = 9.81 new'tt = 0.3048 m~ters 1 mile = L609 kilometers 1 yard = 0.9144 meters 1 pound .::::::. 0.4536 kilogram.s l slug = 14.6 kilograms 1 horsepower = 550 foot-pound per second l horsepower = 746 watts 1 horsepower = 0. 746 kil.owatts l lb per square lnc.h = 6.8972 kilopasca!s 1 lb per square inch = 689't2 pascals SPECIFIC WEIGHT l newton pt:r cubic meter = (L0063636 p<>unds pet cubic foot l pound per cubic foot = 14 n¢wions per c~1bic meter VELOCITY 1 meter per second = 3.28 fe-et per second I kilometer pt.:r hour = 0.6215 miles pet hour VlSCOSlTY !ABSOLUTE) 1 poise = 0.1 .tH!\Vton"second per square meter = 0.0020878 lb.second square foot l centipoise = 0.01 poise VISCOSITY (KINEMATlC) I stoke = 1 square centimeter per second l centistoke = O.Ol stoke 1 centistoke ±::::: 0.000001 stzuare meter per second l centistoke = 0.000010764 square feet per second VOLUI\tE 1 liter = 0.1642 U . . gallons l liter = 0.03531:5 cubic feet t liter = 0.001 cubic meter l cubic meter = 35,315 cubic feet 1 cubic meter= 1.308 cubic yards 1 cubic meter = 264.%7 U.S. gallons l cubic hectometer = l million cubic rneters 1 cu hie hectometer = 81.0. 7! acre· feet 10,000 cubic meters == 4.0873 (ft3 f:sl·day ! foot per second = 0.3048 met~rs pet serond 1 mile per hour :::=: 1.609 kilometers per hour l HHeeond per square foot = 478.97 poise l lb·second per square foot = 47897 centipoise 1 square foot per second = 929.03 stoke 1 square foot per second = 92,903 centistol-:e 1 U.S. gaJlon = 3. 78541itcrs 1 cubic foot = 28.317 liters l U.S. gallon = 0.13368 cubic feet l cu bic foot = 0.028311 cubic meters l cubic yard = 0. 7646 cubic meters 1 m.illirm U.S. gallons = 3185.4 <:ubi.c meters 1 million cubic .feet= 28,317 cubk meters l acre·foot = l2JJ.S cubic meters l (ffls)·day = 2446.6 cubic meters l (ftl/ s).day ; 1.983 acre·feet • COMMON CONSTANTS ·GRAVITATIONAL ACC.ELERATION 9.8l' t:ttet~rs per square second 98t,centimeters per square second TI OF W ATEB (:4.T. 4°C) 1000 kilograms per cubic meter I gram per cubic centimeter t ~md 760 mm Hg: kiLoriewtons per cubic meter .2°C and 760 mm Hg: 9.789 k'ilonewtons per cubic meter 32...t7 feet persquare second 1. 94 slugs per cubk foot L94 (lb·f)-s2'/ft4 62.43 tb·f cubic foot 61.32 lb~f per cubic foot ARD SEA-LEVE.L AT!VlO.SPHERIC PRESSURE per square meter eters of Hg meters of H20 l4.7lb per square inch 29.92 in. Hg 33,9 ft o.f H20