thumb|right|500px|Forbrugerindeks Et forbrugerprisindeks (FPI) er et mål for den gennemsnitlige pris af forbrugsvarer og tjenesteydelser, som købes af husholdningerne. Det er et af flere prisindeks, som udregnes af nationale statistiske kontorer. Den procentvise ændring af FPI er et mål for inflationen. FPI kan bruges til at indeksere (dvs. justere for følgerne af inflation) løn, pensioner, eller regulerede eller faldende priser. FPI er, sammen med folketællinger og opgørelser af nationalindkomst og nationalprodukt, et af de mest fulgte statistikker for den nationale økonomi.
Sådan udregnes stigningstakten
For eksempel, i februar 2008 var det danske forbrugerprisindeks 117,1 og i februar 2009 var det 119,3. Formlen for at finde 12-måneders forandringen – stigningstakten – er:
Det ses at stigningstaten for FPI på disse 12 måneder er 1,87 %, hvilket betyder at det generelle niveau for de priser, som typiske danske forbrugere skulle betale steg omkring to procent på disse 12 måneder.
Udviklingen af det danske forbrugerprisindeks siden 1980
FPI i Danmark (2000=100) <small>og Inflationstakt (12-mdrs. forandring) i Danmark og Sverige (i pct.)</small> ÅrJan FebMarAprMaj JunJulAugSepOktNovDec 198043,2 43,7 44,3 44,6 45,2 45,3 46,246,3 46,6 46,9 47,347,5 N/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/A 12,713,513,413,613,313,113,212,315,015,514,614,1 198147,848,349,349,950,751,251,551,752,252,553,153,3 10,610,511,311,912,213,011,511,712,011,912,312,2 12,512,913,012,913,213,313,413,611,310,410,29,1 198253,75454,554,855,455,956,357,3585858,558,1 12,311,810,59,89,39,29,39,79,810,510,29,0 9,59,08,78,78,58,58,37,77,58,38,89,7 198358,658,858,65959,759,859,960,160,861,161,661,7 9,18,97,57,77,87,06,46,06,15,35,36,2 9,78,28,38,48,78,99,09,29,58,88,69,2 198461,962,562,862,963,663,963,864,164,564,865,365,1 1,10,90,70,81,31,11,31,21,11,71,31,2 8,37,89,08,88,98,17,57,77,77,37,38,2 198565,465,866,366,667,16766,866,76767,267,567,4 5,65,35,65,95,54,84,74,13,93,73,43,5 7,38,78,07,78,28,17,76,96,76,86,95,6 198667,367,267,569,269,869,769,269,670,170,270,470,4 2,92,11,83,94,04,03,64,34,64,54,34,4 6,25,34,34,63,43,74,04,04,54,23,53,3 198770,570,471,171,472,1727272,272,67373,273,2 4,74,85,33,23,33,34,03,73,64,04,04,0 3,13,43,83,43,53,34,35,05,05,15,45,1 198873,674,174,474,775,375,37575,575,97676,676,6 4,45,34,64,64,44,64,24,64,54,14,64,6 4,75,25,56,16,46,96,15,85,65,95,86,0 198976,977,477,978,47978,778,779,279,579,980,380,3 4,54,44,74,94,94,54,94,94,75,14,84,8 6,66,46,46,46,56,66,16,36,46,56,56,6 199079,88080,280,380,980,780,481,281,982,18281,8 1,10,90,70,81,31,11,31,21,11,71,31,2 8,37,89,08,88,98,17,57,77,77,37,38,2 199181,8 82,0 82,1 82,3 82,9 83,0 82,882,9 83,4 83,5 83,9 83,7 2,52,52,42,52,52,83,02,11,81,72,32,3 10,413,110,410,710,110,19,18,28,17,87,97,9 199283,583,984,284,4858584,684,78584,985,184,9 2,12,32,62,52,52,42,22,21,91,71,41,4 5,22,42,52,22,22,01,92,12,52,31,31,9 199384,88585,285,385,885,785,685,78686,286,486,2 1,61,31,21,10,90,81,21,21,21,51,51,5 4,85,05,05,24,94,84,84,84,24,34,94,1 199486,386,686,78787,487,587,387,787,787,988,288,1 1,81,91,82,01,92,12,02,32,02,02,12,2 1,61,71,61,62,12,42,62,62,62,42,32,5 199588,288,688,989,189,589,388,989,189,689,689,889,8 2,22,32,52,42,42,11,81,62,21,91,81,9 2,52,62,62,92,82,62,52,32,12,22,22,1 | {| border="1" cellpadding="1" cellspacing="0" style="margin: 10px 0 10px 25px; background: e7dcc3; border: 1px #AAA solid; border-collapse: collapse; font-size: 110%; float: center;" |- style="background: e7dcc3;" |colspan ="13" style="background: #e7dcc3; font-size: 110%" align="center" |FPI i Danmark (2000=100) <small>og Inflationstakt (12-mdrs. forandring) i Danmark og Sverige (i pct.)</small> |- |width="65"|År |Jan |Feb |Mar |Apr |Maj |Jun |Jul |Aug |Sep |Okt |Nov |Dec
| rowspan="1" style="background: #e7dcc3; font-size: 110%" align="center"| 1996 |style="background: #e7dcc3; font-size: 80%" align="center"|89,7 |style="background: #e7dcc3; font-size: 80%" align="center"|90,2 |style="background: #e7dcc3; font-size: 80%" align="center"|90,7 |style="background: #e7dcc3; font-size: 80%" align="center"|90,9 |style="background: #e7dcc3; font-size: 80%" align="center"|91,2 |style="background: #e7dcc3; font-size: 80%" align="center"|91,1 |style="background: #e7dcc3; font-size: 80%" align="center"|91 |style="background: #e7dcc3; font-size: 80%" align="center"|91,1 |style="background: #e7dcc3; font-size: 80%" align="center"|91,6 |style="background: #e7dcc3; font-size: 80%" align="center"|91,8 |style="background: #e7dcc3; font-size: 80%" align="center"|91,9 |style="background: #e7dcc3; font-size: 80%" align="center"|91,8
| rowspan="1" | |style="background: #ffffff; font-size: 80%" align="center"|1,7 |style="background: #ffffff; font-size: 80%" align="center"|1,8 |style="background: #ffffff; font-size: 80%" align="center"|2,0 |style="background: #ffffff; font-size: 80%" align="center"|2,0 |style="background: #ffffff; font-size: 80%" align="center"|1,9 |style="background: #ffffff; font-size: 80%" align="center"|2,0 |style="background: #ffffff; font-size: 80%" align="center"|2,4 |style="background: #ffffff; font-size: 80%" align="center"|2,2 |style="background: #ffffff; font-size: 80%" align="center"|2,2 |style="background: #ffffff; font-size: 80%" align="center"|2,5 |style="background: #ffffff; font-size: 80%" align="center"|2,3 |style="background: #ffffff; font-size: 80%" align="center"|2,2
| rowspan="1" | |style="background: #ffffff; font-size: 80%" align="center"|1,6 |style="background: #ffffff; font-size: 80%" align="center"|1,3 |style="background: #ffffff; font-size: 80%" align="center"|1,4 |style="background: #ffffff; font-size: 80%" align="center"|1,0 |style="background: #ffffff; font-size: 80%" align="center"|0,8 |style="background: #ffffff; font-size: 80%" align="center"|0,6 |style="background: #ffffff; font-size: 80%" align="center"|0,4 |style="background: #ffffff; font-size: 80%" align="center"|0,1 |style="background: #ffffff; font-size: 80%" align="center"|0,0 |style="background: #ffffff; font-size: 80%; color:#FF0033" align="center"|0,2 |style="background: #ffffff; font-size: 80%; color:#FF0033" align="center"|0,3 |style="background: #ffffff; font-size: 80%; color:#FF0033" align="center"|0,2
| rowspan="1" style="background: #e7dcc3; font-size: 110%" align="center"| 1997 |style="background: #e7dcc3; font-size: 80%" align="center"|92,1 |style="background: #e7dcc3; font-size: 80%" align="center"|92,1 |style="background: #e7dcc3; font-size: 80%" align="center"|92,2 |style="background: #e7dcc3; font-size: 80%" align="center"|92,5 |style="background: #e7dcc3; font-size: 80%" align="center"|93,1 |style="background: #e7dcc3; font-size: 80%" align="center"|93,3 |style="background: #e7dcc3; font-size: 80%" align="center"|93,1 |style="background: #e7dcc3; font-size: 80%" align="center"|93,5 |style="background: #e7dcc3; font-size: 80%" align="center"|93,7 |style="background: #e7dcc3; font-size: 80%" align="center"|93,7 |style="background: #e7dcc3; font-size: 80%" align="center"|93,9 |style="background: #e7dcc3; font-size: 80%" align="center"|93,8
| rowspan="1" | |style="background: #ffffff; font-size: 80%" align="center"|2,7 |style="background: #ffffff; font-size: 80%" align="center"|2,1 |style="background: #ffffff; font-size: 80%" align="center"|1,6 |style="background: #ffffff; font-size: 80%" align="center"|1,8 |style="background: #ffffff; font-size: 80%" align="center"|2,1 |style="background: #ffffff; font-size: 80%" align="center"|2,4 |style="background: #ffffff; font-size: 80%" align="center"|2,3 |style="background: #ffffff; font-size: 80%" align="center"|2,6 |style="background: #ffffff; font-size: 80%" align="center"|2,3 |style="background: #ffffff; font-size: 80%" align="center"|2,1 |style="background: #ffffff; font-size: 80%" align="center"|2,2 |style="background: #ffffff; font-size: 80%" align="center"|2,2
| rowspan="1" | |style="background: #ffffff; font-size: 80%; color:#FF0033" align="center"|0,1 |style="background: #ffffff; font-size: 80%; color:#FF0033" align="center"|0,2 |style="background: #ffffff; font-size: 80%; color:#FF0033" align="center"|0,3 |style="background: #ffffff; font-size: 80%; color:#FF0033" align="center"|0,1 |style="background: #ffffff; font-size: 80%" align="center"|0,1 |style="background: #ffffff; font-size: 80%" align="center"|0,6 |style="background: #ffffff; font-size: 80%" align="center"|0,6 |style="background: #ffffff; font-size: 80%" align="center"|1,1 |style="background: #ffffff; font-size: 80%" align="center"|1,5 |style="background: #ffffff; font-size: 80%" align="center"|1,5 |style="background: #ffffff; font-size: 80%" align="center"|1,5 |style="background: #ffffff; font-size: 80%" align="center"|1,6
| rowspan="1" style="background: #e7dcc3; font-size: 110%" align="center"| 1998 |style="background: #e7dcc3; font-size: 80%" align="center"|93,7 |style="background: #e7dcc3; font-size: 80%" align="center"|94,1 |style="background: #e7dcc3; font-size: 80%" align="center"|94,3 |style="background: #e7dcc3; font-size: 80%" align="center"|94,5 |style="background: #e7dcc3; font-size: 80%" align="center"|95 |style="background: #e7dcc3; font-size: 80%" align="center"|94,9 |style="background: #e7dcc3; font-size: 80%" align="center"|94,8 |style="background: #e7dcc3; font-size: 80%" align="center"|94,9 |style="background: #e7dcc3; font-size: 80%" align="center"|95,3 |style="background: #e7dcc3; font-size: 80%" align="center"|95,3 |style="background: #e7dcc3; font-size: 80%" align="center"|95,5 |style="background: #e7dcc3; font-size: 80%" align="center"|95,4
| rowspan="1" | |style="background: #ffffff; font-size: 80%" align="center"|1,7 |style="background: #ffffff; font-size: 80%" align="center"|2,2 |style="background: #ffffff; font-size: 80%" align="center"|2,3 |style="background: #ffffff; font-size: 80%" align="center"|2,2 |style="background: #ffffff; font-size: 80%" align="center"|2,0 |style="background: #ffffff; font-size: 80%" align="center"|1,7 |style="background: #ffffff; font-size: 80%" align="center"|1,8 |style="background: #ffffff; font-size: 80%" align="center"|1,5 |style="background: #ffffff; font-size: 80%" align="center"|1,7 |style="background: #ffffff; font-size: 80%" align="center"|1,7 |style="background: #ffffff; font-size: 80%" align="center"|1,7 |style="background: #ffffff; font-size: 80%" align="center"|1,7
| rowspan="1" | |style="background: #ffffff; font-size: 80%" align="center"|0,7 |style="background: #ffffff; font-size: 80%" align="center"|0,6 |style="background: #ffffff; font-size: 80%" align="center"|0,3 |style="background: #ffffff; font-size: 80%" align="center"|0,1 |style="background: #ffffff; font-size: 80%" align="center"|0,3 |style="background: #ffffff; font-size: 80%" align="center"|0,0 |style="background: #ffffff; font-size: 80%; color:#FF0033" align="center"|0,1 |style="background: #ffffff; font-size: 80%; color:#FF0033" align="center"|0,6 |style="background: #ffffff; font-size: 80%; color:#FF0033" align="center"|1,2 |style="background: #ffffff; font-size: 80%; color:#FF0033" align="center"|1,0 |style="background: #ffffff; font-size: 80%; color:#FF0033" align="center"|1,1 |style="background: #ffffff; font-size: 80%; color:#FF0033" align="center"|1,2
| rowspan="1" style="background: #e7dcc3; font-size: 110%" align="center" | 1999 |style="background: #e7dcc3; font-size: 80%" align="center"|95,3 |style="background: #e7dcc3; font-size: 80%" align="center"|96 |style="background: #e7dcc3; font-size: 80%" align="center"|96,5 |style="background: #e7dcc3; font-size: 80%" align="center"|96,7 |style="background: #e7dcc3; font-size: 80%" align="center"|96,9 |style="background: #e7dcc3; font-size: 80%" align="center"|97,2 |style="background: #e7dcc3; font-size: 80%" align="center"|97 |style="background: #e7dcc3; font-size: 80%" align="center"|97,5 |style="background: #e7dcc3; font-size: 80%" align="center"|98 |style="background: #e7dcc3; font-size: 80%" align="center"|98,1