PX to REM Converter

Easily convert between pixels (px) and rem units, based on a root font-size of 16px.

How to Use This PX to REM Converter

Our calculator instantly converts between CSS pixels (px) and relative REM units. Simply enter a value in either field to see the conversion. The calculation is based on the standard root font-size of 16px, where 1rem = 16px (1px = 0.0625rem).

Why Use REM Units in CSS?

REM (Root EM) units are relative to the root HTML element's font-size, making them perfect for responsive, accessible web design:

  • Better accessibility - respects user's browser font-size preferences
  • Easier responsive scaling - change root size to adjust all elements
  • More consistent than EM units - not affected by parent element sizes
  • Modern best practice - recommended for responsive layouts

EM vs REM: Key Differences

While both are relative units, EM is relative to the parent element's font-size, creating compounding issues in nested elements. REM is always relative to the root (html) font-size, providing consistent sizing throughout your document.

PX to REM Conversion Table

PixelsREM
1px0.0625rem
2px0.125rem
3px0.1875rem
4px0.25rem
5px0.3125rem
6px0.375rem
7px0.4375rem
8px0.5rem
9px0.5625rem
10px0.625rem
11px0.6875rem
12px0.75rem
13px0.8125rem
14px0.875rem
15px0.9375rem
16px1rem
17px1.0625rem
18px1.125rem
19px1.1875rem
20px1.25rem
21px1.3125rem
22px1.375rem
23px1.4375rem
24px1.5rem
25px1.5625rem
26px1.625rem
27px1.6875rem
28px1.75rem
29px1.8125rem
30px1.875rem
31px1.9375rem
32px2rem
33px2.0625rem
34px2.125rem
35px2.1875rem
36px2.25rem
37px2.3125rem
38px2.375rem
39px2.4375rem
40px2.5rem
41px2.5625rem
42px2.625rem
43px2.6875rem
44px2.75rem
45px2.8125rem
46px2.875rem
47px2.9375rem
48px3rem
49px3.0625rem
50px3.125rem
51px3.1875rem
52px3.25rem
53px3.3125rem
54px3.375rem
55px3.4375rem
56px3.5rem
57px3.5625rem
58px3.625rem
59px3.6875rem
60px3.75rem
61px3.8125rem
62px3.875rem
63px3.9375rem
64px4rem
65px4.0625rem
66px4.125rem
67px4.1875rem
68px4.25rem
69px4.3125rem
70px4.375rem
71px4.4375rem
72px4.5rem
73px4.5625rem
74px4.625rem
75px4.6875rem
76px4.75rem
77px4.8125rem
78px4.875rem
79px4.9375rem
80px5rem
81px5.0625rem
82px5.125rem
83px5.1875rem
84px5.25rem
85px5.3125rem
86px5.375rem
87px5.4375rem
88px5.5rem
89px5.5625rem
90px5.625rem
91px5.6875rem
92px5.75rem
93px5.8125rem
94px5.875rem
95px5.9375rem
96px6rem
97px6.0625rem
98px6.125rem
99px6.1875rem
100px6.25rem

REM to PX Conversion Table

REMPixels
0.01rem0.16px
0.06rem0.96px
0.11rem1.76px
0.16rem2.56px
0.21rem3.36px
0.26rem4.16px
0.31rem4.96px
0.36rem5.76px
0.41rem6.56px
0.46rem7.36px
0.51rem8.16px
0.56rem8.96px
0.61rem9.76px
0.66rem10.56px
0.71rem11.36px
0.76rem12.16px
0.81rem12.96px
0.86rem13.76px
0.91rem14.56px
0.96rem15.36px
1.01rem16.16px
1.06rem16.96px
1.11rem17.76px
1.16rem18.56px
1.21rem19.36px
1.26rem20.16px
1.31rem20.96px
1.36rem21.76px
1.41rem22.56px
1.46rem23.36px
1.51rem24.16px
1.56rem24.96px
1.61rem25.76px
1.66rem26.56px
1.71rem27.36px
1.76rem28.16px
1.81rem28.96px
1.86rem29.76px
1.91rem30.56px
1.96rem31.36px
2.01rem32.16px
2.06rem32.96px
2.11rem33.76px
2.16rem34.56px
2.21rem35.36px
2.26rem36.16px
2.31rem36.96px
2.36rem37.76px
2.41rem38.56px
2.46rem39.36px
2.51rem40.16px
2.56rem40.96px
2.61rem41.76px
2.66rem42.56px
2.71rem43.36px
2.76rem44.16px
2.81rem44.96px
2.86rem45.76px
2.91rem46.56px
2.96rem47.36px
3.01rem48.16px
3.06rem48.96px
3.11rem49.76px
3.16rem50.56px
3.21rem51.36px
3.26rem52.16px
3.31rem52.96px
3.36rem53.76px
3.41rem54.56px
3.46rem55.36px
3.51rem56.16px
3.56rem56.96px
3.61rem57.76px
3.66rem58.56px
3.71rem59.36px
3.76rem60.16px
3.81rem60.96px
3.86rem61.76px
3.91rem62.56px
3.96rem63.36px
4.01rem64.16px
4.06rem64.96px
4.11rem65.76px
4.16rem66.56px
4.21rem67.36px
4.26rem68.16px
4.31rem68.96px
4.36rem69.76px
4.41rem70.56px
4.46rem71.36px
4.51rem72.16px
4.56rem72.96px
4.61rem73.76px
4.66rem74.56px
4.71rem75.36px
4.76rem76.16px
4.81rem76.96px
4.86rem77.76px
4.91rem78.56px
4.96rem79.36px
5.01rem80.16px
5.06rem80.96px
5.11rem81.76px
5.16rem82.56px
5.21rem83.36px
5.26rem84.16px
5.31rem84.96px
5.36rem85.76px
5.41rem86.56px
5.46rem87.36px
5.51rem88.16px
5.56rem88.96px
5.61rem89.76px
5.66rem90.56px
5.71rem91.36px
5.76rem92.16px
5.81rem92.96px
5.86rem93.76px
5.91rem94.56px
5.96rem95.36px
6.01rem96.16px
6.06rem96.96px
6.11rem97.76px
6.16rem98.56px
6.21rem99.36px
6.26rem100.16px
6.31rem100.96px
6.36rem101.76px
6.41rem102.56px
6.46rem103.36px
6.51rem104.16px
6.56rem104.96px
6.61rem105.76px
6.66rem106.56px
6.71rem107.36px
6.76rem108.16px
6.81rem108.96px
6.86rem109.76px
6.91rem110.56px
6.96rem111.36px
7.01rem112.16px
7.06rem112.96px
7.11rem113.76px
7.16rem114.56px
7.21rem115.36px
7.26rem116.16px
7.31rem116.96px
7.36rem117.76px
7.41rem118.56px
7.46rem119.36px
7.51rem120.16px
7.56rem120.96px
7.61rem121.76px
7.66rem122.56px
7.71rem123.36px
7.76rem124.16px
7.81rem124.96px
7.86rem125.76px
7.91rem126.56px
7.96rem127.36px
8.01rem128.16px
8.06rem128.96px
8.11rem129.76px
8.16rem130.56px
8.21rem131.36px
8.26rem132.16px
8.31rem132.96px
8.36rem133.76px
8.41rem134.56px
8.46rem135.36px
8.51rem136.16px
8.56rem136.96px
8.61rem137.76px
8.66rem138.56px
8.71rem139.36px
8.76rem140.16px
8.81rem140.96px
8.86rem141.76px
8.91rem142.56px
8.96rem143.36px
9.01rem144.16px
9.06rem144.96px
9.11rem145.76px
9.16rem146.56px
9.21rem147.36px
9.26rem148.16px
9.31rem148.96px
9.36rem149.76px
9.41rem150.56px
9.46rem151.36px
9.51rem152.16px
9.56rem152.96px
9.61rem153.76px
9.66rem154.56px
9.71rem155.36px
9.76rem156.16px
9.81rem156.96px
9.86rem157.76px
9.91rem158.56px
9.96rem159.36px

Common Use Cases

Use REM units for: font sizes, margins, paddings, and any spacing that should scale with the root font-size. Use PX for: borders, shadows, and other design elements that need precise pixel-perfect control.

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Complete Conversion Tables

Click any value below to automatically fill the converter and see the conversion.

PX to REM Conversion
PixelsREM
1px0.0625rem
2px0.125rem
3px0.1875rem
4px0.25rem
5px0.3125rem
6px0.375rem
7px0.4375rem
8px0.5rem
9px0.5625rem
10px0.625rem
11px0.6875rem
12px0.75rem
13px0.8125rem
14px0.875rem
15px0.9375rem
16px1rem
17px1.0625rem
18px1.125rem
19px1.1875rem
20px1.25rem
REM to PX Conversion
REMPixels
0.00rem0.00px
0.05rem0.80px
0.10rem1.60px
0.15rem2.40px
0.20rem3.20px
0.25rem4.00px
0.30rem4.80px
0.35rem5.60px
0.40rem6.40px
0.45rem7.20px
0.50rem8.00px
0.55rem8.80px
0.60rem9.60px
0.65rem10.40px
0.70rem11.20px
0.75rem12.00px
0.80rem12.80px
0.85rem13.60px
0.90rem14.40px
0.95rem15.20px

Full Conversion Tables

PX to REM (21-40)
21px1.3125rem
22px1.375rem
23px1.4375rem
24px1.5rem
25px1.5625rem
26px1.625rem
27px1.6875rem
28px1.75rem
29px1.8125rem
30px1.875rem
31px1.9375rem
32px2rem
33px2.0625rem
34px2.125rem
35px2.1875rem
36px2.25rem
37px2.3125rem
38px2.375rem
39px2.4375rem
40px2.5rem
PX to REM (41-60)
41px2.5625rem
42px2.625rem
43px2.6875rem
44px2.75rem
45px2.8125rem
46px2.875rem
47px2.9375rem
48px3rem
49px3.0625rem
50px3.125rem
51px3.1875rem
52px3.25rem
53px3.3125rem
54px3.375rem
55px3.4375rem
56px3.5rem
57px3.5625rem
58px3.625rem
59px3.6875rem
60px3.75rem
PX to REM (61-80)
61px3.8125rem
62px3.875rem
63px3.9375rem
64px4rem
65px4.0625rem
66px4.125rem
67px4.1875rem
68px4.25rem
69px4.3125rem
70px4.375rem
71px4.4375rem
72px4.5rem
73px4.5625rem
74px4.625rem
75px4.6875rem
76px4.75rem
77px4.8125rem
78px4.875rem
79px4.9375rem
80px5rem
PX to REM (81-100)
81px5.0625rem
82px5.125rem
83px5.1875rem
84px5.25rem
85px5.3125rem
86px5.375rem
87px5.4375rem
88px5.5rem
89px5.5625rem
90px5.625rem
91px5.6875rem
92px5.75rem
93px5.8125rem
94px5.875rem
95px5.9375rem
96px6rem
97px6.0625rem
98px6.125rem
99px6.1875rem
100px6.25rem

Need Different Values?

Use our converter tool above to calculate any custom PX to REM conversion instantly.

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