Chart Conversions
3 Meters, 10 Feet
Letter Size |
3/Meter |
10/Foot |
Decimal |
6/Meter |
20/Foot |
LogMAR |
30M |
3/30 |
10/100 |
.10 |
6/60 |
20/200 |
1.0 |
24M |
3/24 |
10/80 |
.12 |
6/48 |
20/160 |
0.9 |
19M |
3/19 |
10/83 |
.16 |
6/38 |
20/125 |
0.8 |
15M |
3/15 |
10/50 |
.20 |
6/30 |
20/100 |
0.7 |
12M |
3/12 |
10/40 |
.25 |
6/24 |
20/80 |
0.6 |
9.5M |
3/9.5 |
10/32 |
.32 |
6/19 |
20/63 |
0.5 |
7.5M |
3/7.5 |
10/25 |
.40 |
6/15 |
20/50 |
0.4 |
6M |
3/6 |
10/25 |
.50 |
6/12 |
20/40 |
0.3 |
4.8M |
3/4.8 |
10/16 |
.63 |
6/9.5 |
20/32 |
0.2 |
3.8M |
3/3.8 |
10/12.5 |
.80 |
6/7.5 |
20/25 |
0.1 |
3M |
3/3 |
10/10 |
1.00 |
6/6 |
20/20 |
0.0 |
2.4M |
3/2.4 |
10/8 |
1.25 |
6/4.8 |
20/16 |
-0.1 |
1.9M |
3/1.9 |
10/6.3 |
1.60 |
6/3.8 |
20/12.5 |
-0.2 |
1.5M |
3/1.5 |
10/5 |
2.00 |
6/3 |
20/10 |
-0.3 |
40 Centimeters, 16 inches
Letter Size |
Decimal |
6/Meter |
20/Foot |
Diopters of add for 1 meter |
8.0M |
0.05 |
6/120 |
20/400 |
20D |
6.3M |
0.063 |
6/95 |
20/20/320 |
15D |
5.0M |
0.08 |
6/75 |
20/250 |
12D |
4.0M |
0.10 |
6/60 |
20/200 |
10D |
3.2M |
0.12 |
6/48 |
20/160 |
8D |
2.5M |
0.16 |
6/38 |
20/125 |
6D |
2.0M |
0.20 |
6/30 |
20/100 |
5D |
1.6M |
0.25 |
6/24 |
20/80 |
4D |
1.25M |
0.32 |
6/19 |
20/63 |
3D |
1.0M |
0.40 |
6/15 |
20/50 |
2.5D |
.80M |
0.50 |
6/12 |
20/40 |
|
.63M |
0.63 |
6/9.5 |
20/32 |
|
.50M |
0.80 |
6/7.5 |
20/25 |
|
.40M |
1.00 |
6/6 |
20/20 |
|
.32M |
1.25 |
6/4.8 |
20/16 |
|
.25M |
1.60 |
6/3.8 |
20/12.5 |
|
.20M |
2.00 |
6/3 |
20/10 |