Which fractions are on this chart?

Every reduced fraction with a denominator from 2 through 12, plus the 16ths — the set school arithmetic and recipes actually use — sorted by size.

Why do some rows show ≈ instead of =?

Because those decimals never end. 1/3 is 0.(3), repeating forever, so any printed digits are rounded, and the chart marks them with ≈ rather than pretending they are complete.

Fraction → decimal chart

The everyday fractions in size order, each with its decimal. Exact values print with =; repeating decimals are rounded and marked ≈.

Fraction	Decimal	Percent
1/16	0.0625	6.25%
1/12	≈ 0.083333	≈ 8.333333%
1/11	≈ 0.090909	≈ 9.090909%
1/10	0.1	10%
1/9	≈ 0.111111	≈ 11.111111%
1/8	0.125	12.5%
1/7	≈ 0.142857	≈ 14.285714%
1/6	≈ 0.166667	≈ 16.666667%
2/11	≈ 0.181818	≈ 18.181818%
3/16	0.1875	18.75%
1/5	0.2	20%
2/9	≈ 0.222222	≈ 22.222222%
1/4	0.25	25%
3/11	≈ 0.272727	≈ 27.272727%
2/7	≈ 0.285714	≈ 28.571429%
3/10	0.3	30%
5/16	0.3125	31.25%
1/3	≈ 0.333333	≈ 33.333333%

Fraction	Decimal	Percent
4/11	≈ 0.363636	≈ 36.363636%
3/8	0.375	37.5%
2/5	0.4	40%
5/12	≈ 0.416667	≈ 41.666667%
3/7	≈ 0.428571	≈ 42.857143%
7/16	0.4375	43.75%
4/9	≈ 0.444444	≈ 44.444444%
5/11	≈ 0.454545	≈ 45.454545%
1/2	0.5	50%
6/11	≈ 0.545455	≈ 54.545455%
5/9	≈ 0.555556	≈ 55.555556%
9/16	0.5625	56.25%
4/7	≈ 0.571429	≈ 57.142857%
7/12	≈ 0.583333	≈ 58.333333%
3/5	0.6	60%
5/8	0.625	62.5%
7/11	≈ 0.636364	≈ 63.636364%
2/3	≈ 0.666667	≈ 66.666667%

Fraction	Decimal	Percent
11/16	0.6875	68.75%
7/10	0.7	70%
5/7	≈ 0.714286	≈ 71.428571%
8/11	≈ 0.727273	≈ 72.727273%
3/4	0.75	75%
7/9	≈ 0.777778	≈ 77.777778%
4/5	0.8	80%
13/16	0.8125	81.25%
9/11	≈ 0.818182	≈ 81.818182%
5/6	≈ 0.833333	≈ 83.333333%
6/7	≈ 0.857143	≈ 85.714286%
7/8	0.875	87.5%
8/9	≈ 0.888889	≈ 88.888889%
9/10	0.9	90%
10/11	≈ 0.909091	≈ 90.909091%
11/12	≈ 0.916667	≈ 91.666667%
15/16	0.9375	93.75%

Common questions

Which fractions are on this chart?: Every reduced fraction with a denominator from 2 through 12, plus the 16ths — the set school arithmetic and recipes actually use — sorted by size.
Why do some rows show ≈ instead of =?: Because those decimals never end. 1/3 is 0.(3), repeating forever, so any printed digits are rounded, and the chart marks them with ≈ rather than pretending they are complete.

Where this comes from. Exact rational arithmetic on the values shown — fractions are pairs of integers until display, and inch–metric conversion uses 25.4 mm to the inch, exact by definition since 1959. See the full methodology.