Precipitation Equivalents:

Inches Per Hour (in/h) to Millimeters Per Hour (mm/h)

Conversion factor:
1in (inch) = 25.4 mm (millimeters) exactly.
Base Table
in	0.0	0.1	0.2	0.3	0.4	0.5	0.6	0.7	0.8	0.9
	mm
0.0		2.5	5.1	7.6	10.2	12.7	15.2	17.8	20.3	22.9
1.0	25.4	27.9	30.5	33.0	35.6	38.1	40.6	43.2	45.7	48.3
2.0	50.8	53.3	55.9	58.4	61.0	63.5	66.0	68.6	71.1	73.7
3.0	76.2	78.7	81.3	83.8	86.4	88.9	91.4	94.0	96.5	99.1
4.0	101.6	104.1	106.7	109.2	111.8	114.3	116.8	119.4	121.9	124.5
5.0	127.0	129.5	132.1	134.6	137.2	139.7	142.2	144.8	147.3	149.9
6.0	152.4	154.9	157.5	160.0	162.6	165.1	167.6	170.2	172.7	175.3
7.0	177.8	180.3	182.9	185.4	188.0	190.5	193.0	195.6	198.1	200.7
8.0	203.2	205.7	208.3	210.8	213.4	215.9	218.4	221.0	223.5	226.1
9.0	228.6	231.1	233.7	236.2	238.8	241.3	243.8	246.4	248.9	251.5
10.0	254.0	256.5	259.1	261.6	264.2	266.7	269.2	271.8	274.3	276.9
Supplemental Table
in	0.00	0.01	0.02	0.03	0.04	0.05	0.06	0.07	0.08	0.09
	mm
0.00		0.3	0.5	0.8	1.0	1.3	1.5	1.8	2.0	2.3
0.10	2.5	2.8	3.0	3.3	3.6	3.8	4.1	4.3	4.6	4.8
0.20	5.1	5.3	5.6	5.8	6.1	6.4	6.6	6.9	7.1	7.4
0.30	7.6	7.9	8.1	8.4	8.6	8.9	9.1	9.4	9.7	9.9
0.40	10.2	10.4	10.7	10.9	11.2	11.4	11.7	11.9	12.2	12.4
0.50	12.7	13.0	13.2	13.5	13.7	14.0	14.2	14.5	14.7	15.0
0.60	15.2	15.5	15.7	16.0	16.3	16.5	16.8	17.0	17.3	17.5
0.70	17.8	18.0	18.3	18.5	18.8	19.1	19.3	19.6	19.8	20.1
0.80	20.3	20.6	20.8	21.1	21.3	21.6	21.8	22.1	22.4	22.6
0.90	22.9	23.1	23.4	23.6	23.9	24.1	24.4	24.6	24.9	25.1