| 0in² | 0ro |
| 1in² | 6.3769 × 10⁻⁷ro |
| 2in² | 0.00000127538003ro |
| 3in² | 0.000001913070045ro |
| 4in² | 0.00000255076006ro |
| 5in² | 0.000003188450075ro |
| 6in² | 0.000003826140091ro |
| 7in² | 0.000004463830106ro |
| 8in² | 0.000005101520121ro |
| 9in² | 0.000005739210136ro |
| 10in² | 0.000006376900151ro |
| 11in² | 0.000007014590166ro |
| 12in² | 0.000007652280181ro |
| 13in² | 0.000008289970196ro |
| 14in² | 0.000008927660211ro |
| 15in² | 0.000009565350226ro |
| 16in² | 0.00001020304024ro |
| 17in² | 0.00001084073026ro |
| 18in² | 0.00001147842027ro |
| 19in² | 0.00001211611029ro |
| 20in² | 0.0000127538003ro |
| 21in² | 0.00001339149032ro |
| 22in² | 0.00001402918033ro |
| 23in² | 0.00001466687035ro |
| 24in² | 0.00001530456036ro |
| 25in² | 0.00001594225038ro |
| 26in² | 0.00001657994039ro |
| 27in² | 0.00001721763041ro |
| 28in² | 0.00001785532042ro |
| 29in² | 0.00001849301044ro |
| 30in² | 0.00001913070045ro |
| 31in² | 0.00001976839047ro |
| 32in² | 0.00002040608048ro |
| 33in² | 0.0000210437705ro |
| 34in² | 0.00002168146051ro |
| 35in² | 0.00002231915053ro |
| 36in² | 0.00002295684054ro |
| 37in² | 0.00002359453056ro |
| 38in² | 0.00002423222057ro |
| 39in² | 0.00002486991059ro |
| 40in² | 0.0000255076006ro |
| 41in² | 0.00002614529062ro |
| 42in² | 0.00002678298063ro |
| 43in² | 0.00002742067065ro |
| 44in² | 0.00002805836066ro |
| 45in² | 0.00002869605068ro |
| 46in² | 0.00002933374069ro |
| 47in² | 0.00002997143071ro |
| 48in² | 0.00003060912072ro |
| 49in² | 0.00003124681074ro |
| 50in² | 0.00003188450075ro |
| 51in² | 0.00003252219077ro |
| 52in² | 0.00003315988078ro |
| 53in² | 0.0000337975708ro |
| 54in² | 0.00003443526081ro |
| 55in² | 0.00003507295083ro |
| 56in² | 0.00003571064084ro |
| 57in² | 0.00003634833086ro |
| 58in² | 0.00003698602088ro |
| 59in² | 0.00003762371089ro |
| 60in² | 0.00003826140091ro |
| 61in² | 0.00003889909092ro |
| 62in² | 0.00003953678094ro |
| 63in² | 0.00004017447095ro |
| 64in² | 0.00004081216097ro |
| 65in² | 0.00004144985098ro |
| 66in² | 0.000042087541ro |
| 67in² | 0.00004272523101ro |
| 68in² | 0.00004336292103ro |
| 69in² | 0.00004400061104ro |
| 70in² | 0.00004463830106ro |
| 71in² | 0.00004527599107ro |
| 72in² | 0.00004591368109ro |
| 73in² | 0.0000465513711ro |
| 74in² | 0.00004718906112ro |
| 75in² | 0.00004782675113ro |
| 76in² | 0.00004846444115ro |
| 77in² | 0.00004910213116ro |
| 78in² | 0.00004973982118ro |
| 79in² | 0.00005037751119ro |
| 80in² | 0.00005101520121ro |
| 81in² | 0.00005165289122ro |
| 82in² | 0.00005229058124ro |
| 83in² | 0.00005292827125ro |
| 84in² | 0.00005356596127ro |
| 85in² | 0.00005420365128ro |
| 86in² | 0.0000548413413ro |
| 87in² | 0.00005547903131ro |
| 88in² | 0.00005611672133ro |
| 89in² | 0.00005675441134ro |
| 90in² | 0.00005739210136ro |
| 91in² | 0.00005802979137ro |
| 92in² | 0.00005866748139ro |
| 93in² | 0.0000593051714ro |
| 94in² | 0.00005994286142ro |
| 95in² | 0.00006058055143ro |
| 96in² | 0.00006121824145ro |
| 97in² | 0.00006185593146ro |
| 98in² | 0.00006249362148ro |
| 99in² | 0.00006313131149ro |
The square inch is a unit of area and is an imperial unit with the symbol in².
One square inch is equal in area to a square with edges one inch in length.
The square inch is a common unit of measurement in the UK and US.
The rood is a unit of area used in historic England with the symbol ro.
Its unit size is equal to 1/4 of an acre, 10,890 ft² or 1,012m². A rectangle equal to one furlong in length and one rod in width is one rood in area.
Its use was very important in surveying land because of the ease of conversion into acres from smaller sections of land.