Instant · Precise · Universal
32 units available
6 categories total
To convert inches to cm: multiply by 2.54. To convert cm to inches: divide by 2.54.
1 in = 25.4 mm = 2.54 cm = 1/12 ft = 1/36 yd.
For example, 1 Inch (in) = 3.647643e-11 Sun's Radius (R☉).
| Inch (in) | Sun's Radius (R☉) |
|---|---|
| 0.1 | 3.647643e-12 |
| 0.5 | 1.823822e-11 |
| 1 | 3.647643e-11 |
| 2 | 7.295287e-11 |
| 5 | 1.823822e-10 |
| 10 | 3.647643e-10 |
| 25 | 9.119108e-10 |
| 50 | 1.823822e-9 |
| 100 | 3.647643e-9 |
| 500 | 1.823822e-8 |
| 1000 | 3.647643e-8 |
The inch is a unit of length in the imperial and US customary systems, defined as exactly 25.4 millimeters.
1 in = 25.4 mm = 2.54 cm = 1/12 ft = 1/36 yd.
To convert inches to cm: multiply by 2.54. To convert cm to inches: divide by 2.54.
Screen sizes (TVs, monitors), drill bit sizes, pipe diameters, screw dimensions, and rainfall measurement in the US.
King Edward II of England defined the inch as 'three grains of barley, dry and round, placed end to end' in 1324.
Forgetting that fractions of an inch use powers of 2 (1/2, 1/4, 1/8, 1/16), not decimal subdivisions like metric.
Your thumb from tip to first knuckle is roughly 1 inch — a handy (literal) reference.
The solar radius is the radius of the Sun, approximately 6.9634 × 10⁸ meters (about 696,340 km).
1 R☉ = 6.9634 × 10⁸ m = 696,340 km ≈ 109 × Earth's radius ≈ 0.00465 AU.
To convert solar radii to km: multiply by 696,340. To convert solar radii to AU: multiply by 0.00465.
Describing stellar sizes: Betelgeuse ≈ 700 R☉, Sirius ≈ 1.7 R☉, a white dwarf ≈ 0.01 R☉.
You could line up about 109 Earths across the Sun's diameter. The largest known star (UY Scuti) is about 1,700 R☉.
Confusing solar radius with solar diameter — the diameter is 2 R☉. Also, stellar catalogs list radius, not diameter.
The Sun's radius (109 × Earth) gives a sense of scale: you could fit over a million Earths inside the Sun by volume.



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