Convert speed units — km/h, mph, m/s, knots, mach and more.
| Unit | Name | Value |
|---|---|---|
| 0.001 cm/s | 3.336e-14 c | |
| 0.01 cm/s | 3.336e-13 c | |
| 0.1 cm/s | 3.336e-12 c | |
| 1 cm/s | 3.336e-11 c | |
| 5 cm/s | 1.668e-10 c | |
| 10 cm/s | 3.336e-10 c | |
| 50 cm/s | 1.66782e-09 c | |
| 100 cm/s | 3.33564e-09 c | |
| 1000 cm/s | 3.33564e-08 c |
Common centimeter per second values converted to speed of light — factor: 1 cm/s = 3.3356e-11 c
| Centimeter per Second (cm/s) | Speed of Light (c) | Context |
|---|---|---|
| 0.001 cm/s | 3.336e-14 c | Blood capillary |
| 0.01 cm/s | 3.336e-13 c | Slow drip |
| 0.1 cm/s | 3.336e-12 c | Slow current |
| 1 cm/s | 3.336e-11 c | Ocean current |
| 3 cm/s | 1.001e-10 c | Fast current |
| 10 cm/s | 3.336e-10 c | Slow stream |
| 30 cm/s | 1.001e-09 c | Stream |
| 100 cm/s | 3.336e-09 c | Walking |
| 300 cm/s | 1.001e-08 c | Jogging |
| 500 cm/s | 1.668e-08 c | Cycling |
| 1,000 cm/s | 3.336e-08 c | City car |
| 3,000 cm/s | 1.001e-07 c | Highway car |
| 5,000 cm/s | 1.668e-07 c | Racing car |
| 3.43e+04 cm/s | 1.144e-06 c | Speed of sound |
| 1e+05 cm/s | 3.336e-06 c | Aircraft |
Converting centimeter per second to speed of light is essential for drivers, pilots, engineers, and scientists working across different measurement systems. Road speed limits, aviation airspeed, nautical navigation, and physics calculations each use different speed units, making quick and accurate conversion a practical everyday skill.
Key reference points: 5 cm/s = 1.6678e-10 c and 10 cm/s = 3.3356e-10 c. At higher speeds, 100 cm/s = 3.3356e-9 c. For reverse conversion, multiply c values by 2.9979e10 to get back to cm/s.
All conversions use the internationally recognized factor of exactly 1 cm/s = 3.3356e-11 c. Calculations are performed in IEEE 754 double-precision floating point, giving accuracy to at least 8 significant figures — more than sufficient for any practical application.
Formula: Speed of Light = Centimeter per Second × 3.3356e-11
Multiply any centimeter per second value by 3.3356e-11 to get speed of light. One centimeter per second equals 3.3356e-11 c.
Reverse: Centimeter per Second = Speed of Light × 2.9979e10
1 cm/s = 3.3356e-11 c. Memorize this for instant mental estimates.
Use 3.3356e-11 as a quick mental multiplier.
To verify: multiply your result by 2.9979e10 to recover the original cm/s value.
Designs lab-on-chip devices with flow velocities in cm/s.
Measures surface and subsurface ocean current speeds in cm/s.
Analyzes blood flow velocities in vessels using Doppler ultrasound in cm/s.
Monitors groundwater seepage rates and pollutant transport in cm/s.
Studies sediment transport and erosion with current speeds in cm/s.
Controls peristaltic pump and microfluidic channel flow rates in cm/s.
Centimeters per second is a CGS (centimeter-gram-second) unit of speed equal to 0.01 m/s. It was part of the CGS system formalized by the British Association for the Advancement of Science in 1874.
cm/s is used in microfluidics, laboratory experiments, slow fluid flows, and medical imaging (e.g., blood flow velocity in capillaries). It provides convenient numbers where m/s would give tiny decimals.
Interesting fact: Blood flow in capillaries is typically 0.03-0.05 cm/s, while ocean currents range from 5-25 cm/s. A garden snail moves at about 0.03 cm/s.
The speed of light in a vacuum, denoted c, is exactly 299,792,458 m/s — a defined constant since 1983 when the meter was redefined in terms of it. The symbol c comes from the Latin celeritas (swiftness).
Einstein's special relativity (1905) established c as the ultimate speed limit of the universe. No object with mass can reach c; only massless particles like photons travel at exactly the speed of light.
Interesting fact: Light from the Sun takes 8 minutes 20 seconds to reach Earth. Light from the nearest star (Proxima Centauri) takes 4.24 years. The Voyager 1 spacecraft, the farthest human-made object, travels at just 0.000057c.