SI prefix converter
Convert centi to deci
1 c = 0.1 d — to convert centi to deci, divide by 10.
Centi to deci calculator
1 c = 0.1 d
Centi to deci at a glance
1 c = 0.1 d
÷ 10
1 place left
10⁻² → 10⁻¹
Centi to deci formula and conversion factor
Every SI prefix is a whole power of ten. Centi is 10⁻² of the base unit and deci is 10⁻¹, so the two are exactly 1 power of ten apart. That makes the factor exactly 10 — not an approximation, and it never changes with the unit you are measuring.
d = c ÷ 10
10⁻² ÷ 10⁻¹ = 10⁻¹ = 0.1
1 c = 0.1 d
5 c = 0.5 d
100 c = 10 d
1000 c = 100 dCenti to deci conversion table
The values people look up most often, converted exactly. Read down for centi (c), across for deci (d).
In words: 10 c is 1 d, 100 c is 10 d, 500 c is 50 d, 1000 c is 100 d, 2000 c is 200 d, and 5000 c is 500 d.
| Centi (c) | Deci (d) |
|---|---|
| 0.0009 c | 0.00009 d |
| 0.001 c | 0.0001 d |
| 0.005 c | 0.0005 d |
| 0.008 c | 0.0008 d |
| 0.01 c | 0.001 d |
| 0.02 c | 0.002 d |
| 0.05 c | 0.005 d |
| 0.1 c | 0.01 d |
| 0.2 c | 0.02 d |
| 0.4 c | 0.04 d |
| 0.5 c | 0.05 d |
| 1 c | 0.1 d |
| 2 c | 0.2 d |
| 5 c | 0.5 d |
| 7 c | 0.7 d |
| 10 c | 1 d |
| 20 c | 2 d |
| 50 c | 5 d |
| 100 c | 10 d |
| 200 c | 20 d |
| 250 c | 25 d |
| 300 c | 30 d |
| 400 c | 40 d |
| 500 c | 50 d |
| 800 c | 80 d |
| 1,000 c | 100 d |
| 2,000 c | 200 d |
| 5,000 c | 500 d |
How to convert centi to deci without a calculator
Move the decimal point 1 place to the left, padding with zeros if you run out of digits. Going to a larger prefix always makes the number smaller, because each unit now covers more of the quantity.
The check that catches almost every mistake: compare the two exponents before you write the answer. Centi is 10⁻², deci is 10⁻¹. If the prefix you are moving to is smaller, the digits must grow. If your answer moved the wrong way, you divided when you should have multiplied — the failure mode behind more than one real unit-conversion incident.
Centi to deci FAQ
- How do you convert centi to deci?
- To convert centi to deci, divide by 10. That is the same as moving the decimal point 1 place to the left. For example, 1 c = 0.1 d, and 5 c = 0.5 d.
- How many centi are in 1 deci?
- There are exactly 10 centi in 1 deci. Deci (d) is 10⁻¹ of the base unit and centi (c) is 10⁻², so they sit 1 power of ten apart — a factor of exactly 10, with no rounding.
- Is 1 centi equal to 1 deci?
- No. Centi and deci are different SI prefixes 1 power of ten apart. Centi is 10 times smaller than deci, so 1 c = 0.1 d.
- Is the centi to deci conversion exact?
- Yes. Every SI prefix is a whole power of ten, so centi to deci is exactly ÷ 10 with no rounding. This calculator shifts the decimal exponent instead of multiplying in binary floating point, so a value like 1.001 c returns an exact result rather than one with a trailing rounding error.
- Is centi bigger or smaller than deci?
- Centi is smaller. Centi is 10⁻² and deci is 10⁻¹, which makes centi 10 times smaller. The number always moves the other way: a quantity written in the smaller unit uses the bigger number.