What is 1 in binary?
1₁₀ converted to binary is 1₂. The complete working for this exact number is below — or type a different number into the decimal to binary converter and watch it happen live.
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How to convert 1 to binary, step by step
Keep dividing 1 by 2 and writing down each remainder. The remainders, read in reverse, are the answer.
| Number | ÷ 2 | Quotient | Remainder |
|---|---|---|---|
| 1 | 2 | 0 | 1 |
Reading the remainder column from the bottom up gives 1, so 1₁₀ = 1₂. Check it back: 1 = 1 — the 1 bits add up to 1.
In short: 1 ÷ 2 = 0 r 1 → read bottom-up: 1₂
Frequently asked questions
How do you write 1 in binary?
Divide 1 by 2 over and over, noting each remainder: 1 ÷ 2 = 0 r1. Reading the remainders from last to first gives 1, so 1₁₀ = 1₂.
What is special about 1 in binary?
1 is exactly 2^0 — a power of two — so its binary form is just the single digit 1 — no zeros at all: 1. Every place value in binary is one of these powers.
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