Add Binary Numbers
Quickly calculate the sum of a bunch of binary values. Runs entirely in your browser, so your data never leaves your device.
0 chars · 0 lines
Output
The result appears here as you type.
How to use Add Binary Numbers
- 1. Enter the binary numbers. Paste the base 2 values you want to sum into the input pane, one per line or separated by spaces. You can add two numbers or a long column of them in a single pass.
- 2. Let the tool do binary arithmetic. Every value is parsed as an unsigned base 2 integer and summed with full carry propagation. The example 1010 plus 1100 (10 plus 12 in decimal) produces 10110, which is 22.
- 3. Copy the binary sum. The answer stays in binary, so you can copy it straight from the output pane into an assignment, a datasheet calculation or a unit test expectation.
When to use Add Binary Numbers
Add Binary Numbers saves you from converting to decimal, adding, and converting back. It is a base 2 adding machine for any list of values, useful when working through digital logic exercises, checking hand-computed carries, or totaling sizes that a datasheet only gives you in binary.
- Checking longhand binary addition. You worked a carry chain out on paper for a computer architecture course and want to confirm the result. Paste the same operands here and compare against your written answer.
- Summing offsets from a memory map. A microcontroller reference lists register offsets in raw binary. Add the base address and offset directly in base 2 rather than converting each figure to hex or decimal first.
- Building test fixtures for an ALU. When writing testbenches for a Verilog or VHDL adder, you need known-good input and output pairs. Generate correct sums here and paste them into your assertion table.
- Totaling more than two values. Adding a column of eight binary readings by hand invites mistakes. Drop the whole list in at once and get a single correct total with all carries handled.
Examples
Sum
Input
1010 1100
Output
10110
About the Add Binary Numbers tool
Add Binary Numbers runs as plain JavaScript in your browser tab, with no server behind it. Quickly calculate the sum of a bunch of binary values. Whatever you put in stays on your device from start to finish.
The tool is part of EditSafely's Binary Tools section, 112 single-purpose utilities built around the same idea: open the page, get the result, keep your data to yourself.
There is nothing to configure. Provide the input and the result appears on its own. A worked example further down the page shows exactly what the tool produces for a real input.
That local-first design has practical benefits beyond privacy. The tool keeps working on a flaky connection once the page has loaded, results are instant because nothing round-trips to a server, and it is safe to use with confidential material.
Frequently asked questions
Is Add Binary Numbers free to use?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Is it safe to paste sensitive or confidential data?
Everything happens locally. Your browser downloads the tool's code once, then does all the processing itself; nothing you enter is transmitted, stored or logged. You can even go offline after the page loads and it will still work.
How much text can I process at once?
There is no fixed limit. Because the work happens on your own device rather than on a shared server, the practical ceiling is your machine's memory, which comfortably handles inputs far larger than typical online tools allow.
Do I need to sign up or install anything?
No. The tool works in any modern browser on desktop, tablet or phone. There is no account to create, no extension to add and no software to install.
How do I use the result?
The output panel has a one-click copy button, and you can keep refining the input while you work; the result updates in place as you type.