Online calculator
Basic arithmetic or full scientific functions — sqrt, log, sin/cos/tan, exponents, factorials, constants. Keyboard support. History panel. No signup.
About the Qaynaq Labs calculator
A good online calculator should do three things well: load instantly, respect keyboard input, and not be cluttered with ads in the answer space. This one does all three. Basic mode handles everything most users actually need; scientific mode adds trig, logs, exponents, factorials, and the constants π and e — with a degree/radian toggle.
Keyboard support is full: digits, operators, parentheses, Enter to compute, Backspace to delete, Escape to clear. The history panel keeps the last 10 calculations; click any to re-load it for editing. Math runs through a hand-written shunting-yard parser — not JavaScript's runtime code-execution function — so paste-injection is impossible.
Frequently asked
Does it support hex / binary?
Not yet — decimal only in v1. Programmer mode is on the roadmap.
Why doesn't sin(90) equal 1?
Check the DEG/RAD toggle. sin(90°) = 1; sin(90 rad) ≈ 0.894. Default is degrees.
Is it private?
Yes — everything runs in your browser. No calculations are sent anywhere. Try it in airplane mode after the page loads.
Why a custom parser?
Using JavaScript's runtime code-execution function on user input would be a security risk. The hand-written shunting-yard parser only knows about numbers, operators, and our function whitelist — safe by construction.