Expression engine
Real precedence, parentheses, implicit multiplication (2π, 3(4+5)), exponents, factorials and percent that behaves like your phone calculator.
calculator.another-horizon.eu
All the math, one place.
Standard arithmetic, a full scientific engine, programmer base conversion and 11 unit families — inside a single glass panel. Keyboard friendly, works offline, no ads and no tracking.
- 4 modes
- 25+ functions
- BIN · OCT · DEC · HEX
- 90+ units
- Full keyboard
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Everything, included.
No modes hidden behind a paywall, no ads between you and the answer — just a calculator that does the whole job, in the browser, on any device.
Scientific mode
Sine, cosine, tangent and their inverses with a 2nd key, logs, roots, powers, x², x³, x!, 1/x, π, e and a DEG/RAD switch.
Programmer mode
BIN, OCT, DEC and HEX conversion live on the side, with AND, OR, XOR, NOT, shifts, MOD and 8/16/32/64-bit words.
Unit converter
Length, mass, temperature, speed, area, volume, time, data, pressure, energy and angle — 11 families, 90+ units, exact factors.
Memory & history
MC, MR, M+, M− and MS for the memory register, plus a history that survives reloads — click any entry to reuse its result.
Keyboard ready
Type digits, operators, parentheses and function keys straight from the keyboard. Enter to evaluate, Backspace to delete, Esc to clear, Ctrl+C to copy.
Keyboard
Type it faster.
The whole calculator works without leaving the keyboard — handy for long expressions and quick sums.
Digits & decimal01…9.
Operators+−*/
Power, percent, factorial^%!
Grouping()
EvaluateEnter=
Delete last tokenBackspace
Clear everythingEscDel
Copy resultCtrlC
Programmer digits (HEX)ABCDEF
Bitwise & shifts&|^~<<>>