buncha/engineering/scicalc

Scientific Calculator

Expression
Type or tap a button to begin
Memory empty
Functions you can type
sin, cos, tantrig
asin, acos, atan, atan2inverse trig
sinh, cosh, tanhhyperbolic
ln, log, log2, log(b,x)logs
exp, sqrt, cbrt, pow, rootexp / roots
abs, sign, floor, ceil, round, truncrounding
min, max, mod, gcd, lcmmulti-arg
comb / ncr, perm / npr, n!combinatorics
rad(deg), deg(rad)angle conversion
pi, e, tau, phi, ans, memconstants

Pairs well with

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Circuit Load Calculator
Add appliances → get the right breaker and wire si
CNC Feeds & Speeds
RPM + IPM calculator for milling, drilling, and tu
Conduit Fill Calculator
Will the bundle fit? NEC Chapter 9 fill % for EMT,

About Scientific Calculator

Powerful expression-mode calculator. Trig, logs, factorials, combinatorics, hex / radix conversion, memory, history, and a real expression parser — type 2*sin(pi/4)+sqrt(16) and it just works.

Everything happens on your device. Close the tab and it's gone.
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Built browser-first. Run by one developer.
Every tool runs on your device. No tracking pixels, no sign-up to start. The numbers below are pulled live from the registry.
386
Free tools
Across 14 categories
7
Visual editors
PDF · image · video · audio
34
Curated kits
By profession + lifestyle
27
AI tools
Powered by Claude API
Files never uploadNo tracking pixelsNo sign-up neededWorks in any modern browser
The handful of AI tools (paraphrase, summarise, blog, captions, etc.) send your prompt text to Anthropic's Claude API to do the work. Files, images, PDFs and video never leave your device. Pick the tools that fit your privacy comfort.