What it does
web2.0calc is a browser scientific calculator with mathematical notation, history, equation solving and large-number support.
Type into the expression bar and press Enter, or build the formula with scientific buttons. web2.0calc displays mathematical notation and history, with degree/radian controls, complex numbers, calculus and unit-conversion syntax such as 200m in cm. The precision selector offers Auto and digit settings through 60; that is a setting rather than a blanket accuracy guarantee for every problem. Free membership gives access to the community forum. Plus keeps the same features while removing advertisements/ad tracking across the sites, requires login to purchase and expires automatically without renewal. Enterprise arrangements use a custom quote.
Strengths
- Keyboard input and scientific keypad
- Expression display and calculation history
Best for
- Scientific arithmetic with visible notation
Sources
- Web 2.0 scientific calculator (Oct 26, 2026)
- Membership Pricing - web2.0calc (Oct 26, 2026)