Online Calculator Basic ↔ Scientific

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Tap numbers and + − × ÷. Tap = to evaluate. AMP Mode
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Type numbers and operators (+ − × ÷). Press Enter for =.
/* keep widget perfectly inside on mobile */ .toi-calc{max-width:min(720px, 92vw);} .toi-grid{gap:10px} @media (max-width:420px){ .toi-grid{gap:8px} .toi-btn{padding:12px 10px;font-size:16px} } /* make sure svg/icon use current text color */ .toi-btn svg{fill:currentColor;stroke:currentColor}