Talking to a calculator takes ten seconds to learn and one habit to get right: say the operation out loud instead of implying it. Here is the rest — permissions, phrasing, and what to do when it mishears.
There are two ways in. In a browser — any device, nothing installed — you use the calculator on this site. On iPhone or iPad you can also install the VoiceCalc app, which adds AI interpretation of questions phrased as sentences. The browser route comes first, because it works everywhere and needs no setup.
Use the one further down this page, or the calculator on the home page. No account, no download, no extension. The page must be served over HTTPS — browsers refuse microphone access on plain HTTP.
The round white button on the card. That first tap is what triggers the permission prompt: speech recognition cannot start without a real user gesture, so a page can never quietly listen to you.
Choose Allow when the browser asks. If you dismissed the prompt earlier, open the padlock or address-bar icon and re-enable the microphone for this site, then reload.
Speak at a normal pace: “thirty-five times twelve”, “twenty percent of eighty”. Stop when you are done — the recogniser ends the turn on a pause, so there is no button to hold down.
Your words appear as text, and under them the expression the parser built — for example 1250 ÷ 4 + 18. If that line matches what you meant, the answer below it is right.
Turn on the read-aloud switch in the top corner of the card and every result is spoken in the page's language. The choice is remembered in your browser for next time.
The field under the answer takes the same phrasing as the microphone. Edit the number that came out wrong and press Enter rather than repeating the whole sum.
Tap the mic and say something like “35 times 12”
The browser calculator works in Safari on iOS. The app adds the part a parser cannot do: reading a question phrased as a sentence.
iPhone and iPad, iOS 16.0 or later. Free download; AI solving is a one-time purchase, not a subscription.
There is no VoiceCalc app for Android or desktop — the AI word-problem solving is iOS-only. Android, Windows, Mac, Linux and ChromeOS users get the browser calculator instead, which handles spoken arithmetic perfectly well and costs nothing.
The parser accepts symbols and words interchangeably. These are the forms it actually looks for.
“times”, “multiplied by”, “divided by”, or × * ÷ /. Every language has its own: per / diviso in Italian, por / dividido entre in Spanish, mal / geteilt durch in German, fois / sur in French, 乘以 / 除以 in Chinese, गुणा / भाग in Hindi.
Say 20% of 80, or “twenty percent of eighty”. The word for percent is matched per language — por ciento, per cento, pour cent, prozent, प्रतिशत, 百分之. A percentage always needs the number it is a percentage *of*.
“three point one four” and 3.14 both work. Decimal-comma languages match the spoken word too — virgola, coma, komma, virgule — and read 3,14 as three point one four.
“squared”, “to the power of”, “square root of” — and al quadrato, elevado a, hoch, wurzel aus, radice quadrata di, 平方根. 2 to the power of 10 gives 1,024.
With the symbol or without: $, €, £, ¥, ₹, ₽, ₩ are dropped before the sum is evaluated, so 12.99 times 3 and “$12.99 times 3” give the same answer.
“what's…”, “how much is…”, “calculate…”, “work out…” are stripped, so you can ask a question rather than dictate an expression. The equivalents exist per language: 是多少 in Chinese, कितना in Hindi, 얼마 in Korean.
VoiceCalc129.99 minus 20% of 129.99 rather than “20% off 129.99”. The voice math solver page lists the phrasings that work.The website, and with it the parser and the microphone, is published in 19 languages: English, 中文, Español, Français, Português, Русский, العربية, বাংলা, हिन्दी, Indonesia, 日本語, 한국어, Deutsch, Italiano, 繁體中文, Nederlands, Filipino, Polski and Українська — each with its own operator words and its own way of reading spoken numbers.
Switching is a footer link — every language is a real URL, and the microphone is told which language to expect, so it stops trying to hear English. The iOS app's App Store listing is localised in 30 languages.
The talking calculator — the one that reads answers back — is written natively in Italian, Spanish, Portuguese and Hindi as well as English.
Tap the microphone once and choose Allow. If you missed the prompt, open the padlock or address-bar icon, re-enable the microphone for this site and reload. Browsers only allow it on HTTPS, and only after a real tap.
Yes. The calculator on this site runs in the browser, on any device, with no download and no account. The iOS app is optional and adds AI word-problem solving.
Give the percentage and the number it applies to: “twenty percent of eighty”, or 20% of 80. “20% off 129.99” implies a subtraction rather than stating one — say “129.99 minus 20% of 129.99” instead.
Digit-by-digit dictation is the hardest thing for a recogniser. Say numbers as words — “twelve thousand five hundred”, not “one two five zero zero” — and fix anything that slipped through in the field under the answer.
The browser calculator works on Android in Chrome, voice input included, and reads answers aloud. The VoiceCalc app is iPhone and iPad only, so AI word-problem solving is not available on Android.
Typed arithmetic is evaluated in your browser, so it works once the page has loaded. Speaking uses the browser's speech-recognition service, and the app's AI solving needs a connection.