01Console Calculator@calcubotFreeA "programmable" calculator bot that understands full Python-style expressions plus the math, random, datetime, json and re modules — for anyone who wants more than basic arithmetic in a Telegram chat.Converters & calculatorsFreeWorks in groupsChecked Oct 2271 / 100Score18.2KusersOpen
02Calculator bot@mathcalcbotFreeAn inline calculator — type @mathcalcbot and an expression like sin(60)*sqrt(16)/.3 in any chat, and a ready-to-send result pops up without ever opening the bot itself.Converters & calculatorsFreeInline modeNo sign-upChecked Oct 2268 / 100ScoreOpen
03Math bot@qalcbotFreeA lightweight inline calculator that also remembers variables — set x = 5 once, then reuse x in later expressions across any chat.Converters & calculatorsFreeInline modeNo sign-upChecked Oct 2263 / 100ScoreOpen
04Wolfram Alpha Bot@wolframbotFreeA Telegram front-end for Wolfram Alpha's computational engine — ask it a calculation, a unit conversion or a factual question with /wolfram and get a real computed answer, not a search-result link.Converters & calculatorsFreeEnglishChecked Oct 2273 / 100ScoreOpen
05UnitConversionBot@UnitConversionBotFreeA no-frills unit converter — type something like "100 ft to m" and get an instant answer covering length, area, volume, weight, temperature, energy and speed. Free and open source.Converters & calculatorsFreeNo sign-upEnglishChecked Oct 2271 / 100ScoreOpen
06Converter Bot@converter_robotFreeA unit converter with a clean category menu — pick length, weight, temperature or another category, then convert with a couple of taps or the /units command. Interface in English and Russian.Converters & calculatorsFreeNo sign-upEnglishChecked Oct 2270 / 100ScoreOpen
07Timezone Bot@the_timezone_botFreeConvert a time between any two time zones with one command — "/convert 3PM GMT to PST" — and set live countdowns to future events, right inside Telegram.Converters & calculatorsFreeNo sign-upChecked Oct 2266 / 100ScoreOpen
