Best calculator apps for Android
A calculator app that goes past the built-in one handles long expressions, unit conversions, graphs, past results and exact or symbolic answers.
17 apps ranked · How we rank
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Number 1: Scientific calculator plus 991
SAMATICA EDUCATION TECHNOLOGY COMPANY LIMITED
4.8 out of 5 (562K) 50M+ installs
A free, wide-ranging calculator suite that suits students and engineering learners who want five calculator modes in one app.
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ClevCalc bundles 18 everyday calculators into one free Android app, a strong fit for students, travelers and routine money or unit math.
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A free, ad-free graphing calculator that covers plotting, tables and statistics well enough to replace a handheld for most coursework.
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A free, ad-supported calculator that covers arithmetic, conversions and common money sums in one Android app.
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A free, wide-ranging calculator with dated history and Wear OS support that suits students and anyone doing regular number work.
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A convincing calculator disguise with real encryption and useful extras, best for hiding private photos on a shared phone.
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A free, feature-rich graphing calculator for Android that suits students who need graphing, equation solving, statistics and calculus on their phone.
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A focused, trade-specific calculator for framers, roofers and contractors who work in feet-inch-fractions and need layout math on a phone.
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A broad, ad-free answer engine that rewards anyone who arrives with a computable question and $2.99 to spend.
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A free, ad-supported launcher that puts eight everyday calculators one swipe from your home screen, at the cost of rearranging that screen.
More of the best calculator apps
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Construction Master 5 Calc
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12
Pipe Trades Pro Calculator
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13
10bii Financial Calculator
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14
Qualifier Plus IIIx
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15
Financial Calculators Pro
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4.7
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16
Real Estate Master IIIx Calc
Calculated Industries
4.7
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17
BuildCalc
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About calculator apps
A scientific calculator focuses on quick entry and common functions for students and professionals who need more than basic arithmetic, while a graphing app adds plots and tables but takes longer to learn. Exact fractions and symbolic forms help when a decimal answer is not enough. Layout differs as much as depth, from a plain keypad to screens crowded with functions. Some work fully offline, while others depend on a network connection for extra features.
What to look for
- Check how the app handles number precision and exact forms, because a calculator that rounds too early can give a wrong final answer in multi-step problems.
- Look at the history and memory functions, since being able to review or reuse earlier results saves time and reduces repeated typing.
- See whether graphing and unit conversion are included or sold as separate extras, as this affects what you get for the space the app takes up.
- Consider the permissions the app requests, because a calculator has no need for access to contacts, location, or files.
- Decide if offline use matters for you, since an app that requires a connection may be unavailable exactly when you need it.
How we rank
Apps are ranked by their Google Play rating (weighted by how many people rated them), their number of installs, how recently they were updated and how closely they fit the category. Only apps we've reviewed are included.