The AI Calculator that answers in plain English
Ask any calculation the way you would ask a person. Get the number, the formula and the working — then jump straight into one of 170+ dedicated calculators with your values already filled in.
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Start with something useful
How the AI calculator works
Ask in words. Get the number, the formula, and the tool.
Describe the calculation
Type the question the way you would say it out loud — “split a $96 dinner between 4 people with 18% tip”. No syntax, no operators, no set-up.
Read the working, not just the result
Every answer names the type of calculation, writes out the formula, numbers each step, and adds a line of plain-language context so you can check it.
Continue in the real calculator
When your question matches one of our dedicated tools, the AI hands you straight over to it with your figures already filled in — ready to adjust, chart and share.
Browse by need
A tool for every kind of question
Designed for trust
Useful detail, without the clutter.
Every tool is built to show its assumptions, keep values readable, and help you understand what to do with the answer.
Transparent formulas
See the math behind the result.
Private by default
Your inputs stay in your browser.
Made for mobile
Comfortable controls on any screen.
Always improving
New tools and refinements every week.
Your workspace
Recent calculations
Your workspace is ready
Calculations you make will appear here, only on this device.
Good to know
What is an AI calculator?+
An AI calculator understands a question written in ordinary language — like “what's the monthly payment on a $400,000 mortgage at 6.2% over 30 years” — and returns the answer along with the formula and each step of the working, instead of making you translate the problem into buttons first.
Is the Mathify AI calculator free?+
Yes. The AI calculator on this page is free and needs no account or sign-up. Ask as many questions as you like.
Can it show the steps, not just the answer?+
Every answer includes the type of calculation, the formula used, the numbered working, and a short plain-language explanation, so you can check the result rather than trust it.
What happens when a dedicated calculator already exists?+
When your question matches one of Mathify's 150+ calculators, the AI links straight to it and carries your numbers across, so you land on the full tool with the values already filled in and can adjust them.
What kinds of questions can it handle?+
Percentages, loans and mortgages, compound interest, unit and currency conversions, dates and ages, BMI and calories, tips and bill splitting, discounts, and general everyday arithmetic.
Are my calculations private?+
Standard calculators run entirely in your browser and nothing is sent anywhere. AI questions are sent to the model to be answered, and are not tied to an account.