Finance 55 tools → Seller Tools 17 tools → Date 19 tools → Health 28 tools → Everyday 25 tools → Math 22 tools → Construction 20 tools → PDF 25 tools → Education 11 tools → Conversion 7 tools → Text 14 tools → Image 22 tools → About → Contact →
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Every calculator you need,
in one place.

Mortgages, BMI, GPA, percentages, loans, dates and more — 265 free tools that give you the right answer instantly, right in your browser.

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12 tool categories265 calculators & utilities, organized and easy to find
Free foreverEvery tool is free to use — no trials, no paywalls
No sign-up neededOpen a tool and calculate — no account, no email
Phone & computerDesigned to work beautifully on any screen size
Categories

Browse by category

Pick a category and find the right tool in seconds. Every calculator uses the real formula — no guesswork.

Finance 55 tools

Money, loans and interest — mortgages, EMI, compound growth and retirement math done right.

Explore Finance

Date 19 tools

Dates, days and time spans — count days between dates, add days, and plan deadlines.

Explore Date

Health 28 tools

BMI, calories and body metrics — understand your numbers with clear, honest ranges.

Explore Health

Everyday 25 tools

Age, tips, discounts and daily helpers — the small calculations you reach for every week.

Explore Everyday

Math 22 tools

Everyday and scientific math — percentages, fractions, averages and a full scientific calculator.

Explore Math

Construction 20 tools

Concrete, area and materials — estimate pavers, paint, tile and lumber before you buy.

Explore Construction

PDF 25 tools

Merge, split and convert PDFs — combine files, pull out pages and turn documents into PDFs.

Explore PDF

Education 11 tools

GPA, grades and study — track your semester, convert grades and plan your target average.

Explore Education

Conversion 7 tools

Units and temperatures — convert length, weight, currency and °F ↔ °C in one tap.

Explore Conversion

Text 14 tools

Word counting and text utilities — count words and characters, clean up and convert case.

Explore Text

Image 22 tools

Resize and compress images — shrink photos for email, forms and websites, right in your browser.

Explore Image

Seller Tools 17 tools

Marketplace profit calculators for Amazon and TikTok Shop sellers — full fee stacks, honest defaults.

Explore Seller Tools

All 265 tools A–Z

Not sure where a tool lives? Browse the full list — every calculator and utility on CalcViso, A to Z.

Browse all tools
Live demo

Try one — this calculator really works

A small preview of how every CalcViso tool feels: clear labels, the real formula, and an instant answer. Change any number and watch it update.

Finance • Demo

Mortgage Calculator

Monthly payment from home price, down payment, rate and term. Open the full tool →

$
$
%
yrs

Formula: standard amortization — the same math lenders use. Principal & interest only in this demo.

Your monthly payment
$0
Loan amount$0
Total interest$0
Total of all payments$0
Why CalcViso

Built to be bookmarked

The calculator site you save once and keep coming back to.

Fast

Instant results in your browser. No loading spinners, no page reloads — type and the answer is already there.

Accurate

Real formulas, tested with real numbers. The mortgage tool uses true amortization — not a rough guess.

Private

Your numbers never leave your device. Calculations happen on your phone or computer — nothing is sent or stored.

Free

No accounts, no paywalls, no “premium” lock on the answer. Every tool, fully working, for everyone.

FAQ

Common questions

Quick answers before you calculate.

Is CalcViso really free?
Yes — every calculator and tool on CalcViso is free to use, with no limits on how many times you use it. There is no paid version hiding the real answer.
Do I need an account?
No. There is nothing to sign up for and no email to enter. Open any tool, type your numbers, and get your answer right away.
Does it work on my phone?
Yes. CalcViso is built for phones first — every tool works on any phone, tablet or computer, and because the math runs in your browser, it stays fast even on a slow connection.