Omni Calculator is an all-in-one calculator app for real-life math, finance, health, science, construction, unit conversion, and everyday decisions. It is the official mobile app for the Omni Calculator website, making...
Omni Calculator is an all-in-one calculator app for real-life math, finance, health, science, construction, unit conversion, and everyday decisions.
It is the official mobile app for the Omni Calculator website, making thousands of its calculators easier to access on the go.
Instead of opening a basic calculator and trying to remember the right formula, search for the calculator you need, enter your values, and get a clear result in seconds.
Omni brings thousands of specialized calculators and converters into one app. Use it for quick everyday checks, school problems, budgeting, shopping, home projects, fitness estimates, science formulas, and more.
What can you calculate with Omni?
Math calculators
Calculate percentages, percentage increase, percentage difference, averages, fractions, ratios, area, volume, circumference, probability, statistics, variance, median, quartiles, slope, logarithms, and more.
Finance calculators
Use calculators for margin, markup, discount, salary to hourly pay, annual income, overtime, pay raise, loan payments, mortgage, interest, compound interest, APY, CAGR, ROI, tip, tax, savings, and investment estimates.
Health and fitness calculators
Check everyday health and fitness numbers such as BMI, calorie deficit, maintenance calories, body fat, ideal weight, waist to hip ratio, waist to height ratio, BMR, walking calories, steps to calories, VO2 max, pregnancy dates, and more.
Unit converters
Convert length, weight, mass, volume, area, temperature, speed, time, pressure, energy, data, pixels, inches, milliliters, grams, kilograms, pounds, ounces, Newton meters, foot-pounds, and many other units.
Construction and home calculators
Plan practical projects with calculators for gravel, tile, concrete, paint, stairs, roof pitch, board feet, bricks, flooring, sand, pipe volume, acreage, area, material estimates, and DIY measurements.
Science and engineering calculators
Work with physics, chemistry, biology, ecology, astronomy, engineering, and technical formulas. Find tools for wet bulb temperature, wattage, power to weight ratio, wavelength, Reynolds number, dilution, molarity, pH, scientific notation, and more.
Everyday life tools
Handle date and time calculations, age calculator, birth year calculator, month counter, week calculator, countdowns, fuel consumption, download time, cooking conversions, unit price, shopping discounts, sports calculators, and practical daily questions.
Why use Omni Calculator?
- 3700+ calculators and converters in one app
- Search for the exact tool you need
- Dedicated calculators for specific problems
- Useful for students, teachers, professionals, homeowners, shoppers, travelers, fitness users, and everyday problem solvers
Omni Calculator is built for questions like:
How do I calculate a percentage?
What is my BMI?
How much should I tip?
How much paint or tile do I need?
How do I convert units?
What is my salary per hour?
How much will a discount save me?
How many calories did I burn walking?
What is the margin or markup?
How long will a download take?
From quick daily checks to school, work, and home projects, Omni helps you find the right tool faster.
Calculations related to health, finance, construction, and similar topics are estimates for general information and should not replace professional advice when accuracy matters.
Make everyday calculations easier to search, solve, and understand.
Previous Versions
Here you can find the changelog of Omni Calculator: 3700+ Tools since it was posted on our website on 2026-10-10 15:31:41.
The latest version is and it was updated on 2026-10-10 15:31:41. See below the changes in each version.
Omni Calculator: 3700+ Tools version
Updated At: 2026-08-13
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