All Calculations
In One Place
VAT, salary, zodiac, BMI, JSON formatter and more. Fast, secure and completely free.
What is Hesaplabs?
Hesaplabs is a comprehensive platform that brings together over 100 free calculation tools you might need in your daily and professional life.
It offers a wide range of services from VAT calculation to salary calculation, from BMI to zodiac calculation. Professional coding tools such as JSON formatter, Base64 encoder/decoder are also available for developers.
Popular Calculators
Our most used calculation tools
VAT Calculator
Calculates VAT and total based on VAT-inclusive or exclusive amounts.
Acid-Base Neutralization Calculator
Calculates the neutralization status, remaining concentration, and pH when acid and base solutions are mixed.
Grass Seed Calculator
Calculate required grass seed amount in lbs, kg, oz and grams based on area and application type. Suitable for new lawns, overseeding, high-traffic areas and shade-tolerant use cases.
Earth Curvature Calculator
Calculate curvature drop, horizon distance, hidden height and additional spherical geometry values for a given distance.
Feels Like Temperature Calculator
Calculate feels-like temperature from actual temperature, humidity and wind speed. Uses heat index in hot conditions and wind chill in cold conditions.
Price per GB Calculator
Calculate the cost per GB, TB and MB from total price and storage capacity. Useful for comparing SSDs, HDDs, USB drives, cloud storage and hosting plans.
Professional Tools
JSON formatter, Base64 encoder/decoder, URL encoder, JWT decoder and more. All tools run in your browser.
{
"name": "Hesaplabs",
"tools": 100,
"free": true
}Categories
Choose category according to your needs
Why Hesaplabs?
Instant Results
Get accurate results in seconds
Safe & Private
Your data never goes anywhere
On Any Device
Mobile, tablet and desktop compatible
FAQ
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Tests & Mini Games
Test your reflexes, memory, color vision — completely free
Color Blindness Test
8% of people have color blindness and most don't know it. Find out for free, right in your browser.
Reaction Time Test
Average human reaction time is 250ms. Where do you rank? Fatigue and caffeine both affect this number.
Visual Memory Test
Your grid memory is tested across 15 levels. Research shows visual memory is directly tied to everyday learning.
Stroop Color Word Test
Your brain's automatic word reading clashes with color perception. How well can you suppress the interference?
Aim Trainer
Your mouse precision and hand-eye coordination matter even in daily work. Discover your rank.
Line Follow Test
Stay on the thin line without straying. Simultaneously tests hand-eye coordination and patience.
Articles & Guides
Detailed guides on finance, health, and education
Why Is Color Blindness Testing Important? Symptoms, Types, and Impact on Daily Life
Around 300 million people worldwide have color blindness. Many don't realize it for years. Learn about the types, symptoms, and how to test yourself for free in your browser.
Read MoreWhat is VAT? How Is It Calculated?
Value Added Tax (VAT) is one of the most common tax types in Turkey. This guide covers VAT rates, calculation methods, and key information.
Read MoreWhat is the Difference Between Net and Gross Salary? 2025 Guide
Net and gross salary concepts are often confused. How are SSI, income tax, and stamp duty deductions calculated? Detailed guide.
Read More